GEOLOGIC SUMMARY REPORT OF THE 1981 EXPLORATION PROGRAM SUNNYSIDE TAR SANDS PROJECT CARBON COUNTY UTAH FOR AMOCO MINERALS COMPANY ENGLEWOOD, COLORADO

Transcription

1 GEOLOGIC SUMMARY REPORT OF THE 1981 EPLORATION PROGRAM SUNNYSIDE TAR SANDS PROJECT CARBON COUNTY UTAH FOR AMOCO MINERALS COMPANY ENGLEWOOD, COLORADO BY WM. S. CALKIN, D. SC. CONSULTING GEOLOGIST FEBRUARY 19, 1982

2 GEOLOGIC SUMMARY REPORT 1981 EPLORATION PROGRAM SUNNYSIDE TAR SANDS PROJECT CARBON COUNTY, UTAH Table f Cntents Page SUMMARY AND CONCLUSIONS RECOMMENDATIONS INTRODUCTION GEOGRAPHIC SETTING Lcatin Access Intrastructure LAND STATUS ENVIRONMENT CONSIDERATIONS HISTORY AND PREVIOUS WORK REGIONAL GEOLOGY San Rafael Swell Uinta Basin Piceance Creek Area Sutheast Uinta Basin Sunnyside Area Western Uinta Basin Oil and Gas Fields GEOLOGY OF THE PROJECT AREA Preview Green River Frmatin Parachute Creek Member Garden Gulch Member Duglas Creek Member Sunnyside Delta Cmplex Tar Sands REFERENCES i ii APPENDI Figures N. 1 thrugh N. 13 Tables N. 1 thrugh N. 10 Phts N. 1 thrugh N. 8 0

3 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Table 1 General Lcatin Map Detailed Lcatin Map List f Illustratins (Appendix) Structural Divisins f Utah Tar and Cal Resurces near Sunnyside Tar Sands Land Map Gelgic Sectin f San Rafael Swell Gelgic Sectin f Uinta Basin Uinta Basin - Gelgic Sectin and Oil and Gas Fields Gelgic Sectin f Price-Sldier Summit Diagrams f a Delta Cmplex Depsitinal Patterns f Inertia Dminated River Muth Effluents Depsitinal Patterns f Frictin Dminated River Muth Effluents Depsitinal Patterns f Buyant Dminated River Muth Effluents Average Values frm Drill Hles and Measured Sectins Table 2A Ttal Depth and Member Data f 1981 Table 2B Ttal Depth and Member Data f 1980 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Pht 1 Pht 2 Pht 3 Pht 4 Pht 5 Pht 6 Pht 7 Mineralizatin Data MSAT Thickness in Members Drill Hle Data f Thermal Tar Sand Tests by Shell Oil Cmpany Data frm Signal's Hrizntal Wells General Rck Prperties Assciated wth Principal Envirnments f Depsitin Analysis f Entrapped Gas Status f Drill Hles Pilt Mine Outcrp Area - Traverse Data Tar Seeps Prject and Main Delta Overview Asphalt Mine and Delta Cmplex Pilt Mine Outcrp Area Tar Sands f Channel Depsit Tar Sands f Channel Muth Bar Depsit Tar Sands f Beach Bar Depsit Pht 8 Tar Sands in Drill Cre frm Duglas Creek Member 00000

4 Land Map (scale 1" = 2,000 ft) Reginal Map (scale 1" - 2,000 ft) List f Maps Vlume I Gelgic Map Suthern Half (scale 1" = 500 ft) Gelgic Map Nrthern Half (scale 1" = 500 ft) Survey Cntrl Map Gelgic Baseline Sectin (scale 1" = 500 ft) Gelgic Sectin 3800 NE (scale 1" = 500 ft) Lngitudinal Sectin 12,000 NW (scale 1" = 500 ft Lngitudinal Sectin 17,600 NW (scale 1" = 500 ft) Lngitudinal Sectin A-A', near 26,000 NW (scale 1" = 500 ft) List f Clumnar Sectins Vlume II Measured Sectin N. 7 N. 8 N. 9 N. 10 N. 11 Dry Canyn Amc Drill Hle N. N. N. N. N. N. N. N. N. N. N. N. N. N. N. Shell Drill Hle N Pan American-Nutter Crp. CH-1

5 SUMMARY and CONCLUSIONS The Sunnyside Tar Sands are lcated in the suthwest prtin f the Uinta Basin and lcalized within a small delta cmplex that frmed in Lake Uinta during early Tertiary. The delta cmplex encmpasses dimensins apprximately 6 miles parallel t the ancient lake shreline, 1 t 2 miles perpendicular t the shreline and 1,200 feet thick. The Sunnyside delta cmplex can be separated int a main suthern area and an auxiliary nrthern area. The suthern area cntains the main delta lbe that is centered n the AmcKaiser Tract lcated in Sectin 2 and 3, T.14S., R.14E. Prtins f adjacent land cntain tar sands and include areas cntrlled by Gibbs Heirs; St. Mary's Parish and Crsby Crpratin; Sunnyside Municipal Watershed; and U.S.A. Oil and Gas Leases in the nrthern auxiliary area. The tar sands are lcalized within prus sandstnes assciated with channel depsits and sheet sands. These tw general categries can be divided int three specific types: channel depsits, channel muth bars and beach bar depsits. The general attitude f the sedimentary beds is N25 W with a dip f 5 NE. The majr channels f the delta cmplex are riented N40O t 70 E. Examinatin f Phts 1 thrugh 8 will help t cmprehend the gelgy and the gemetry f the Sunnyside delta cmplex. Numerus lateral and vertical lithlgic changes exist within the delta cmplex and cause abrupt variatins in the lithlgy as indicated in Phts 3 and 4. The Sunntside delta cmplex was depsited in a relatively lw energy frictin dminated system and is characterized by a detailed cmplexity f interfingering envirnments f depsitin that vary abruptly in bth hrizntal and vertical directins. The Sunnyside delta cmplex exists within the Green River Frmatin. Three members f the Green River Frmatin define the dminant envirnments f depsitin assciated with the Sunnyside delta cmplex. Frm ldest t yungest r bttm t tp these are the Duglas Creek Member, Garden Gulch Member and Parachute Creek Member. The Duglas Creek Member is the delta facies and cntains the principal river channels, river muth bars and marshes f the delta and delta plain envirnments. The average thickness f the upper prtin f the Duglas Creek Member in the main delta lbe is 650 feet. The Garden Gulch Member represents the shre facies and cntains the shreline and shreface envirnments. Gar-pike fish scales, stracds and algal limestnes are cmmn within the Garden Gulch Member. The average thickness f the Garden Gulch Member in the main delta lbe is 300 feet. The Parachute Creek Member is the lake facies and cntains the laminated t thin bedded depsits f the delta frnt and prdelta envirnments that frmed in frnt f the Sunnyside delta cmplex. The average thickness f the Parachute Creek Member in the main delta lbe is 200 feet. The lithlgy f the delta cmplex cnsists f fine grained sandstnes, siltstnes, shales and limestnes plus sme lcal cnglmerates within channel and channel muth bar depsits. The quartz rich sandstnes are cmmnly well-saturated, well-srted and fine grained t very fine grained with prsities f percent. The quartzse siltstnes cmmnly cntain streaky saturatin. Shales are nnsaturated except i 00.1*0

6 fr fractures smetimes cated with bitumen. The limestnes cntain irregular saturatin with highly saturated algal znes. The lcal thin cnglmerates cntain nnsaturated siltstne pebbles and a saturated sandstne matrix. The tar sand depsits exist within the three members f the Green River Frmatin. Within the main delta lbe abut 75 percent f the tar sands are lcated within the Duglas Creek Member, 20 percent f the tar sands are lcated within the Garden Gulch Member, and 5 percent f the tar sands are lcated within the Parachute Creek Member. On the average these tar sands are assciated with 11 separate saturated znes. These saturated znes range in thickness frm feet and cntain bitumen that ranges frm 5-13 wt% bitumen, r galstn r galcu yd. Over 23,631 feet f cred drilling has been cmpleted in the main delta lbe by Amc Prductin (6,034 feet in 1978) and Amc Minerals (6,733 feet in 1980 and 10,861 feet in 1981). The tar sands within the nrthern auxiliary area are assciated with 3-8 separate saturated znes all within the Garden Gulch Member. The tar sands in the nrthern area are cnsidered essentially untested by cre drilling. The mining aspects f the tar sands can be separated int a suthern area and a nrthern area. As seen n gelgic sectins (baseline, 17,600 NW and near 26,000 NW) the majrity f the tar sands lie within a thick mineralized zne between the tp and bttm f the principal tar sands. Within the suthern area the depth t the tp f the principal tar sands averages almst 500 feet; the thickness f the mineralized zne averages abut 600 feet; and the saturated r pay znes ttal abut 320 feet. Field estimates in the nrthern area suggest the depth t the tp f the principal tar sands averages abut 165 feet; the thickness f the mineralized zne averages abut 375 feet; and the saturated r pay znes ttal abut 150 feet. ii 001G1

7 RECOMMENDATIONS 1. A significant wedge f tar sands exists in the nrthern area f the Sunnyside delta cmplex and needs detailed evaluatin by drilling and crdinated field wrk. This wedge is 14,000 feet lng, 2,000 t 6,000 feet wide, and up t 900 feet thick. This wedge exists alng the main ridge f the Ran Cliffs and extends frm 22,000 NW t 36,000 NW f the baseline system shwn n the Reginal Map (scale 1" = 2,000 feet). This ridge system is lcated within Sectins 20, 21, 28, 29, 32 and 33 f T.13S., R.14E. The area f Sectins 20, 21, 28, NE4 29 and 33 are largely cntrlled by Amc's Oil and Gas Leases. The purpse f this drilling prgram is twfld: (1) t mre accurately determine the bitumen reserves within the nrthern prtin f the delta cmplex, (2) t enable a mre cmplete evaluatin f the ttal bitumen reserves within the entire Sunnyside Tar Sands prject area that are available t Amc fr develpment. 2. Extensive gelgical, gephysical and analytical drill hle data exists within the main delta lbe and suggests sme remarkable crrelatins. The grade data frm Cre Labs Inc. and the resistivity values f the fcused electric lgs shuld be crrelated. A cmparative study f the gephysical and lithlgic lgs shuld be made t determine the relatinship f gephysical lgs t tar sands and their specific envirnments f depsitin. A separate reprt that crrelates and summarizes this gelgical, gephysical and analytical data shuld be cmpleted befre the end f the 1982 prgram. The purpse f crrelating this cmbined data is threefld: (1) t crrelate grade values f tar sands with resistivity values, (2) t btain a better understanding f the gelgical and gephysical relatinships f tar sands within the Sunnyside delta cmplex and (3) t help determine the feasibility f rtary drilling and gephysical lgging t replace cre drilling and cre lgging. iii OOl-C-2

8 1 INTRODUCTION The 1981 Sunnyside explratin prgram cnsisted f: (1) diamnd drilling f sixteen drill hles and lgging f the cre, and (2) initial gelgi mapping in the nrthern area t better define the limits f the tar sands assciated with the Sunnyside delta cmplex. In rder t cmprehend the gemetry f the Sunnyside Tar Sands it is necessary t cmplete bth reginal and detailed gelgic studies. In cntinuatin f previus prgrams twenty-tw clumnar sectins were made and include five field measured gelgic sectins cmpleted in the immediate vicinity during 1981, fifteen drill hles cmpleted during 1981, and tw previusly cmpleted drill hles near the prperty. The latter was dne t expand the data base, t utilize all available infrmatin and t preserve previus gelgic wrk. During the cmpilatin f these twenty-tw clumnar sectins detailed stratigraphic analysis established minr and majr envirnments f depsitin that defined varius aspects f the Sunnyside delta cmplex. The scpe f this reprt represents a cmpilatin f the gelgical studies f the delta cmplex at the Sunnyside Tar Sands Prject. Lcatin GEOGRAPHIC SETTING As seen frm Figure 1, the Sunnyside Tar Sands prject is lcated in nrtheastern Utah abut 120 airline miles sutheast f Salt Lake City and 25 airline miles east f Price, Utah. Price is the nearest cmmercial center t the prject and lcated abut 35 rad miles frm the prject area. As seen frm Figure 2, the Sunnyside Tar Sands prject lies abut 5 miles nrtheast f Sunnyside and is centered n sectin 2 and 3 (Amc's Tract), T.14S. R.14E., Salt Lake Meridian, Carbn Cunty, Utah. The first set f sparsely vegetated cliffs near Sunnyside are knwn as the Bk Cliffs, while the secnd set f mderately vegetated cliffs near Bruin Pint are knwn as the Ran Cliffs. Amc's Tract is lcated in the Ran Cliffs at the headwaters f Range Creek and at elevatins between 9,000-10,000 feet. The Ran Plateau exists t the nrtheast f the prject area. Access General access t Price is via Salt Lake City, Utah r Grand Junctin, Clrad. Access frm Price r Green River is via U.S. Rute 6 t State Rute 123 t East Carbn City and Sunnyside. As seen frm Figure 2, final access frm Sunnyside is ver 5 miles f dirt rad via Whitmre Canyn and Water Canyn t the Asphalt Mine. Frm the Asphalt Mine t Bruin Pint a fur-wheel-drive vehicle is usually essential. The yearly rainfall is sme inches at Sunnyside and appraches inches at Bruin Pint. Access during the spring is hampered by heavy snwfalls and during late summer by ccasinal rains. During the summer and early fall the rad cnditins n the prperty are generally gd, but mbility n tp is directly related t rainfall as the limey shales f the Parachute Creek Member that cmmnly exist n the tp f the Ran Cliffs usually turn t slick mud after tw days f wet weather. In 1981 the prject was hampered by cnsiderable rain during the first week f September, heavy rains during the first week f Octber, and by cnsiderable rain and extensive snw during the secnd week f Octber. The 1981 drilling prgram was terminated n Octber 15 with tw feet f snw n the grund. OO OJI f

9 2 Infrastructure The Sunnyside Tar Sands prject is well-lcated t varius facilities. Price is the lcal cmmercial center fr the numerus cal depsits and pwer plants in the Castle Valley with Salt Lake City abut 140 miles by rad. Carbn Cunty has a ppulatin f abut 25,000. Price is the cunty seat and has a ppulatin f abut 10,000. Price has cmmercial railrad facilities with nearby Helper as a majr dept n the line f the Denver and Ri Grande Railrad frm Denver t Salt Lake City. A majr spur f this railrad ges t Sunnyside t service 'the Sunnyside cal mines f Kaiser Steel Crpratin. The Sunnyside cal mines prduce 750,000 t 1,400,000 tnsyr f cking cal. Mst f this labr frce lives in East Carbn City which is lcated abut 1 mile west f Sunnyside. Figure 4 shws the numerus cal mines in the Castle Valley. In the western and nrthern part f the Castle Valley pwer plants exist at Castlegate, Hiawatha, Huntingtn and Castle Dale. A methane recvery prcess is in prgress at the Sunnyside cal mines. Lcal water supplies n Amc's Tract prduce the drill water necessary fr the drilling rigs. LAND STATUS The land status f the area encmpassing and surrunding the Sunnyside Tar Sands is shwn n Figure 5. This map represents a cmbinatin f the 1980 land map btained thrugh the curtesy f Claude Neely, Staff Negtiatr, Amc Prductin, Denver and the land map f the Sunnyside Quadrangle (K-15 NE) supplied by James Hiatt, Senir Land Representative, Amc Minerals, Englewd. The heart f the Sunnyside Tar Sands depsit is within Amc's Tract lcated in Sectins 2 and 3 f T.14S., R.14E. as shwn n Figure 5. This tract is smetimes referred t as the Kaiser Tract. The land within all f Sectin 2 and 75 percent f Sectin 3 (SW% excluded) f.14s., R.14E. encmpasses apprximately 1,120 acres and was wned in fee by Kaiser Steel Crpratin. Standard Oil Cmpany (Indiana) cmpleted purchase f this land frm Kaiser Steel Crpratin in Standard Oil Cmpany (Indiana) nw whlly wns the surface, water and mineral rights (except fr cal) n this tract. Imprtant additinal tar sands exist t the west, nrth and suth f the Amc Kaiser Tract. Adjacent prtins f tar sands exist t the west within parts f Sectin 4 near the Asphalt Mine. This land is wned in fee, h by Crsby Crpratin and h by St. Mary's Parish Land Cmpany. Crsby Crpratin is a small Salt Lake City grup, while St. Mary's Parish Land Cmpany is a Luisiana based firm with substantial il and gas interests reprtedly cntrlled by Cngden and Carey f Denver, Clrad. The eastern 75 percent f Sectin 4 and the small unlabelled tract t the nrth in Sectin 33 have been leased by Crsby-St. Mary's t Great Natinal Crpratin, a Texas firm principally invlved with cal mining in Oklahma. Adjacent prtins f tar sands exist t the nrth within parts f T.13S., R.14E., including Sectins 20, 21, 28, 29, 32, 33 and 34. Amc is the principal lessee f U.S.A. Oil and Gas prperty within Sectins 20, 21, 28, NE4 29, N 34 33, and N

10 Adjacent prtins f tar sands exist t the suth within parts f Sectins 3, 10 and 11. The SW 14 f Sectin 3 and the area f interest in Sectin 10 are cntrlled by nine individual heirs f tw parties knwn as Gibbs Heirs. Amc cntrls a 16 surface and mineral perpetual interest within the Gibbs Heir Tract. Great Natinal Crpratin reprtedly cntrls a substantial prtin f the remaining 56 interest. The sutheastern mst prtin f the Sunnyside Tar Sands lies beneath the Sunnyside Municipal Watershed in Sectins 11, 12, 13 and W 12 f 10. This watershed was established by U.S. Public Law and is under the jurisdictin f the BLM ffice in Price. Fr clarity in the field the land status map f Figure 5 was enlarged t 1 inch equals 2,000 feet and is f the same scale as the Reginal Map. The rad frm the Asphalt Mine t Bruin Pint is an unmaintained cunty designated rad.

11 ENVIRONMENTAL CONSIDERATIONS The Sunnyside Tar Sands prject is lcated at elevatins between 9,000 and 10,000 feet and at the headwaters f bth Range Creek and Dry Creek. Range Creek is the hme f lcal trut fisheries. Bth Range Creek and Dry Creek flw t the Green River that is lcated nineteen miles due east f Bruin Pint. This prtin f the Green River exists within the prpseddesignated Deslatin Canyn Wilderness Area. A large area n the east side f the Green River cntains the Uintah and Ouray Indian Reservatin. The prject area is lcated immediately nrth f a large prtin f the Sunnyside Municipal Watershed, and a small prtin f this watershed is centrally lcated within the prject area as seen n the Land Status Map (scale 1" = 2,000 feet). The Sunnyside Municipal Watershed was established by the U.S. Cngress in 1920 r 1921 fr the City f Sunnyside. The U.S. Steel and Kaiser Steel Cmpanies with branch ffices lcated in Sunnyside are currently endeavring t transfer their wnership rights n the Grassy Trail Reservir lcated in Whitmre Canyn ver t the City f Sunnyside.

12 5 HISTORY AND PREVIOUS WORK 1892 First small quarry peratin mined 1,000 tns fr street paving in Salt Lake City. Quarry lcated near 18,000 NW, 6,000 SW f baseline system n Gelgic Map, Scale 1" = 500 feet Anther 1,000 tns f rck remved frm small quarry Utah Asphalt Cmpany pens asphalt mine and shipped 2,000 tns between June-Octber. Asphalt mine lcated near 17,500 NW, 2,500 SW f baseline system n Gelqic Map, Scale 1" = 500 feet r 1917 Utah Asphalt Cmpany clses peratins having shipped 3,000 tns frm quarry Utah Rck Asphalt Crpratin builds aerial tramway perated by gravity and repens asphalt mine in Utah Rck Asphalt Crpratin quarried 25,000-30,000 tns frm the asphalt mine seen in Phts N. 2 and 3. The rck was transprted t Whitmre Canyn by the three mile lng aerial tramway system Rck Asphalt Cmpany f Utah maintains yearly seasnal quarry wrk and remves 300,000 tns f rck used fr paving within Utah and Clrad. The yearly utput in 1945 was 20,000-30,000 tns Rck Asphalt Cmpany f Utah ceases mining peratins U.S. Gelgical Survey, Oil and Gas Map 86 states reserves ttal 1,600,000,000 cubic yards measured r indicated and 700,000,000 inferred Gulf cmpletes ne cred drill hle t depth f 2,685 feet abut 4 miles nrtheast f the asphalt mine r 1964 Arc cntracted Himes Drilling Cmpany f Grand Junctin, Clrad and cmpleted five cred drill hles ne t three miles nrth t nrtheast f the asphalt mine. The available data frm these hles is very limited Phillips Petrleum Cmpany cmpleted three drill hles. One hle is tw miles nrtheast f the asphalt mine and the ther tw hles are fur t five miles nrth f the asphalt mine. N drill data is available n these three hles Pan American cmpleted reginal wrk including fur field measured sectins and cmpleted tw cred drill hles tw t fur miles east and sutheast f the asphalt mine (see Reginal Map, Scale 1" = 2,000 feet). 00V06

13 Shell Oil Cmpany cmpleted six reginal drill hles with tw cred hles in Kaiser Steel's Tract. In-situ steam injectin experiments were perfrmed within Kaiser Steel's Tract. Three f the reginal drill hles exist five t six miles sutheast f the asphalt mine and ne reginal drill hle exists three miles nrth f the asphalt mine (see Reginal Map, Scale 1" = 2,000 feet fr specific lcatin). Cpies f drill lgs and cre analyses frm these six hles are in the files f Amc Minerals. Suth f Bruin Pint and abut 800 feet east f the main cmmunicatins building a steam flding prject was attempted frm a large pen pad area. The map in Table N. 5 shws the lcatin f six steam injectin hles. One f these hles is Shell N. 2. The in-situ steam injectin experiments cnsisted f steam sak and steam drive tests (Thurber and Welburn, 1977). The tests were unsuccessful due t an extensive vertical fracture system and the inability t inject steam int the rck matrix. The vertical fracture system has a fracture frequency f ne fracturefur feet with a directin f EW t N70 W. The crss sectin in Table N. 5 illustrates the gemetry f the sak and drive intervals. As seen frm the clumnar sectin Shell drill hle N. 2, a majr channel depsit exists frm 725 t 945 feet and this channel depsit is als represented by the electric lgs shwn in Table 5. The steam sak tests were cnducted during the first summer nly. The tests cnsisted f eight day sak perids with eleven and eighteen day prductin cycles. The steam sak tests prduced nly trace amunts f viscus il. The steam drive tests were cnducted during tw summers and were designed t clse vertical fractures and induce hrizntal fractures. During the drive tests the drive interval in P-3 was the mst sensitive t temperature and prductin but nly prduced 0.5 bbld Texac cmpleted three cred drill hles three t fur miles nrth and nrtheast f the asphalt mine. Strip lgs are available Muntain Fuels cmpleted ne drill hle five miles nrth f the asphalt mine. N lithlgic data is available Signal Oil and Gas Cmpany f Ls Angeles, Califrnia drilled cred hle Sunnyside N. 1 (T.D. 1,450') and perfrmed in-situ steam injectin experiments. Signal Sunnyside N. 1 was cred frm 395-1,450 feet. Gephysical lgs n the hle cnsist f ne inductin electric lg and tw frmatin density lgs. Nte: Fr the 1981 reprt the limited available lithlgic and cre analysis data was used t make a clumnar sectin, and cpies f the gephysical lgs were nt available

14 7 The in-situ steam injectin experiments were perfrmed in the asphalt mine quarry. Three parallel hrizntal test wells riented N32 W with T.D.'s f feet exist in the nrthwest wall f the main pit. Fr general lcatin see Pht 5. Sme f the lithlgic and saturatin data frm these wells is shwn in Table 6. The purpse was t prduce il by applicatin f steam. A five day huff and puff test n the center well (#101) injected 142,800 lbs steam and prduced n il. Frm September 16 thrugh Nvember 1, 1966 the tw utside wells (#102, #103) were used fr steam injectin with the center well (#101) used as a prductin well. Steam was injected at 510 psi and 470 F. A ttal f 4.84 millin punds steam (4,671 MM BTU) was injected. Ttal prductin frm well #101 was 560 barrels f net crude and 10,000 barrels f water. The value BBL OIL divided by MM BTU injected is 0.12 (data frm Glassett et al., 1978) Amc Prductin cmpleted five cred drill hles in 1978 (N. 2, 3, 5, 6, 7) and started hles N. 1 and N. 4 within Sectins 2 and 3. Amc Prductin cmpleted 6,304 feet f cred drilling. This prgram was dcumented by a written reprt and maps by B.R. Wilsn and G. Ziemba, March 1977, and memrandum FR by T.L. Burgett with 5 maps by T.L. Burgett and D.A. Sawicki Great Natinal cmpleted three cres hles alng Bruin Pint rad and lcated within St. Mary's Parish-Crsby Crp. fee land. The lcatin f these drill hles is shwn n the Gelgic Map Suth Half (scale 1" = 500 feet) Standard Oil Cmpany (Indiana) cmpleted purchase frm Kaiser Steel fr NE 14, SE 14 and NW 14 f Sectin 3 and all f Sectin 2, T.14S., R.14E Amc Minerals cmpleted six cred drill hles (N. 1, 4,8-11) within Sectins 2 and 3. Amc Minerals cmpleted 6,733 feet f cre drilling. Gephysical lgs were made by Century Gephysical Crpratin n Amc Ns. 4, 5, 8-11 and indicate significant crrelatin with lithlgy and saturated sands Great Natinal cmpleted seven cred drill hles. Fur f these cred hles are near Sectins 2 and 3, and their lcatins are shwn n the Gelgic Maps (scale 1" feet). One cred hle was drilled abut three miles sutheast f the asphalt mine within the Sunnyside Municipal Watershed in the SW 14 f Sectin 11 T.14S., R.14E. The lcatin f this hle is shwn n the Gelgic Map. This hle was drilled withut btaining permissin frm the BLM. The last tw cred hles are lcated in Sectin 30, T.13S., R.14E. Apprximate unchecked field lcatins f these tw drill hles are SE 14, NE 14 and SE 14, NW 14 f Sectin 30. v s

15 Amc Minerals cmpleted seventeen cred drill hles fr a ttal f 10,861 feet. Eight vertical prject in-fill cre hles ttalled 7,993 feet. Eight vertical pilt mine hles ttalled 2,283 feet. Amc N. 16 was a 1,215 ft deep pilt mine hle, while the ther seven hles were shallw pilt mine hles. An angle hle was drilled 585 feet beneath Range Creek fr getechnical investigatins. Gephysical lgs were made by BPB Instruments and exhibit excellent crrelatin between lithlgy and tar sands. Glder Assciates f Denver initiates getechnical and hydrlgical studies and installs piezmeter strings in Amc Ns. 16, 21 and 26. ^9

16 REGIONAL GEOLOGY The Sunnyside Tar Sands depsit is lcated near the nrtheast flank f the San Rafael Swell and within the suthwestern edge f the Unita Basin as seen n Figure 3. Prtins f bth the San Rafael Swell and the Unita Basin can be seen frm the vantage pint near Bruin Pint. The San Rafael Swell influences an area almst 100 miles lng by 50 miles wide. The Uinta Basin exists within an area sme 150 miles in an east-west directin and up t 100 miles in a nrth-suth directin. The Uinta Basin is bunded n the nrth by the Uinta Muntain Uplift, n the east by the Duglas Creek Arch, n the suth by the Bk Cliffs and n the west by the Wasatch Muntain Uplift. The Uinta Basin is an asymetrical basin with the axial and deepest prtin near and subparallel t the Uinta Muntains. The Green River separates the Uinta Basin int a western and eastern prtin. The cmplete uninterrupted reginal strati graphic sectin is well-expsed in a 100-mile lng strip encmpassing the San Rafael Swell and the Uinta Basin. The lwer prtin f the reginal stratigraphic sectin frm Permian thrugh Cretaceus time exists within the regin influenced by the San Rafael Swell. The upper prtin f the reginal stratigraphic sectin f Tertiary time exists within the Uinta Basin. San Rafael Swel1 The San Rafael Swell is a nrth-nrtheast trending dmal uplift with extensive expsures f sedimentary rcks f Permian, Triassic, Jurassic and Cretaceus age. A stratigraphic sectin f the San Rafael Swell is shwn in Figure 6. The Permian rcks f the erded cre are predminantly sandstnes and limestnes f marine rigin. The extensive expsures f Triassic and Jurassic rcks are predminantly sandstnes and shales f cntinental rigin. Cretaceus rcks exist n the gently dipping flanks with widespread expsures f the 5,000-ft thick Mancs Shale f marine rigin. The Mancs Shale usually frms the base f the Bk Cliffs. The Mesaverde Grup is a regressive sequence with minr trangressive and regressive cycles. The Mesaverde Grup cnsists f sandstnes, siltstnes and shales f nnmarine, transitinal and marine rigin that frmed in fldplain, swamp, lagn, beach and ffbeach envirnments (McGkey, 1972). The Mesaverde Grup frms the upper prtin f the Bk Cliffs and frm ldest t yungest cnsists f the Star Pint Sandstne (300 feet thick); Blackhawk Frmatin (700-1,000 feet thick); Castlegate Sandstnes (0-200 feet thick) and Price River Frmatin (750 feet thick). Abve thicknesses are frm Hintze (1973). The Blackhawk Frmatin is the principal cal bearing unit f the Mesaverde Grup. The Castlegate Sandstne is a fluvial-delta cmplex that frms a regressive sandstne tngue that wedges ut seaward (east) near the Utah-Clrad state line (Van de Graaf, 1972). Uinta Basin The Uinta Basin cntains extensive expsures f sedimentary rcks f Tertiary age. A stratigraphic sectin f the Uinta Basin is shwn in Figure 7. In its simplest frm the Tertiary stratigraphic nmenclature cnsists f the Wasatch Frmatin at the base and the Green River Framtin at the tp. Hwever, 12 miles nrthwest f Sunnyside Tar Sands Prject in the upper Sldier Creek area

17 1 a limestne tngue f Pal ecene Lake Flagstaff intertngues with the Wasatch Frmatin and the stratigraphic terminlgy changes. The limestne tngue is knwn as the Flagstaff Member with the underlying rcks called the Nrth Hrn Frmatin and the verlying rcks knwn as the Cl tn Frmatin. The relatinship f this stratigraphic nmenclature is seen in Figures 7 and 8. During the Ecene Epch, Lake Uinta encmpassed much f nrtheastern Utah and nrthwestern Clrad. The area f Lake Uinta within Utah is largely cnfined t the Uinta Basin, while the area f Lake Uinta in Clrad is largely cnfined t the Piceance Creek Basin (McDnald, 1972). During early Tertiary time sme 18,000 feet f fluvial and lacustrine depsits accumulated in the Uinta Basin (Osmnd, 1965). The principal Tertiary depsits frm ldest t yungest are the Wasatch, Green River, Uinta, and Duchesne River Frmatins. The earlier classic wrk n the Green River Frmatin was dne by Bradley (1931) in the Piceance Creek Basin. The Green River Frmatin (TGR) is divided int three members. Frm ldest t yungest these are the Duglas Creek Member (Tgd), Garden Gulch Member (Tgg) and Parachute Creek Member (Tgp). The Green River Frmatin has tw principal interpretatins fr its general envirnment f depsitin (Buchheim and Surdam, 1977). The stratified-lake mdel is based n anerbic, H S rich cnditins within a relatively deep lake. The playa-lake mdel is based n aerbic cnditins f a shallw lake with fringing mud flats. Piceance Creek Area The Duglas Creek Member was named by Bradley (1931) fr expsures alng Duglas Creek miles suth f Rangely, Clrad. There the member is 200 t 800 feet thick with large prtins f sandstne, limestne, algae reefs and lites, Ostracds, fish and turtle bnes and gar-pike scales help t define the envirnment f depsitin as near the lakeshre and ften in shallw water. Bradley (1929) ntes that the algae reefs are up t 18 feet thick and make up t 8 percent f the Duglas Creek Member. The algae reefs are irregularly distributed thrughut the entire Green River Frmatin and represent shre depsits in water less than six feet deep (Bradley, 1929). The Garden Gulch Member was named by Bradley (1931) fr expsures alng Garden Gulch, a shrt tributary t Parachute Creek in the Piceance Creek Basin 20 miles west f Rifle, Clrad. In the Piceance Creek Basin the Garden Gulch Member is 200 t 700 feet thick and is characterized by paper shales. Fssils cnsist f stracds, fish scales and plant fragments. The member represents nearshre lacustrine units (Bradley, 1931 and Cashin, 1967). The Parachute Creek Member was named by Bradley (1931) fr expsures near Parachute Creek in the Piceance Creek Basin and ranges in thickness frm 200 t 1,000 feet. The principal kergen rich il shale beds distinguish this member that frmed in shallw t deep lake envirnments. Sutheast Uinta Basin The three members f the Green River Frmatin have been utilized by Cashin (1967) in the sutheastern part f the Uinta Basin t study the fuel resurces f the Green River Frmatin east f the Green River. Here the Duglas Creek Member is 900 t 1,200 feet thick and cntains

18 11 six thin intertnguing nearshre-lacustrine units. The Garden Gulch Member is up t 230 feet thick and was depsited alng a trugh f Lake Uinta in less than 75 feet f water (Cashin, 1967). The Garden Gulch Member is characterized by thin even-bedded gray and brwn shales that are lcally paper thin. The Parachute Creek Member is a 400 t 700 ft thick sequence f marlstnes, paper shales and siltstnes with lcal tuffaceus beds. The Mahgany ledge is a 2 t 60 feet thick sequence with a subsurface crrelative f Mahgany zne. The Mahgany bed represents the thick il shale bed cntaining the mst kergen and ccurs near the tp f the Mahgany ledge. The Mahgany bed is the mst useful and widespread key bed in the Green River Frmatin. The Mahgany marker is a tuffaceus bed averaging 0.4 feet thick and is lcated 9 t 20 feet abut the Mahgany bed. The Mahgany marker is a gray fine-grained unit that weather t range-brwn rectangular blcks. Abve data summarized frm Cashin (1967). Sunnyside Area At Kaiser Steel's Sunnyside cal mine the cal is lcalized within the Blackhawk Frmatin f the Mesaverde Grup. The relatinships f the stratigraphic nmenclature are seen in Figure 9. The cal seams are 5 t 15 feet thick and cntain medium vlatile bituminus cal. First magnitude faults within the mine generally strike N30 W and have cmmn displacements f ne t fur feet with a maximum displacement f 33 feet. Twenty miles suth n Kaiser Steel's Suth Lease, faults have cmmn displacements f 10 t 100 feet with a maximum displacement f 150 feet (persnal cmmunicatin, Lynn Huntsman, Chief Engineer, Sunnyside Mine, 1980). In the Sunnyside Tar Sands area the Mahgany ledge has nt been identified Hwever, sme thin il shale beds exist as utcrp and have als been identified in the drill cre. Western Uinta Basin In the western Uinta Basin the uppermst Cretaceus t lwer Ecene strata have been divided int three majr intertnguing lithfacies f pen lacustrine, marginal lacustrine and alluvial by Fuch (1975) and Ryder, Fuch, and Elisn (1976). The pen lacustrine lithfacies is cmmnly 1,475 t 2,300 feet thick and is characterized by mud-supprted carbnate and calcareus claystnes. The marginal lacustrine lithfacies is cmmnly 985 t 1,150 feet thick and is characterized by calcareus claystne, mud- and grain-supprted carbnates and sandstnes f the lake margin carbnate flat, deltaic and interdeltaic depsitinal envirnments. The alluvial lithfacies is cmmnly 1,970 feet thick and is characterized by interbedded red claystne, siltstne and channel sandstne depsits f the high mudflat, lwer deltaic plain and alluvial fan envirnments. 001 Oil and Gas Fields The Uinta Basin cntains imprtant il and gas fields as shwn in Figure 8. The principal prducing hrizns are lcalized within the lwer prtin f the Green River Frmatin and the upper prtin f the Wasatch Frmatin (Ritzma, 1972). The fur principal il fields in the Uinta Basin

19 12 are lcalized near the axial prtin f the basin and lcated 25 miles suth and west f Vernal, Unitah Cunty, Utah. The fur principal il fields are the Greater Red Wash Field (1969 cumulative prductin 69,425,000 barrels with estimated reserves 65,425,000 barrels) and Ashley Valley, Bluebell and Rsevelt fields (cmbined 1969 cumulative prductin 20,829,000 barrels and with cmbined estimated reserves 15,921,000 barrels). The Bluebell field is in Duchesne Cunty, while the ther three fields are in Uintah Cunty. The five principal gas fields f the Uinta Basin are lcated in the nrtheast and sutheast prtins f the basin. The Greater Red Wash field (1969) cumulative prductin 196,781,756 MCF) and Chapita Wells field (1969 cumulative prductin 15,563,905 MCF) are lcated in the nrtheast prtin f the basin and within Uintah Cunty. The three ther gas fields are lcated in the sutheast prtin f the basin and within Grand Cunty and include the Bar- field (1969 cumulative prductin 12,315,342 MCF), San Arry field (1969 cumulative prductin 43,541,680 MCF), and Westwater Brysn Canyn field (1969 cumulative prductin 23,895,880 MCF). Data frm Ritzma (1972). The Greater Red Wash field is the largest gas prducing field in Utah, secnd largest il prducing field in Utah and may represent the largest il field in the wrld that prduces frm lacustrine rcks (Chatfield, 1972). ^

20 13 GEOLOGY OF THE PROJECT AREA Preview Near Bruin Pint flat lying sedimentary rcks f the Green River Frmatin are well-expsed alng the Ran Cliffs and represent the nly rcks encuntered in the varius drill hles. The six mile lng and 150 feet high expsures n the cliff faces prvide an excellent crss sectin f the Green River Frmatin and the Sunnyside delta cmplex as seen frm Pht N. 2 and the Reginal Map. During 1980 and 1981 detailed lithlgic and stratigraphic analysis f eleven measured sectins ttalling 10,746 vertical feet and twentyne cred drill hles ttalling 17,597 feet have helped t determine the gelgical relatinships f majr and minr envirnments f depsitin that have defined varius aspects f the Sunnyside delta cmplex lcated in the suthwest prtin f ancient Lake Uinta. On the basis f lithlgical and palentlgical data the Green River Frmatin was separated in the field int the Parachute Creek Member, Garden Gulch Member and Duglas Creek Member as seen n Pht N. 2. The Parachute Creek Member represents the lake facies. The Garden Gulch Member represent the shre facies and the Duglas Creek Member represents the delta facies. The three members f the Green River Frmatin each cntain characteristic features, smetimes verlapping and nt slely unique, that help t separate the members in the field. The tar sands are lcalized within prus sandstnes assciated with channel depsits and sheet sands. These tw general categries f tar sands can be divided int three specific lithlgic types f depsits...channel, channel muth bar and beach bar. The rcks in the prject area cnsist f thin t massive fine grained t very fine grained bituminus t nnbituminus sandstnes; thin streaky saturated bituminus siltstnes, nnbituminus red, green, gray and tan shales; thin bituminus t nnbituminus limestnes; and ccasinal thin cnglmerates assciated with the sandstnes. The Sunnyside delta cmplex as defined by the distributin f tar sands can be separated int a main suthern area and an auxiliary nrthern area as seen n the Reginal Map. The suthern area cnsists f the main delta lbe that is centered n the AmcKaiser Tract. The nrthern area cnsists f a smaller subdelta cmplex that is centered n the il and gas leases largely cntrlled by Amc. The majr envirnments f depsitin within the delta cmplex include lacustrine, delta and delta plain. Green River Frmatin The Green River Frmatin has been separated int three members cnsisting frm tp t bttm f the Parachute Creek Member, Garden Gulch Member, and Duglas Creek Member. 0 0 l ^ Specific field criteria have been develped t help separate these three members. Nevertheless, picking these ften cnfrmable cntacts is difficult and smetimes arbitrary due t the multiple transgressins and regressins that have ccurred within the Sunnyside delta cmplex. Hwever, after the Green River Frmatin was separated int these three members it was realized that the Parachute Creek Member represents the lake facies, the Garden Gulch Member represents the shre facies and the Duglas Creek Member represents the delta facies.

21 14 The general attitude f the sedimentary beds is N25 W with a dip f 5 NE. In the field the dips have a cmmn range f values frm 3-8 NE. The beds have been tilted slightly frm their riginal hrizntal psitin, and structural defrmatin r faulting is minimal. Faults are nt cmmn and where faults d exist they are f a very limited nature with minr displacements as indicated by bth field and drill cre evidence thrughut the prject area. Fur examples illustrate this cnclusin. Example 1: The mst visible and bvius fault zne fund in the prject area is lcated abut 1,000 feet suth f the uppermst prtin f measured sectin N. 6 as nted n the Reginal Map, scale 1" = 2,000 feet. Here a limestne bed is displaced 6 feet by a N75 W, 86 SW trending reverse fault. The fault zne is 4 t 12 inches wide and is filled with distrted rich tar sand. Example 2: Expsures f a N55 W trending nearly vertical fault with a prbable 3-5 ft displacement exists within an inaccessible wall f the small 1892 vintage quarry lcated near 18,000 NW 6,000 SW (see Gelgic Map Suthern Half, scale 1" = 500 feet). Example 3: Alng Range Creek in the vicinity f Amc N. 25 and N. 26 anmalus dips have a range f NE. Drill hle evidence frm angle hle Amc N. 25 that passes beneath Range Creek indicates a mnclinal flexure in this vicinity f Range Creek with n fault gauge r slickensides present. Example 4: N field evidence exists fr a majr fault alng the surface f Range Creek within the prject area r fr sme six miles dwnstream t drill hle, Amc Prductin, Kaiser Steel N. 1. Other structural infrmatin exists n jints and fracture systems. The results f 1232 jint measurements by Glder Assciates (1982) alng the Bruin Pint rad, in the asphalt mine and adjacent prtins f the Ran Cliffs indicates fur majr and five minr jint sets. The general attitudes f the fur majr jint sets are: N75 W, 88 D SW; N40 W, 88 SW; N60 E, 88 NW; and N40 W, 10 NE. The general attitudes f the five minr jint sets are: N18 E, 50 NW; N26 W, 52 SW; N75 W, 61 SW; N37 E, 52 SE; and N59 E, 40 SE. Thurber and Wei burn (1977) indicate that an extensive vertical fracture system exists in the vicinity f Shell N. 2. The vertical fracture system has a fracture fre-. quency f ne fracture per fur feet with a directin f EW t N70 E. Q0 J Parachute Creek Member The Parachute Creek Member represents the lake facies and is defined by prdelta and delta frnt envirnments f depsitin. This member is characterized by laminated tan t buff shales and thin discntinus bituminus sheet sands. Ersin has remved an unknwn prtin f this member in the nrthern area, but its average thickness is abut tw hundred feet in the suthern area. The Parachute Creek Member characteristically cntains thinly laminated buff t gray shales; limited ne t twelve inch thick znes f il shale; limited

22 15 ne t twelve inch thick limestne znes; and streaky saturated siltstne znes ne t twelve inches thick. The laminatins in the shales are cmmnly less than 0.25 mm thick and in the field weathering ften creates a paper shale texture. The thin il shale znes are fund nly within the Parachute Creek Member. Tuffaceus white t light range bentnitic znes have been lcated in sme drill hles. Tuffaceus znes have nt been lcated in the utcrp. The limestnes are micritic t bimicritic with ccasinal znes f stracd cquina. The stracds are cmmnly abut 0.5-lmm in size and represent the micrfssil fauna. "An stracd is a tiny crustacean whse bdy is entirely enclsed in a drsally hinged bivalve shell" (Grande, 1980, p. 236). In the pilt mine utcrp area a single fssil catfish abut ne ft lng was fund within a three inch thick talus slab f il shale and represents the macrfssil fauna. The fssil catfish appears t be similar t the type (Astephus antiquus) pictured and described by Buchheim and Surdam (1977) and Grande (1980). The macrfssil flra are represented by algal-laminated sediments, strmatlites and debris f palm-like plant fragments. The base f the Parachute Creek Member is determined by a cmbinatin f multiple criteria including: a lcal uncnfrmity with fish scales in the underlying intrafrmatinal cnglmerate (IFC); an algal laminated zne capping a micritic limestne; presence f il shale and paper shales abve but nt belw; a change frm laminated buff r gray shales t prly bedded gray-green shales that frm small rughly cubic frms n weathered surfaces. On cliff faces the Parachute Creek Member is ften characterized by relatively limited r sparse vegetatin. In additin the Parachute Creek Member cntains ccasinal minr bituminus sandstnes assciated with channel and sheet sand depsits. These bituminus sandstnes are cmmnly abut five t fifteen feet thick and utcrp ver relatively shrt lateral distances frm five hundred t fifteen hundred feet. Garden Gulch Member The Garden Gulch Member represents the shre facies and is defined by shreface, bay, beach and bar envirnments f depsitin. This member is characterized by fssiliferus limestnes and prly bedded gray-green shales. The thickness f this member as based n measured sectin and drill hle data differs cnsiderably depending upn its relative psitin in the delta cmplex. Within the prximal prtins f the main delta lbe and thus nearest t the Ran Cliff the Garden Gulch Member averages abut three hundred feet thick. In the distal prtin f the main delta lbe near Range Creek the Garden Gulch Member averages abut five hundred-fifty feet thick. In the peripheral prtins t the nrth and dwn Range Creek, the Garden Gulch Member is cmmnly six n.r^ hundred t eight hundred fifty feet thick. ^ The Garden Gulch Member is characterized by numerus limestne beds with thin znes f stracds, algal-laminated sediments and strmallites; massive prly bedded gray-green shales; limited but diagnstic black shiny fish scales; rare gar-pike fish fssils; biturbated shales and siltstnes; thin znes f streaky saturated t saturated siltstnes; and sme imprtant bituminus channel and sheet sand depsits. The micritic t bimicritic limestne beds are frm ne t ten feet thick and when prus cntain high degrees f saturatin. The massive prly bedded gray-green shales are prly expsed n the

23 16 cliff face but small rck fragments rughly cubic in frm are abundant. Occasinal thin znes f paper shales d exist within the upper part f the Garden Gulch Members. The Garden Gulch Member cntains a diagnstic and significant fssil assemblage that is helpful in establishing its shreface relatinship in the Sunnyside delta cmplex. Macrfssil fauna are represented by fish scales and ne lcality f numerus gar-pike fish fssils n measured sectin N. 3. Cmparisns with data and phts in Grange (1980) suggest that the fish fssils fund in measured sectin N. 3 are gar, Lepissteus cuneatus. Grande (1980) describes gar scales as diamnd-shaped ganid scales with an enamel-like shiny plish. The black fish scales in the Sunnyside area are cmmnly parallelgrams with inch dimensins. These gar-pike fish scales smetimes ccur in the Parachute Creek and Duglas Creek members but the vast majrity are lcalized within the Garden Gulch Member. Micrfssil fauna are represented by large quantities f stracds. Macrfssil flra are represented by ne t twelve inch thick znes f algal-laminated sediments and ne t twenty inch high strmatlites. These algal znes and algal heads were frmed in near-shre t intertidal t mud-flat envirnments assciated with the lake shre. Varius sized fragments f algal-laminated sediments and strmatlites are frequently fund within sme bituminus sandstnes. This transprted algal material is ne f the multiple criteria used t distinguish channel muth bar depsits. Tw large transprted algal heads exist near the upper prtin f measured sectin N. 6. The base f the Garden Gulch Member is determined by a cmbinatin f multiple criteria including the beginning f abundant red shales cupled with a flat tpgraphic bench; general lss f fssiliferus limestnes and gray-green shales; and the beginning f abundant bituminus channel depsits. Duglas Creek Member The Duglas Creek Member represents the delta facies and is defined by channel, levee, marsh and fldplain envirnments f depsitin. This member is characterized by red shales and massive bituminus sandstnes. As seen frm Pht 2 the upper prtin f the Duglas Creek Member is bituminus, while the lwer prtin is nnbituminus. In the vicinity f the main delta lbe the Duglas Creek Member averages 1,230 feet thick as determined frm data assciated with measured sectins N. 1, 2, and 4. The bituminus upper prtin averages 710 feet thick, while the nnbituminus lwer prtin averages 520 feet thick. The true thickness f the Duglas Creek Member within drill hles cannt be determined as the drill hles cmmnly nly extended a few tens f feet belw the bituminus prtin and are terminated just befre r within the> ~ first clean sandstne. 0^ Lithlgically the upper prtin f the Duglas Creek Member is characterized by massive fine grained t very fine grained bituminus sandstnes; streaky saturated t saturated siltstnes; red t marn shales; ccasinal thin znes f cal and sme thin but prminent limestnes. Megascpically the bituminus sandstnes are fine grained t very fine grained quartz arenite t quartzse sandstnes with well-srted subangular t subrunded quartz grains plus ne t tw percent fine grained t medium grained muscvite. The medium grained

24 17 muscvite has a distinct crinkled texture. Sandstnesiltstne znes near the cal beds f the Sunnyside Mine cntain crinkled muscvite and als represent the nly significant surce f muscvite in the regin. Megascpic mineralgical analysis f the different frmatins in the regin strngly suggests that the muscvite is derived frm the micaeus znes abve and belw the Blackhawk cal beds. The sands in the Sunnyside delta cmplex were prbably derived by secnd cycle ersin f the San Rafael Swell. The sands in the Sunnyside delta cmplex were prbably retransprted nly miles. Red shales are als characteristic f the Duglas Creek Member and cupled with carbnized and pyritized rtlets help define the marsh envirnment. Fragments f transprted lgs and cal exist within prtins f measured sectin N. 1, 4 and 5 as well as within the nrth pit f the asphalt mine. The cal is spatially near transitins between marsh and channel envirnments f depsitin. The limestnes within the Duglas Creek Member cnsist f algal and stracdal znes. The algal znes are thickest within the Duglas Creek Member and range frm ne t three feet thick with single algal heads ne t tw feet acrss. These thin but prminent algal strmatlite znes attest t minr lake transgressins within the Sunnyside delta cmplex. Znes f stracdal limestnes ne t five feet thick exist within the middle and lwer prtins f the Duglas Creek Member. On the surface these stracd znes smetimes have a white litic texture pssibly caused by weathering. Swain (1964) nted that calcite vergrwths are present n sme stracd bivalves and frm an litic texture. The lwer stracd znes help t establish tpgraphic cntrl n the lwer limits f the Duglas Creek Member f the lacustrine Green River Frmatin versus the cntinental Wasatch Frmatin. Sunnyside Delta Cmplex The Sunnyside delta cmplex as defined by the distributin f tar sands cntains a main delta lbe, a minr subdelta and elngated peripheral ffshre bar systems. The Sunnyside delta cmplex is well-expsed alng the Ran Cliffs fr six miles. The principal rientatin f the majr channels is N40 t 70 E, and the principal directin f delta prgradatin is nrtheast. The general limits f the Sunnyside delta cmplex are utlined n the Reginal Map (scale 1" = 2,000 ft). These limits are defined by tar sands with MSAT's ttalling at least 100 feet. MSAT represents the ttal ftage f main saturated znes that are at least 10 feet thick. The delta cmplex is sme six miles lng parallel t the shreline by ne t tw miles wide perpendicular t the shreline and tw hundred t twelve hundred feet thick. The Sunnyside delta cmplex can be separated int a main suthern area and an auxiliary nrthern area. The suthern area cntains the main delta lbe, r Bruin Pint subdelta, and is centered n the AmcKaiser Tract. The principal tar sands in the suthern area are lcalized largely within the upper prtin f the Duglas Creek Member and cnfined t a 1,000 ft thick zne n the Ran Cliff face that pinches ver a distance f tw miles t a 200 ft thick zne in the vicinity f Range Creek. The nrthern auxiliary area cntains the smaller Dry Canyn subdelta and largely lies within an area f il and gas leases primarily cntrlled by Amc. The principal tar sands in the nrthern area are within the Garden Gulch Member and lcalized within a 500 t 1,000 ft thick zne n the Ran Cliff face that pinches ver a distance f ne mile t a 150 ft thick zne in the vicinity f the Dry Canyn ridge rad.

25 The Sunnyside delta cmplex has an veral lens r tapering elliptical shape with the lng axis riented nrthwest and the shrt axis riented nrtheast. Sme f the lensellipse has been remved by ersin assciated with the Ran Cliff face. The thickest prtin f the lensellipse is assciated with the Asphalt Mine and the AmcKaiser Tract. Based upn the tar sand distributin the lense r ellipse tapers in all directins t the nrth, east, and suth. The 1,500 ft deep and six mile lng expsures f the Sunnyside delta cmplex alng the Ran Cliff faces are cnsidered t be unique and ffer an excellent pprtunity t dissect a small lacustrine delta cmplex. The Sunnyside delta cmplex represents a small scale versin f the classic delta mdel. The Sunnyside delta cmplex is cnsidered t be fifty t ne hundred times smaller than the Mississippi River delta cmplex. On the basis f lithlgical and palentlgical data within the Sunnyside Tar Sands prject area the Green River Frmatin was separated in the field int the Parachute Creek Member, Garden Gulch Member and Duglas Creek Member. The Parachute Creek Member represents the lake facies. This member nly exists in the suthern area where it has an average thickness f sme 200 feet. The Garden Gulch Member represents the shre facies and has an average thickness f 300 feet within the prximal prtins f the main delta lbe and thickens t feet in the distal and peripheral prtins f the main delta lbe. In the nrthern area the Garden Gulch Member attains thickness up t feet. The Duglas Creek Member represents the delta facies and has an average drilled thickness f 650 feet within the main delta lbe. The majr envirnments f depsitin assciated with the Sunnyside delta cmplex are lacustrine, delta and delta plain. The minr lacustrine envirnments f depsitin are prdelta, delta frnt, shreface, bay and beach bar. The minr deltaic envirnments f depsitin include channel muth bar, levee, shreface, bay, bay fill, and beach bar. The minr deltaic plain envirnments f depsitin include channel, levee, marsh, splay and fldplain. The cmmn characteristic features f rcks assciated with these different envirnments f depsitin are detailed in Table 7. During its develpment the Sunnyside delta cmplex experienced a majr prgrading phase in Duglas Creek time and a majr transgressive phase in bth Garden Gulch and Parachute Creek time. Hwever, numerus minr transgressins and regressins ccurred during the cmplete develpment f the Sunnyside delta cmplex. Three f these minr transgressive-regressive cycles are wellexpsed in the prsed Pilt Mine Cutcrp Area as seen n Pht N. 4 and n the Gelgic Map Suth Half (scale 1" = 500 feet). This area was examined in detail; the traverse data appears in Table 10; and the traverse statins are lcated n the Gelgic Map Suth Half (scale 1" = 500 feet). These multiple transgressins and regressins have caused numerus cyclic changes in the relative psitins f tar sand units and varius envirnments f depsitin. Numerus lateral and vertical changes in the lithlgy exist within the delta cmplex. These lateral and vertical variatins represent abrupt changes within intervals f less than 10 feet and mre cmmnly less than 1 ft. These changes are visualized by the baseline and 3800 NE crss sectins and the lngitudinal sectins 12,000 NW, 17,600 NW and AA 1 near 26,000 NW. The specific vertical variatins are realized frm examinatin f the clumnar sectins and Phts 4-8. The detailed hrizntal variatins are best seen frm data f the three hrizntal drill hles drilled by Signal Oil and Gas in the nrth

26 19 pit f the asphalt mine (see Pht 5 and Table 6). All hles are riented N32 W with #101 (TD 366') as the center hle. Hle #102 (TD 373') is 30 feet westerly frm #101, and hle #103 (TD 390') is 50 feet easterly frm #101. Data frm these three hles indicates abrupt lateral variatins f lithlgy and tar sand cntent within intervals f less than 10 feet (see Table 6). Literature research indicates that understanding river muth prcesses and the frmatin f river muth bars is the mst fundamental and critical element in cmprehending the cyclic evlutin and vertical relatinships f a deltaic sequence (Wright 1977, and Cleman and Prir, 1980). River muth bars, bar finger sands, distributary muth bars, and channel muth bars are used synnymusly. Figure 6 represents a schematic diagram f bar finger sands (channel muth bars). Tar Sands The tar, bitumen, asphalt, r il impregnated znes in the Sunnyside area are lcalized within prus and permeable sandstnes, siltstnes and limestnes in the upper prtin f the Green River Frmatin. The vast majrity f bituminus znes are lcalized within sandstne bdies lcated within the upper prtin f the Duglas Creek Member and the Garden Gulch Member. Previusly the stratigraphic psitin f the tar sands has ften been placed within the Wasatch Frmatin, but the majrity f the tar sands are lcated in the upper prtin f the Duglas Creek Member. Hlmes, Page and Averitt (1948) placed the majrity f the bituminus sands in the Wasatch Frmatin. Campbell (1975) nted that recent wrk by the Utah Gelgical and Mineral Survey places the tar sands in the upper part f the delta facies (terminlgy f the western Uinta Basin) which rughly crrelates with the Duglas Creek Member (terminlgy f the eastern Uinta Basin). Wilsn and Ziemba (Amc Prductin Reprt f March, 1977) indicate that the tar sands are lcalized within the Green River Frmatin. The tar sands are thickest in the central prtin f the delta cmplex and get prgressively thinner and stratigraphically higher in all directins. Within the thick central prtin lcated near the Asphalt Mine and the Amc pilt mine area the tar sands are predminantly lcalized within the Duglas Creek Member. On the average the tar sands are assciated with eleven separate saturated znes within the main delta lbe. Within the main delta lbe the Duglas Creek Member cntains abut seventy-five percent f the tar sands, the Garden Gulch Member cntains abut twenty percent f the tar sands and the Parachute Creek Member cntains abut five percent f the tar sands. In the mre distal and thinner prtins f the delta cmplex the tar sands are lcalized within the Garden Gulch Member. The tar sands are assciated with three t eight separate saturated znes within the minr subdelta in the nrthern area. The numerus saturated znes in the Sunnyside delta cmplex range in thickness frm feet and cntain bitumen that ranges frm five t thirteen weight percent bitumen r twelve t thirty-tw gallns per tn. Tar films exist in fractured shale and may represent a hal effect in areas adjacent t tar sands. The blackness f the fish scales appears t be related t the intensity f bitumen cntent.

27 20 The tar sands are largely cnfined t sandstne units. These sandstnes represent specific envirnments f depsitin that are spatially and temprally assciated with specific prtins f the delta cmplex. In general the tar sands are lcalized within channel depsits and sheet sands. Mre specifically the tar sands are assciated with channel depsits, channel muth bars and beach bar depsits. T sme extent there are gradatinal aspects assciated with these three specific types f sandstnes. Hwever, multiple criteria have been generated while examining many 1,000's f feet f rck during lgging cre and measuring sectins. These multiple criteria can be used t distinguish r separate channel depsits, channel muth bars and beach bar depsits. The distinguishing features in separating these three types f sandstnes are based n sedimentary structures, bita and lithlgy. Grain size is nt a diagnstic feature as all the sandstnes cntain abut percent fine grained sand, percent very fine grained sand and percent silt- and clay-sized particles. Channel depsits and beach bar depsits can be cnsidered the tw end members f this series with channel muth bars being transitinal t bth. Channel depsits are distinguished by the fllwing criteria: basal scurs; IFC's (intrafrmatinal cnglmerates) with nnbituminus siltstne intraclasts; trugh crss bedding; ne percent muscvite cntent; n r very limited biturbatin; tendency fr "subangular" grains; and an assciatin with red shales f adjacent marsh envirnments. Channel depsits are shestring-like with abrupt lateral changes and are ften feet thick. Channel muth bars are distinguished by the fllwing criteria: IFC's with limestne intraclasts; planar crss bedding and planar bedding; climbing ripple laminatins with high cncentratins f muscvite (2-3 percent) and muscvite laminae; internal distrted bedding largely caused by gas heave structures; lcal rich bitumen cntent that is sap-like and ften zes, runs, and drips n the utcrps with suthern expsures; nntransprted internal limestne znes; brken and transprted algal material; lcal fish scales; ccasinal znes a few inches thick with numerus stracds in a sand matrix; biturbatin near tp; tendency fr "subrunded" grains; and an assciatin with gray-green shales f adjacent shreface envirnments. Channel muth bars are lenticular and laterally gradatinal sandstne bdies that range in thickness frm sme feet. Beach bar depsits are distinguished by the fllwing criteria: abundance f planar bedding; fixed basal algal limestne znes; thin bita trash znes; nearby mudcracks; and a cmplex assciatin with adjacent shaley envirnments f depsitin including red shales f the marsh, live-drab shales f the bays and gray-green shales f the shreface. Beach bar depsits are sheetlike, laterally cntinuus and ften 5-15 feet thick. Knwledge f the gemetry f the river muth bar systems at the Sunnyside prject wuld be a helpful guide in the evaluatin f the tar sands. The gemetry f river-muth bars reflect the effluent dispersin patterns at the river muth. Wright (1977) has studied river-muth prcesses and their resulting bar frms and placed them int three basic categries: (1) inertia dminated effluents, (2) frictin dminated effluents, and (3) buyant dminated effluents. (1) The inerta dminated effluents are nrmally assciated with steep gradient streams entering deep fresh water lakes, have a lw spreading angle and prduce a narrw river muth bar system. These inertia dminated effluents are relatively rare in the gelgic recrd and prduce a depsitinal pattern shwn in Figure 11. (2) The frictin dminated effluents 00121

28 21 are nrmally assciated with rivers that prgrade acrss flat shallw ffshre slpes, have a wide spreading angle and prduce shaling and frequent channel bifurcatins t frm a wide river-muth bar system. The rivers have a high utflw velcity and a high bed lad fr at least part f the year. The shaling and frequent channel bifurcatins result in triangular "middle grund" shals r shallw bars as shwn in Figure 12. The crevasse-splay subdeltas f the Mississippi Delta are examples f frictin dminated depsitin in river-muth envirnments. (3) The buyant dminated effluents are nrmally assciated with relatively deep river muths jined by mderately deep salt water. This causes a salt water intrusin at the river muth and results in a fresh water utflw that spreads as a buyant plume abve the salt water. The buyant dminated effluents prduce narrw elngated distributaries with parallel levees and few bifurcatins as shwn in Figure 13. The Suth Pass and Suthwest Pass distributaries f the Mississippi Delta system represent examples f the buyant dminated effluents. The abve infrmatin was summarized frm Wright (1977). In the Sunnyside tar sands area the smewhat cyclic presence f algal-laminated sediments and strmallites suggests flat shallw near shre envirnments. Rlled and separated strmallites in tar sands slightly suth f measured sectin n. 6 suggest high utflw velcities in flat shallw near shre envirnments. Ryder, Fuch, and Elisn (1976) indicate that in the western Uinta Basin a marginal lacustrine facies exists and is dminated by depsitinal envirnments interpreted t be lake margin carbnate flat, deltaic and interdeltaic. Ostrasds and lites are cmmn within these lake margin carbnate flats. At Bruin Pint the well-expsed utcrp patterns f the tar sands between measured sectins N. 2 and N. 3 and thse shwn in Pht 3 indicate separate sandstne units with lw angle interfingering r cntinuus lateral prgressins frm ne sandstne unit t anther. These varius factrs suggest multiple shaling and cmplex sandstne dispersin patterns within the Sunnyside delta cmplex. Thus the river-muth effluents in the Sunnyside area are interpreted t be frictin dminated and result in cmplex patterns f bifurcating subaqueus channels, middle grund r shallw bars, and arcuate subaqueus levees as shwn in Figure 12. In general, the tar sands within the Sunnyside delta cmplex will exhibit gradual lateral changes and abrupt vertical changes. The tar sand units shuld cntain sme pinch and swell aspects within a hrizntal cntinuum r znes. The distributin f sand-, siltand clay-sized particles shuld have a scattered dispersin pattern which at times and places may be lcalized r skewed in a dminant particle size. In summary, this brief examinatin f river muth bar systems imparts a greater understanding f the gemetry and distributin f the tar sands in the Sunnyside delta cmplex. Bth drill hle and measured sectin data suggest that the bttm f the tar sands has a relatively unifrm elevatin at depth. The elevatin at the base f the tar sands generally varies within limits f several hundred feet as seen frm the five gelgic sectins. In the main delta area the bituminus znes terminate at elevatins averaging 8,856 feet with a range f 8,840-8,880 feet as determined frm measured sectins N. 1, 2, and 4. In the peripheral prtins f the delta cmplex the bituminus znes terminate at elevatins averaging 9,077 feet with a range f 8,905-9,430 feet as determined frm measured sectins N. 6, 7, 10, and

29 22 In the vicinity f Range Creek a C0 2 gas zne exists at depth and slightly abve the base f the tar sands. This area is utlined n the Gelgic Map, Suth Half (scale 1" = 500 feet). Based n seven drill hles that encuntered C0 2 gas at depth (namely N. 9, 10, 14, 17, 21, 22, and 26), the gas zne averages 76 feet thick ver a 93 ft interval and exists at average elevatins between 8,723 t 8,816 feet. The gases are cmmnly entrapped in weak t prly saturated sands near the base f the principal saturated zne. These gases exist slightly abve the barren sands and are ften assciated with 1-2 percent disseminated pyrite. The gases cnsist predminately f C0 2 and CO with trace amunts f methane and ther gases as nted in Table 8. The pyrite appears t be pstdepsitinal and prbably frmed in assciatin with the develpment f the bitumen. The deep drilling within Amc N. 4 was extended fr 235 feet belw the base f the lwest tar sands. Reinterpretatin f these cre lgs indicates that channel muth bars and shreface envirnments f depsitin persist at depth. The shreface envirnments include bth stracd and algal limestne znes. Thus the Sunnyside delta cmplex extends belw the tar sands. The relatively unifrm bttm elevatin assciated with the wide distributin f the tar sands appears t be related t an ancient il-water surface. This palewater interface may represent an ancient grund water level that existed in pst Sunnyside-delta-cmplex time. The palewater interface may well represent a majr factr in the rigin and distributin f the Sunnyside Tar Sands. Specific analytical data n the tar sands is bth limited and scattered. Eight analyses frm tar sands within the Pan American-Prestn Nutter CH-1 shw the fllwing: average prsity f 24.3 (range ); average permeability f 398 md (range ); average il saturatin f 42.8% (range ); average water saturatin f 16.9% (range ). The Sunnyside Tar Sands have prsities f percent and permeabilities f md (Wells, 1958). The Sunnyside crude has a viscsity f 60 cp at 340 F with n natural mbility at riginal reservir cnditins (Thurber and Welburn, 1977). Amc Prductin data frm Amc Ns. 2, 3, 5, 6, and 7 shw the fllwing: eleven analyses with average API gravity f 9.2 (range ); eight analyses with average C cntent f 85.3 (range ); eight analyses with average H cntent f 10.4 (range ); and based n ne reprted value an N cntent f 0.84 wt% and S cntent f 0.30 wt %. The "fines" cntent f the tar sands differs within small limits (Calkin, 1981b). The term "fines" refers t particle sizes smaller than carse silt, minus 325 mesh, r less than 44 millimicrns (ym). Channel depsits average percent "fines", while sheet sands average 23.5 percent "fines". Bituminus siltstnes and limestnes have a high percentage f "fines" appraching 40 percent and 70 t 80 percent respectively. The particle size distributin values and bitumens cntent assciated with the different types f tar sands are summarized as fllws: 00123

30 23 Envirnment f Depsitin % Medium Sand +60 Mesh % Fine Sand Size ; Distribut in % Very Fine Sand % Carse Silt % Silt & Clay -325 Mesh Bitumen Cntent GalsTn Channel Depsits Channel Channel Muth Bar? Sheet Sands 1Q Beach, Bar As seen frm the abve summarized values f Cre Labs Inc. data, small variatins in the particle size distributin exist in the tar sands. These are f limited value fr the field identificatin f the different types f sandstne depsits and suggest a relatively unifrm "fines" cntent assciated with the tar sands. The mineral cmpsitin f the tar sands are categrized by different percentages f quartz, feldspar, carbnates, clay minerals and pyrite that vary within small limits. The mineralgical analyses were perfrmed by Mineralgy, Inc. f Tulsa, Oklahma. Initial averages f the mineral cmpsitin and bitumen cntent in channel and channel muth bar depsits are summarized belw: Channel Depsits:,,, Channel Mineral Cmpsitin Quartz Feldspar Carbnates Clays Pyri te 0.9 Bitumen Cntent GalsTn & (Wt %) (6.813) Channel Muth Bar TR (10.133) The mst significant difference in these values is the bitumen cntent. This, in part, can be recgnized in the field and is caused by an increase in prsity assciated with the channel muth bar depsits. The difference in the pyrite cntent is best explained by the bttming f the tar sands. Since bth channel and channel muth bar depsits have a nearly similar inherent carbnate cntent appraching 10 percent, the mineral cmpsitin is f dubius value in the field identificatin f channel versus channel muth bar depsits. N thin sectin wrk has been dne yet n the tar sands, and it is inferred that the carbnate cntent represents a pst depsitinal grund water induced calcite cement.

31 24 REFERENCES Bituminus Sandstne Quarry, Sunnyside area, Carbn Cunty, Utah; undated anmymus cmpany cmpilatin f histrical reprts, Signal Oil tests and Bureau f Mines studies. Bradley, W.H., 1929 Algae reefs and lites f the Green River Frmatin: U.S. Gel. Survey, Prf. Paper 154-G. 1931, Origin and micrfssils f the il shale f the Green River Frmatin f Clrad and Utah: U.S. Gel. Survey, Prf. Paper 168. Buchheim, H.P., and Surdam, R.C., 1977, Fssil catfish and the depsitinal envirnment f the Green River Frmatin, Wyming: Gelgy, v. 5, p Byrne, J.V., LeRy, D.O., and Riley, CM., 1959, The chenier plain and its stratigraphy, suthwestern Luisiana: Gulf Cast Assc. Gel. Sc., Trans., v. 9, p Calkin, W.S., 1981a, Gelgic summary reprt f the Sunnyside Tar Sands Prject, Carbn Cunty, Utah, Vlume I & II: Amc Minerals Cmpany Reprt, dated 2481., 1981b, Preliminary reprt n a gelgic investigatin f the Sunnyside Tar Sands "fines" prblem, Carbn Cunty, Utah: Amc Minerals Reprt, dated Campbell, J.A., 1975, Oil impregnated sandstne depsits f Utah: Engineering, v. 27, p Mining Carrigy, M.A., 1971, Deltaic sedimentatin in Athabasca tar sands: Amer. Assc. Petrl. Gel. Bull, v. 55, p Cashin, W.B., 1967, Gelgy and fuel resurces f the Green River Frmatin Sutheastern Uinta Basin, Utah and Clrad: U.S. Gel. Survey, Prf. Paper 548. Chatfield, J., 1972, Case histry f Red Wash field, Uintah Cunty, Utah in_ Stratigraphic il and gas fields, edt. R.E. King: Amer. Assc. Petrl. Gel., Memir 16, p Cleman, J.M., and Gaglian, S.M., 1964, Cyclic sedimentatin in the Mississippi River delta plain; Gulf Cast Assc. Gel. Sc. Trans., v. 14, p Cleman, J.M., and Prir, D.B., 1980, Deltaic sand bdies: Amer. Assc. Petrl. Gel., Cntinuing Educatin Curse Nte Series N. 15. Feth, J.H., 1964, Review and anntated bibligraphy f ancient lake depsits (Precambrian t Recent) in the United States: U.S. Gel. Survey, Bull Fuch, T.D., 1975, Lithfacies and related hydrcarbn accumulatins in Tertiary strata f the western and central Uinta Basin, Utah in Sympsium n Deep Drilling Frntiers in the Central Rcky Muntains, edt. D.W. Blyard, Rcky Mtn. Assc. Gel., p ^

32 25 Glassett, J.W., Guld, W.R., and Glassett, R.M., 1978, Study cntract fr cmparisn f Utah and Athabasca Oil Sands, Cntract N. J f U.S. Bureau f Mines: Eyring Research Institute, Prv, Utah. Glder Assciates, 1980, Preliminary mining feasibility study, Sunnyside Tar Sands Prject, Vl. I, Gelgy and in situ reserves: reprt t Amc Minerals Cmpany., 1982, Interim reprt, Sunnyside Prject, getechnical and hydrlgical study: reprt t Amc Minerals Cmpany. Grande, L., 1980, Palentlgy f the Green River Frmatin, with a review f the fish fauna: Gel. Survey f Wyming, Bull. 63, 333 p. Hal ley, R.B., 1976, Textural variatins within Great Salt Lake algae munds in_ Strmatlites (edt) R.M. Walter, Elsevier, Amsterdam, p Hintze, L.F., 1972, Gelgic histry f Utah: Gelgy Studies, v. 20, Part 3, 181 p. Brigham Yung University Hlmes, C.N., Page B.M., and Averitt P., 1948, Gelgy f the bituminus sandstne depsits near Sunnyside, Carbn Cunty, Utah: U.S. Gel. Survey, Oil and Gas Investigatins, Map 86. Huntsman, L., 1978, The Sunnyside cal mines, Carbn Cunty, Utah: in_ Guidebk n Fssil Fuels and Metals, Eastern Utah and Western- Suthwestern-Central Clrad, edt. D.R. Shawe; Prfessinal Cntributins f Clrad Schl f Mines, n. 9, p Hyne, N.J., Cper, W.A., and Dickey, P.A., 1979, Stratigraphy f intermntane lacustrine delta Catatumb River, Lake Maracaib, Venezuela: Amer. Assc. Petrl. Gel., Bull. v. 63, p Kesemadinata, R.P., 1970, Stratigraphy and petrleum ccurrence, Green River Frmatin, Redwash Field, Utah: Cl. Sch. Mines Quarterly, v. 65, n. 1, 77 p. Lucas, P.T., and Drexler, J.M., 195, Altamnt-Bluebell: A majr fractured and verpressured statigraphic trap, Uinta Basin Utah i_n_ Sympsium n Deep Drilling Frntiers in the Central Rcky Muntains, edt. D.W. Blyard, Rcky Mtn. Assc. Gel., p McDnald, R.E., 1972, Ecene and Palecene rcks f the suthern and central basins i_n Gelgic Atlas f the Rcky Muntain Regin; Rcky Mtn. Assc. f Gelgists, p McGkey, D.P., 1972, Cretaceus System i_n_ Gelgic Atlas f the Rcky Muntain Regin; Rcky Mtn. Assc, f Gelgists, p Mnty, C.L.V., and Hardie, L.L., 1976, The gelgical significance f the headwater blue-green algal calcareus marsh i_r^ Strmatlites, (edt) M.R. Walter, Elsevier, Amsterdam, p Osmund, J.C, 1965, Gelgic histry f site f Uinta Basin, Utah: Amer. Assc. Petrl. Gel., v. 49, p u 6

33 26 Osterwald, F.W., Maberry, J.O., and Dunrud, C.R., 1981, Bedrck surficial and ecnmic gelgy f the Sunnyside cal-mining district, Carbn and Emery cunties, Utah; U.S. Gel. Survey, Prf. Paper Picard, M.D., 1971, Petrgraphic criteria fr recgnitin f lacustrine and fluvial sandstne, P.R. Spring il-impregnated sandstne area, Sutheast Uinta Basin, Utah: Utah Gel. & Mineral Survey, Special Studies 36. Picard, M.D., and High, L.R., Jr., 1972, Criteria fr recgnizing lacustrine rcks j_n Recgnitin f Ancient Sedimentary Envirnments, (edts) J.K. Rigby and W. K. Hamblin; Sc. Ecn. Patentl and Mineral., Spec Publ. N. 16, p Reineck, H.E., and Sigh, I.B., 1975, Depsitinal Sedimentary Envirnments: Springer-Verlag. Ritzman, H.R., 1972, The Uinta Basin ir± Gelgic Atlas f the Rcky Muntain Regin; Rcky Mtn. Assc, f Gelgists, p Ryder, R.T., Fuch, T.D., and Elisn, J.H., 1976, Early Tertiary sedimentatin in the western Uinta Basin, Utah: Gel. Sc. Amer. Bull., v. 87, p Ryder, T.A., 1976, Cretaceus invertebrate faunal assemblages f the Frntier and Aspen Frmatins, Calville and Rckprt area, Nrth-Central Utah: Mtn. Gelgist, v. 13, n. 3, p Sctt, R.W., 1977, Early Cretaceus envirnments and palecmmunities in the suthern Western Interir: i_n Cretaceus facies, faunas and paleenvirnments acrss the Western Interir Basin, edt. E.C. Kauffman: The Mtn. Gelgist, v. 14, ns. 3 & 4. Selley, R.C., 1970, Ancient Sedimentary Envirnments: Crnell Univ. Press. Shawa, M.S., edt., 1974, Use f sedimentary structures fr recgnitin f clastic envirnments: Canadian Sciety f Petrleum Gelgists. Spieker, E.M., 1946, Late Meszic and Early Cenzic histry f central Utah: U.S. Gel. Survey, Prf. Paper 205-D. Surdan, R.C., and Wray, J.L., 1976, Lacustrine strmatlites, Ecene Green River Frmatin, Wyming i Strmatlites, (edt) M.R. Walter, Elsevier, p Swain, F.M., 1964, Early Tertiary freshwater stracds frm Clrad, Nevada, and Utah and their stratigraphic distributin: Jurn. Pale., v. 38, p Thurber, J.L. and Welburn, M.E., 1977, Hw Shell Attempted t Unlck Utah Tar Sands: Petrleum Engineer, v. 49, n. 12, p. 31, 34, 38, 41. Tisst, B., Derr, G., and Hd, A., 1978, Gechemical study f the Uinta Basin: frmatin f petrleum frm the Green River Frmatin: Gechemical -Csmchimica Acta, v. 42, p l

34 27 Van de Graaf, F.R., 1972, Fluvial-deltaic facies f the Castlegate sandstne (Cretaceus), east-central Utah: Jur. Sed. Petrl., v. 42, n. 3, p Wells, L.F., 1958, Petrleum ccurrence in the Uinta Basin i_n Habitat f Oil, (edt) L.G. Weeks, p Wright, L.D., 1977, Sediment transprt and depsitin at river muths: synthesis; Ge!. Sc. Amer. Bull., v. 88, p a U 8

35 APPENDI FIGURES 1-13 TABLES 1-10 PHOTOS 1-8 ^

36 - - ' ' 8 (S)~B6untifui: lyrfjii,- CdaJviTIe - fhyuyi* Wasatchache. Natinal» tcttmunan t f entfrrw FrtsT..mn. 'lamttthl. lubmrr.-'r -f -, :> m. jamagru'. '. lnf*i lake Pint MilhJct. (11!,-S 10 1 ' Cppertn Bingham *& -Canyn-' ivertnt SALT LAKE CIT> j, Lark isl fcd n Win., ^ * r-bluffdalel T Stcktn "'Cm HtriM ' -" U'mh md Ourtr JUIBMM ^ yvduchesne ^---i-"-, J. J zieureka. lamingtn E'btrn I Mammth A* Gshen Mnt? J*>0 tf " te i k,' 'MantiLasat^ ' " ffl^c.^ -> - V:» itv A. r *- j runuif^, Frest] bgretn.. A'if* 1 '- ' a«w HHptr r.f;vcft.k j-1 Carbnville 1 ^ I, L-!--- -> Ashley "yfe- Natinal - Frest,j - -"A Price $-^ ',K.'". : '.,Hi«wth«Si Kenilwnh y Spring Gltn '''-~ ^r tl-mm'n ' 9. " w" 8',*rWS Velltngtn < ISunnyst A Spanish Frkja J-ejMapletn» i 1 r '. i lyr,.""^,^^..,. ^"J"?^- 'tr- fjtj) - -^* Carbn *%j. _- " [Sctpi f Hllw Jct.^ ' ' ' - " > ', ^ ". " ".! wtphraimj -'$' A-0 ",? Manti^ (Fayttn SlKlin AHurrtingin] 6 "Mten, gf' - -r- iwaudt > - > 1 -^, 3?v-l >*r.-~ Uintah and Out»-. = --~^~^f H.-. --, - ^Indian.Jiesenatin S*** -" ^ -,. i «' ^ ' ^... ^ i' w" W^.-'-^. - «- - 9 n ^ Richfield 1 J «* MfVl #«0f J fc- tlrjrtrr. «ap5r^-<5>^jnre' inrqe'n.^a>t n. - j ^ " nawfv, Saviar-^ ', Mnalf* - - S r Mtn GENERAL LOCATION MAP hm C~T ''MAUCTMl St.Bucfil. ;i «. J 'tlfjbt, tinjlti) Bicknall^ ^&A^ SUNNYSIDE TAR SANDS Carbn Cunty, Utah ' CirdfyiUa ; ',.0tmCrm*L SLSudt ilti.mrr.. Natinal i Fmt h**- Scale: 1 inch = - 20 miles F. gure 1

37 A'fE.>... -.,. 19 -' -"SO- i v '» R.14 E]?RrT5E fc,-t- * *1'' v&-''-! l - r> ' A ^ v» xn > "V -- ^ ~. ^ 2 ^ > r, yy v-~ v i) ^.V ~ ^^^^^.CeWCANY ttfrf ^DI NA) INDIANA) w^4:^--^- OB'S,?>.C;;.^%fe >.. faj^, - f.-f 7 V 4> T J. ^v f? l-^yy L T '** Vr r V5>: ' --i ^. ), s*'~" 15 ;UNNYS^ pmunicip^t; - i!' k v. y- :'# J # -7 1 N^I ^VT 3 ^'^r'^ ~-&4 W. A_i * 15 >. ; ' *. Sy. >v i.ir -I -3V VM, _s^ ^.JL~ ^V >2 A Ait' -v? >^ m* C^&^mj = ^ i '^L± DETAILED LOCATION MAP SUNNYSIDE TAR SANDS UTAH SCALE: Ml. Figure 2

38 CZIZ Explanatin ' Bundary f principal divisin SALT LAKE CITY i BASIN AND RANGE -H LL*; (OR GREAT BASIN) 5LK "<- " ta f UINTA BASIN SUNNYSIDE. TAR SANDSl r*<a" I i it i: K W I < [ f ^C6LORADO >>. PLATEAU -1 N ^ ^ j HENRY ^ ~" MOUNTAINS BASIN i i (PARADOli V^KAIPAROWITS if e ' "^x? * ' J ) BASIN i> S BASIN MAP OF UTAH SHOWING PRINCIPAL STRUCTURAL DIVISIONS Scale: 1 inch = ± 70 miles STRUCTURAL DIVISIONS OF UTAH Figure 3

39 A EPLANATION Outcrp f il-impregnated rck. Underlain by il-impregnated rck. Underlain by scattered,!ean ilimpregnated rck. Cretaceus utcrp with ca! seams thicker than 4 fee!. nrth Cretaceus utcrp with thm caseams Deepiy buried Cretaceus strgtc (5 mt! 00V33 «-i mine. Sunnyside Tar Sands. Tar and Cal Resurces Near Sunnyside Tar Sands frm Energy Resurces Map f Utah, Map 44. Figure 4

40 -NUTTER-SURF, a UIH. PRESTON NUTTER CORP. SURF., STATE MIN. R 14 E R 15 E JANUARY 15. t960 LAND PLAT - SUNNYSIDE TAR SANDS PROSPECT CARBON COUNTY UTAH MOV j v,ss. «OOC MOC MOO COO O IOOC ZOOO 30OO 40OC *EE" SCALE' I ImiH AMOCO - OIL & GAS 0 ^ ' LESSEE a AMOCO SURFACE & MINERALS U.S.A.O*G SUNNYSIDE MUNICIPAL WATERSHED KOL - HOT OPEN TO LEASE m- Amc Minerals Cmpany Denver Divisin SUNNTSOe TM MMDS LAND STATUS Figur* 5?»**»»

41 Keibab Ls "Ccnin" Ss = undivided White Rim end Cedar Mesa Ss f Cutler 600- B00 SAN RAFAEL SWELL Elephant Canyn Fm prw Pimt^f i~c Hnaker Trail Fm Paradx Fm? Pinkertn Trail Fm 500 E UJ ta= Redwall Ls Ouray L: yu Elbert Fm IO0-200E Dlmite "Maifidd" Limestne l-pg 1300 lh Figure 6 Ophir Fm Tinttc Quar+7ite "granite - " 200 ISO 300 Gelgic Sectin Hintze, 1972 f San Rafael Swell, 00135

42 Duchesne River Fm Uinta Fm Th? frmatins re s similar that they cnnt be separated in wet! lgs ^ * Echmmsmri < runls) Epihippvi L'imalhrrium Hyrmhyux UINTA BASIN W Y O M I N G Evacuatin Cr M Parachute Cr M Duglas Creek M prtf-de Tngue M Wasatch Fm Willw Creelt M b>*ck ik*l. mb' ISOPACH DUCHESNE UINTA FORMATIONS Wasatch (Cltn) Fm Flagstaff Ls~ Nrth Hrn Fm SALT *LAKE CITY Mesaverde Grup Mencs Shale ISOPACH MAP GREEN RIV FORM ^TIO tf-m' fntier-mwfy j-ms 'afcta-cedar Min F Mm sn Fm Curtis, Fi ijass,, ^grmet Fm?len Canyn Grup Chinle-Garta Fms Mcnfcpi Fm Weber-Park City Fms undifferentiated Miss-Penns limestnes D*vnniwn undift Cambrian unditf, "granite" 3H ESD SW (SW) O-I W«L *'d«d 'tm blck U.» P.!.«*. C«l.b PRICE ISOPACH MAP l WASATCH FORMATION (Chn-FlJgJijff-Nnh Hrn Fnu) W Y O M 1 Figure 7 Hintze, 1972 Gelgic Sectin f Uinta Basin.

43 25,7001 < - - Figure 8 Wells, 1958 Uinta Basin - Gelgic Sectin and Oil and Gas Fields

44 PRICE - SOLDIER SUMMIT AREA Mrrisr Brushy Basin Fm Blue Gate Shale Member i Ss M Tununk $h M Dakta Sandstne Cedar Mtn Shale Buclihrn Cq M Summervilie Curtis Salt Wash S' Fm Fm "28= ; CUifwucrra Green River Shale "Green River Shale thickens t 6000 fee* within 10 miles nrth f Sldier Summit Cttn Fm :-= wd*- s-" ^1 Otjracud, tit* *d Ir i.h. Entrade Ss Flagstaff Ls Cermel Frr Men- Itpi Fm Navaj Si Kayenta ftm Wingate Ss Chinle Fm [Mss Back M upper member Sinbad Ls M! ^ ^ Kaibab Ls Diamnd Creek Ss (= "Ccnin" f Utah state qel map] Oqulrrh? Fm Manning Canyn 5 hle Humbug Fm Oeseret Ls Gardisn Lt undivided.pevnian L* Cambrian Figure 9 Precambrin 350= 300- "* w - P.rt C.'v fm C*«*' "an S C*f..' tm f iovrt>aa t Ui* Gelgic Sectin Nrth Hrn Frmatin Price Ri-er Frmatin (upper member) Castfegate Ss M f Price R F Blackhawk Frmatin Star Pint Sandstne Masuk Shale Member Emery Ss M Blue Gate Sh M (upper part) Gariey Can. Ss Blue Gate Shale Memb (lwer part) Scaptritrt Hintze, 1972 f Price-Sldier Summit.

45 NATURAL LEVEES Elitl^ DELTA-FRONT SILTS AND SAMDS '. 'If) PRO-DELTA SLTY CLAYS -5S8E- OLDER SEDIMENTS Fig Schematic diagram f bar-finger sands in the Mississippi delta. (After REIBCK, 1970b, riginally mdified after FISK «al., 1954) MATURAL LCVtC SILTY SAW ULTY CLA MUSH SILTY CLAYS. 0*CAt*rc~*fc* Fig, 394 a. Characteristic features f bar-finger sands and assciated facies. (After FISK, 1961; mdified by GOULD, 1970) Figure 10 after Reineck and Singh, 1975 Diagrams f a delta cmplex illustrating relatinships f channel muth bars (bar finger sands) and assciated sheet sands

46 ' '. " ' ' " ' -, PRIMARY RIVER-MOUTH DEPOSITIONAL TYPE "A' INERTIA DOMINATED EFFLUENTS.''.' channel,' ^^ ^~V-^:,v.:-,': ". """:* -;,^:. ~**v ; '..- 'ij.vo'-i'a.- ' '',. ' ^ -." -.*. * ".. >':^^<S-W--^rV:.v :: '.'. ". :*3ggS^K^;:'!& lunte bar' -! ;..' ^je*r.:,r.-i > -[ '; < :.' : ' -' '."^rt'vi :s " ' -,''-,' ' ' ' ' -^ '.'._..-"' ';«&" crsest sands Plan view finer sands muth channel ^ - & r ^ The 'Gilbert type' prfile flat t gently ascending bar crest bar bck - -^ ^_m?bjrais»e? 55 ' *: : : ">^ " -..; '.'.. '"': -... ""..fre sets '"... '"^>-~ Figure 11,..,. r-1 " ' ;..'.'"" "* " '.'.". " ' " '"""-"'bttm sets- Lngifudmal prfile... *; '.; ::r::::;.:::;:y:r.::v}.:::::::::.".:..'..::::::. " Wright, 1977 Depsitinal Patterns f Inertia Dminated River Muth Effluents

47 Figure 12 Wright, 1977 Depsitinal Patterns f Frictin Dminated River Muth Effluents.

48 PRIMARY RIVER-MOUTH DEPOSITIONAL TYPE 'C BOUYANT EFFLUENTS subaerial levee subaqueus levee ".^- channel, ' -,- ' :--.;,'--.br crest;." b a r f ; 0 n t. ^ ^ - P ^ t a subaerial levee HII>'-'^.;vi.'«i^i»: *^*>#: subaqueus. levee. V::-.'.::^Sf#^::. :;-:.--v:^ii^i^,.- Plan view distance t bar crest = 4-6b- br crest channel bed bar back distal bar Lngitudinal prfile channel levee levee ^.mm^>± bar sands;.'gj'r carsest sands finer sands "prdelta clays- ~ ~ jilt and clay _ interbedded sands. and silts Simplified transverse stratlgrphic crss sectin Figure 13 Wright, 1977 Depsitinal Patterns f Buyant Dminated River Muth Effluents

49 Table 1 Average Values frm Drill Hles and Measured Sectins Sunnyside Tar Sands - Carbn Cunty, Utah Data Base 9 Hles 1981 Seasn 6 Hles 1980 Seasn 13 Hles AmcKaiser Tract-pre Hles AmcKaiser Tract-pre 1982 Average Values f TD 1023' 1211' 1181' 1116' TSAT 421' 501' 482' 457' MSAT 334' 353' 361' 350' DSAT 527' 550' 529' 529' BSAT 959' 1104' 1085' 1034' M ZONE 432' 554' 556" 505' % MSAT in Tgp 1.8% 5.0% 9.8% 6.6% % MSAT in % MSAT in Tgg Tgd 33.2% 65.0% 10.7% 84.3% 13.2% 77.0% 21.1% 72.3% thickness thickness thickness Tgp Tgg Tqd 116' 484' 423' 183" 325' 704' 230' 334' 617' 184' 396' 537' TD TSAT MSAT DSAT BSAT = Ttal depth = Ttal ftage all saturated sediments = Ttal ftage main saturated znes, minimum 10 feet thick and minimum 10 galstn = Depth t tp f principal tar sands (verburden) = Depth t bttm f tar sands M ZONE = Thickness f Principal Mineralized Zne (BSAT minus DSAT) Tgp Tgg Tgd = Parachute Creek Member = Garden Gulch Member = Duglas Creek Member 00143

50 Table 2A Ttal Depth and Member Data f 1981 Frm Deep Drill Hles and Measured Sectins (all data in feet) Drill Hle and Measured Sectin Encuntered Thickness Tgp Depth t Member Cntact Ttal Thickness Tgg Depth t Member Cntact Encuntered Thickness Tgd T.D. Amc N. Shell N Pan American N. MS N. MS Dry Canyc in Tgp = Parachute Creek Member Tgg = Garden Gulch Member Tgd = Duglas Creek Member T.D. = Ttal Depth 001^4

51 . in O O- cr> II II II II _^ --J 1 c+ QJ ^ CT (T> T3 r+ 3" CT O C lo J Ol t T fd r 7<r 3 fd 3 - (T> -J CD Qi -i Q. (T> 3 CD C ' 3-2 fd 3 cr fd -i -a D) -j CD 3" C r+ (D O -J r (D 7*- 3 r 3 -i en i 00 lo W M -> _ J CT> --J r r3 J _^ J t> ^-~.eo r d- cr> < r - - j - - J c T > r ' C+3 O 00 lo --J ' O -n 3 -h I r 4^ 4^ en 4^ -~j cr> r CT> 4^ r cr> 4^ t J. ua 3 Oi ' z. _. _^ 00 en CO n 4* l > O 3- r J J z [5 O lo CO cr> en en r r N O O -f» A (Tl - 1 M & O en r r r 4* 4^ f. en N 00 CO en CT> CO en <T» O r en en en CT> en 4* eo r en 4^ -vi O0 O en r3 4a> en -vi C en i > & CO m NJ w ui 4* lo -vl CT> r 4^ SI r z r C en -vi r en r r r r r r r r J M I D (» ( 1 0 U 1 * N * M * * U - ' e T» ' < j D r 4 ^ e n e n ' c r i e n c c r ' C r 4 ^ - - J 4^ 4^ en en i u r r cr> si 4^ l > t W 2 0ID r r 3 T O Q» C. - r+ t» _. c O -$ 3 fd re Q. O t O 3" 3 -< n n 7c c: 3 3 fd r+ <S> fd <> ~s ft) r> 2 r r 3 3 H r+ctrlcu r 3- -i O 3- O - r+ I O Qi tq 3 r (A O 2 O r r 3 3 -a rt- O- r+ Qi r 3" O -J r -$ 3 O) r T3 T ^».^. ^ - * OJ -J ^ ' re O. ' i r r+ in > Q> -" 3 1 O r+ > ' O r c-t- 3" CU 3 O. *7? r 3-3 Q. fd -*>2 r r r QI r+ m» r -i r Q. r c-t-.^. 3 «> T O &> r+ CU O -h»- «D CO O 1 &> - ^ r r O --J 4* en O 4^ r r CO 00 CT> V > CO 4^ O en en er> er> l > en r CO 4i 4i 00 er> en CO O l > er> 4* en O 4^ J CO lo --J i 4=» V > lo -vl 00 4* 00 OO -i en en lo lo J 4^ --J r r CO en er> < CO J en CT> CO ^ W 00 SI U1 Ol si si t c t r 4^ cr> er> en er> r > C r i r v 4^ UD cr> si r r r 4^ en 3" 3 -" O Q. 3 3 fd r+ t r t -i r.

52 Table 3 Mineralizatin Data Frm Deep Drill Hles and Measured Sectins (all data in feet) Drill Hle and Measured Sectin TSAT MSAT BSAT DSAT M ZONE Amc N. Shell N Pan American N. MS N. MS Dry Cany n TSAT MSAT BSAT DSAT = ttal ftage all saturated sediments = ttal ftage main saturated znes, minimum 10 ft. thick and minimum 10 galstn = depth t bttm f tar sands = depth t tp f principal tar sands (maximum verburden) M ZONE= thickness f principal mineralized zne (BSAT minus DSAT) 00146

53 Table 4 MSAT Thickness in Member f Green River Frmatin (all data in feet) 1980 Data Base Deep Drill Hle and Measured Sectin Tgp Tgg Tgd Ttal Amc N. Shell N. Pan American MS N. N. MS Dry Canyn

54 «$-1 P-1 j lir HM OF PSmCIPIl, *%> - V ' ' -. FMCIUK SYSTEM > '-' «RESERVOIS TD TD 1165 TD 1154 Fig. 3. Bth a steam drive and steam sak pilt test were cnducted. Fig. 4. A crss-sectin acrss the pilt area shw.' the znes used fr drive and sak peratins. TD 14.DDD Table N.5 Thurber and Wei burn, 1977 Drill Hle Data f Thermal Tar Sand Tests by Shell Oil Cmpany OCHS

55 Table 6 Data frm Signal's Hrizntal Wells Main Pit, Asphalt Mine (Reference: Bituminus Sandstne Quarry, undated) EPLANATION ROCK SHALE SiLTSTONE CZ3 SANDSTONE OIL SATURATION WM HEAVY OH GOOD TO HEAVY FAIR TO GOOD BARREN NORTH SCALE ; I feet #202 30' W f #101 T.D. 373' 0-29' gd t heavy saturated sandstne 29-56' barren red shale ' fair t gd saturated sandstne ' heavy saturated sandstne #101 Center Hle T.D. 366' 0-10' heavy saturated sandstne 10-30' gd saturated sandstne 30-96' barren red shale ' fair t gd saturated s2ndstne ' heavy il saturated sandstne *103 50' E f #101 T.D. 390* 0-35' heavy saturated sandstne " barren red shale ' fair t gd saturated sandstne ' barren shale and siltstne C' gd t heavy saturated sandstne Nte: All three f these hles are riented N32 W and are, therefre, nearly at right angles t the principal channel trends f N40 t 70 E. The data demnstrates that abrupt lateral changes exist in directins perpendicular t the channel trends. The general lcatin f these three hles can be seen n Pht 7.

56 Table 7 General Rck Prperties Assciated with Minr Envirnments f Depsitin Envirnment f Depsitin Principal Rck Types Cmmn Clr Distinguishing Characteristics FssiIs Bitumen Cntent shale and marl stne tan t It. gray thinly laminated negligible: in thin sandstnes & sme fractures shale and siltstne tan t It. gray & It. green laminated t thinly bedded, il shale, paper shale 1imi ted: stracds, plant debris, small fish, thin algal znes negligible: in thin siltstnes, sandstnes & sme fractures limestne and shale white, It. gray t It. green thin limestnes, thick shales, fssil znes, strng biturbatin imprtant: stracds, thick algal znes, fish scales negligible t mderate: lw t high in limestnes and thin sandstnes shale and 1imestne live drab, brwn, purple, green variegated and mderate: algal laminated shales, znes, stracds mderate biturbatin negligible: n sme fractures shale red and brwn rtlets, weak biturbatin si 1tstne tan t brwn micr trugh crss bedding, mderate biturbatin, sme muscvi te limited: rtlets, plant debris negligible: n sme fractures mderate: lw t mderate fine grained t very fine grained sandstne dark gray t black planar bedding, basal limestne cmmn very limited: bita trash, fish scales significant: mderate t high fine grained t very fine grained sandstne dark gray t black planar crss bedding, current ripple laminatins with muscvite laminae, IFC's with 1imestne clasts, distrted bedding very limited: stracds, algal debris significant: mderate t high fine grained t very fine grained sandstne dark gray t black trugh crss bedding, channel scur, gar-pike and lgs very limited: IFC s with si 1 tstne clasts, limited muscvi te significant: mderate t high IFC = Intrafrmatinal Cnglmerate Biturbatin = Fssil Burrws f Small Organisms 001$,

57 Table 8 Analysis f Entrapped Gas frm Amc N. 9 and N. 11 Specie Methane Ethane Prpane Isbutane n-butane Ispentane n-pentane c 2 CO Amc # Ft. values in ppb Amc # Ft NOTE: N detectable H 2 S r S0 2. Analysis by Rinehart Labratries Inc., December 10, 1980.

58 Table 9 Status f Drill Hles Drill Hle Surface Dwn Hle T.D. Amc N. 1* lcked cap n 20' casing stppage at 346' 1225" 2 3 4* 5* 6 7 8* 9 10* * * Shell N. 2 3 Signal N. 1 cement plug in casing cement plug unlcated lcked cap n 20' casing lcked cap n 20' casing cement plug lcated cement plug unlcated lcked cap n 10' casing threaded plug n 10' casing lcked cap n 10' casing threaded plug n 10' casing screw cap n 20' casing screw cap n 20' casing screw cap n 30' casing screw cap n 20' casing lcked cap n piezmeters screw cap n 20' casing screw cap n 20' casing screw cap n 20' casing screw cap n 20' casing lcked cap n piezmeters screw cap n 20' casing screw cap n 20' casing screw cap n 20' casing screw cap n 350' casing lcked cap n piezmeters n casing n casing bull plug and 8' casing fully cemented (?) pen (?) pen (?) (?) (?) pen (?) (?) pen (?) stppage at pen pen pen instruments pen pen pen pen instruments pen pen pen pen instruments (?) (?) (?) 450* 974' 1260' 1393' 840' 1192' 1232' 1115' 1285' 914' 1336' 1268' 609' 1025' 160' 1215' 1015' 282' 160' 265' 1200' 899' 136* 1110' 585' 815' 1399' 1189' 1450' NOTE: * All lcks are same with cmmn key, Special N. 1 Master Lck Key Screw caps need 2-3 ft pipe wrench fr remval

59 TABLE 10 PROPOSED PILOT MINE OUTCROP AREA - TRAVERSE DATA UPPER TAR SAND Statin 1 med angle med scale sweeping B; bit (5-6%) FG-VFG SS; 1% muse; 6 ft thick SE edge fades t zer in 20 ft ft expsed thickness; med angle med scale sweeping B; bit (5-6%) FG-VFG qtz SS. 3 planar bedded SS abut 13 ft thick; verlies 2-3 in. stmatlite zne w very ltd disturbance; planar bedding (90%) small scale lw-med angle planar B (10%); lcal IFC (3-15 in. thick) Is clasts vi ltd transprt; EOD = BAR ft thick FG-VFG bit (5-6%) qtz SS; verlies lcal strmatlite Is zne 1-2 ft expsure; planar bedding (70%) lw-med angle planar B (30%); channel directin N30-40E ft thick FG-VFG bit (5-6%) qtz SS; verlies lcal bit strmatlitic Is zne 1-2 ft thick; planar bedding (90%) lw angle med scale planar B (10%). 6 7 ft thick FG-VFG bit (5-6%) qtz SS; verlies inplace strmatlitic zne 1-2 ft expsed; planar bedding (90%) lw-med angle med scale planar B (10%). 7 7 ft thick FG-VFG bit (5-6%) qtz SS, verlies 3-4" algal strmatlitic Is zne; planar bedding and lw angle planar sweeping B. 8 9 ft thick FG-VFG bit (5-6%) qtz SS; planar bedding (90%) lw angle med scale planar B (10%); verlies Is zne-strmatlitic t bita trash; 28 vert ft t middle ss unit. 9 8 ft thick FG-VFG bit (5-6%) qtz SS; verlies 2-3 ft expsures f Is; algal strmatlite (20%) bita trash (10%) micrite (70%); planar bedding (100%) ft thick FG-VFG bit (5-6%) qt SS; verlies in place bimicrite (bit) zne 2-3 ft thick; 6" IFC with Is and sh clasts; Is zne is discntinuus; Rb fund catfish fssil in wk il shale talus slab ft thick FG-VFG bit (5-6%) qtz SS; shale slpe area; MSAT stps at 40'; distant mapping f majr tar sands fr Gelgic Maps (1" = 500 ft) within 95% cnfidence limits ft thick FG-VFG bit (5-6%) qtz SS; 6" micrite t bimicrite w bita trash; planar bedding and lw angle sweeping planar B

60 Table 10 (cntinued) Statin 13 6 ft thick FG-VFG bit (5-6%) qtz SS; 6" micrite t bimicrite w bita trash; planar beddina (70%) lw med angle sweeping planar B (30%) ft thick FG-VFG bit (5-6%) qtz SS; 10 ft beynd is a 2 ft thick bit micrite zne with 6.5 ft thick tar sand n tp ft thick, FG-VFG bit (5-6%) qtz SS; 3-4 ft thick bit micritebimicrite zne belw; planar bedding (80%) lw-med angle med scale planar B (20%); middle tar sand unit 27 ft vertically belw. Nte: lateral ' and vertical ' cntinuity n 1000 ft grid fr re reserves prbably has crrelatin and reliability with 80-85% cnfidence limits; thus 200 ft hrizntal slices and 1000 ft vertical sectins in gd shape. MIDDLE TAR SAND LOWER TAR SAND ft thick FG-VFG bit (5-6%) qtz SS; base prly expsed feet frm base f middle tar sand t tp f lwer tar sand. 18 tar sand 50 ft thick; prminent and strng distrted bedding in lwer prtin = muth bar; VFG-FG bit qtz SS; planar bedding n tp; depsitin in muth bar episdal. 19 prly expsed; 15 ft thick; largely cvered by talus in small gully. 20 apprx. 50 ft thick muth bar; VFG-FG bit SS (6-7 wt % bit); preferred directin f palecurrent by Rb's directin = N40E; highly distrted bedding (50%) med angle med scale planar crss sets (50%). 21 apprx. 50 ft thick muth bar; VFG-FG bit SS (6-7 wt % bit); basal ft distrted prtin; upper ft med angle med scale planar B sets ft expsures; tp: ft thick w planar crss sets; lwer prtin: distrted bedding and lcal limited Is IFC's (1-6" thick); Is clasts as bnes, algal strmatlites and micrite. 23 apprx. 50 ft thick muth bar; prly expsed in talus sht; with this type f cntinuity 200 ft slices and 1000 ft sectins = n prblems in crrelatin

61 Table 10 (cntinued) Statin ft thick muth bar; expsures t SE are spruce cvered but laterally cntinuus; bit cntent 6-7 wt%; tp 15 ft planar sets; lwer 31 ft distrted bedding; FG-VFG big qtz SS; prbable calescing muth bars, thus sheet sand (bar) and muth bar cmbinatins are transitinal t each ther; this is prbably cntinuus in subsurface t 1980 favrite utcrp (1980 Pht N. 6); pssibly this muth bar is als a regressive-transgressive beach bar system; tp f lwer tar sand t bttm f middle tar sand = 52 vert feet ft expsed thickness, prbably 20 ft thick; planar bedding; bit SS = bar; FG-VFG bit qtz SS (6 wt% bitumen); at base f middle tar sand unit vertical feet frm tp f middle tar sand t base f upper tar sand; apprx. by statin n. 8; qd traverse; 200 ft slices and 1000 ft S are OK, cnfidence limits; 1500 ft S = 75-80% cnfidence. Nte: 1) 100 ft distance between traverse statins measured by tape. med B bit FG VFG SS QTZ LS wk IFC muse E0D MSAT = = (5-6%)= = = = = = = = = = = medium crss bedded bituminus (5-6 weight % cntent) fine grained very fine grained sandstne quartz 1imestne weak intrafrmatinal cnglmerate muscvite envirnment f depsitin main saturated zne 00155

62 00156

63 PHOTO 1 Tar Seeps: Suth facing expsure f tar seeps frm bituminusrich gray sandstnes. The white xidized surface n the bituminus sandstne represents a thin veneer abut 1 mm thick. Belw the hammer light brwn t white nnimpregnated siltstne exists. Phtgraph at basal prtin f small channel muth bar depsit within Garden Gulch Member f Green River Frmatin. Pht lcatin near tp f Measured Sectin N. 9; and shwn n Gelgic Map Nrth Half, scale 1" = 500 feet; and within NW4, Sectin 33, T.13S., R.14E

64 VL-Ai W- ;>-v^ Ux~S^f T*T3fc *$*%&*. SSL

65 VUJG ^Ltrf) L C. C^O t" T-^V fw l^> 5 ^ ^' <"-

66 ^2

67 m ;{ "' ^ssfe M$t. f -V.**-S '4^B> v* 3^..-.-*--:'' : #r - ''-*#?'. **' js* 4 *-* 'f'^* *3» 5 " ',. '"-"?] >f j *';& 'H y(?* * 'W-& *, & 1 jr--.lt;. M 00161

68 PHOTO 3 Asphalt Mine and Delta Cmplex, lking nrthwest abut 4,000 feet. Tp crest f Bruin Pint rad is at right skyline. Rad belw Asphalt Mine frms lng switchback t left then dubles back alng skyline ridge t Bruin Pint. Just abve Nrth Pit, Asphalt Mine the newly dzed rad with cmpressr n it has a dip f fur-five degrees and parallels the reginal dip f the beds. Abve Asphalt Mine numerus gray cliffs f bituminus sandstne frm sheet-like depsits within the delta cmplex. On right prtin f pht the well-expsed sunlit cliff is a 265-ft thick channel depsit f bituminus sandstne that exists alng Measured Sectin N. 1. Pht taken frm Measured Sectin 3 and lcated n Reginal Map (scale 1" = 2,000 feet) in Nw4, Sectin 10, T.14S., R.14E

69

70 PHOTO 4 Prpsed Pilt Mine Outcrp Area, lking sutheast abut 500 feet t upper left and abut 1,800 feet t upper right. Upper gray bituminus sandstne unit 3-11 feet thick with 1-2 ft white limestne unit beneath. Middle tar sand unit feet thick with 1-3 ft white limestne unit beneath. Prminent lwer tar sand unit 55 feet thick with upper planar crss set unit feet thick and lwer distrted bedding unit feet thick. depsits. Upper tw tar sands interpreted t be beach bar Prminent lwer tar sand unit interpreted t be channel muth bar at base capped with beach bar depsit. Pht is highlighted by the lwer, middle and upper tar sands and illustrates three minr transgressive-regressive cycles. Nte gray-green shales between middle and lwer tan sand units. Parachute Creek-Garden Gulch cntact at base f upper tar sand. Traverse statin 15 in upper left near edge f large green tree in left fregrund. Traverse statins 17 and 18 behind large green tree in left fregrund. See Table 10 fr specific traverse data and Gelgic Map Suth Half fr lcatin f measured traverse statins. Fr pht lcatin see NW4, Sectin 4, T.14S., R.14E. n Reginal Map (scale 1" 2000 feet) and Gelgic Map Suth Half (scale 1" = 500 feet). ti&lil

71 ' I- ^ # * *%&"' '^fck"^ '%..-«# r i*v*&sj ^f :^-MlM^

72 PHOTO 5 Tar Sands f Channel Depsit in Duglas Creek Member lking nrthwest abut 400 feet at nrthwest wall f nrth pit, Asphalt Mine. Nte gradual ft deep channel scur int red shales abve white pickup truck. Main tar sand cliff face capped by red shales f marsh envirnment. Beneath shadwed caves in tar sand cliff was site f huff and puff tests perfrmed by Signal Oil and Gas Cmpany shwn in Table 6. Current peratins by Great Natinal Crpratin. between nrth pit and suth pit. Pht taken at vantage pint Fr pht lcatin see Gelgic Map Suth Half (scale 1" = 500 feet) and SW4, Sectin 4, T.14S., R.14E.. C016R

73 S fw i r>s( ^ 7 AUA^ ->

74 PHOTO 6 Tar Sands f Channel Muth Bar Depsit in Duglas Creek Member lking nrtheast within lwer prtin f Measured Sectin N. 3. Tar sand cliff face 60 feet high. Abve Rb Ry's head is small lenticular limestne zne with small distrted bedding abve and planar crss bedding t upper left. Tar sand unit is capped by planar bedding. This pht shws sme f the cmplexities f sedimentary structures and lithlgy that exist with channel muth bar depsits. Fr pht lcatin see Gelgic Map Suth Half (scale 1" = 500 feet) and NW4, Sectin 10, T.14S., R.14E.

75 r. '-*. «^W. * re^t-** i^a*i 8**- >' 5*^?*». *.» *«*L J -ss»;-^s5>" ^SiSii 00169

76 PHOTO 7 Tar Sands f Beach Bar Depsit within Parachute Creek Member. White rck at base is mi critic limestne. Nte dminant planar bedding in bituminus sandstne and presence f sweeping planar crss bedding. Pht lcatin is near tp f Measured Sectin 3 as nted n Gelgic Map Suth Half (scale 1" = 500 feet) and SW4, Sectin 11, T.14S., R.14E

77 :- ^ *.' "? vi****. -*-*-i&y^n HSSSSg^ w&fem&m.?*3: flhg^?*«r*5..'csisaes: 'W&0T- TStSwrA^f

78 PHOTO 8 Tar Sands in Drill Cre Frm Duglas Creek Member, Amc N. 12, feet Envirnment f Depsitin Ftage Descriptin Ftage Bitumen Wt % GalTn Bay laminated gray shale interbedded limestne, sandstne siltstne and shale Bar massive mttled gray biturbated bituminus siltstne Channel Muth fine grained bituminus sandstne IFC zne - limestne clasts fine grained bituminus sandstne

79 1 rottti 00173

80 GEOLOGIC SUriKAP.Y REPORT OF THE 1981 EPLORATION PROCRAT SUNNYSIDE TAR SANDS PROJECT CARBON COUNTY, UTAH Vlurae I

81 WILLIAM S. CALKIN, D. Sc. CONSULTING GEOLOGIST VILLAGE CIRCLE GOLDEN, COLORADO PHONE (303) February 24, 1982 Mr. M.J. Fraser & Mr. G.E. Jacksn Amc Minerals Cmpany 7000 Suth Ysemite Englewd, Clrad Dear Mr. Fraser and Mr. Jacksn: This tw vlume reprt n the Sunnyside Tar Sands prject is a summary f the field and gelgic wrk cmpleted fr the 1981 explratin prgram. It als includes related aspects f the 1980 and 1978 prgrams. The summary and cnclusins as well as recmmendatins ccur at the beginning f the reprt. The detailed gelgical aspects ccur near the end f the reprt. The figures, tables, and phtgraphs are in numerical rder in the Appendix at the end f the reprt. The varius maps are in the back pckets f Vlume I. The numerus clumnar sectins are in the pckets f Vlume II. The supprt and cperatin f Amc Minerals is gratefully acknwledged. The utcme f this reprt is the result f cmbined effrts by numerus peple f Amc's staff. I wish t thank Rb Ry fr his gd wrk as a gelgy assistant and ur many helpful discussins. I als wish t thank Stan Lei and fr his gd wrk in crdinating and cmpleting all the drafting. If there are any questins regarding the gelgical aspects f the Sunnyside Tar Sands prject that need clarificatin, please cntact me. Sincerely, Wm. S. Calkin laj 0009s

82 f -*<- -> -... r._v _,,:>-- - ;. - "> «"^ ' > > (,' ' J. R1TE"!R'I4T - J i V,-i > Syrn-HQ RI4E RI5E EPLANATION 1! i-. I V; I "V. O I 12 ' t --'>. i ^«1> It y! i- ' ' ' Mvvl M i»l fc'^< 16 MT. FUELS MT. BARTLES..-M.. s p, -* >- PHILIPS T * i < Af'N*xs';T-'fy i 0',S;.n? A. Tgr Tnh GREEN RIVER FORMATION LACUSTRINE SHALES AND SILTSTONES WITH TAN NONBITUMINOUS TO GRAY BITUMINOUS DELTAIC AND SHORE SANDSTONES. WASATCH FORMATION FLUVIAL REDBEDS WITH NONBITUMINOUS CHANNEL SANDSTONES. OUTCROPS COMMONLY HEMATITIC COLOR. NORTH HORN FORMATION FLUVIAL SANDSTONES AND MUDSTONES. SANDSTONE OUTCROPS GRAY TO WITH DISTINCT BLACK GRAINS. PRICE RIVER FORMATION FLUVIAL AND MARINE INTERBEDDED SANDSTONES AND MUDSTONES. SANDSTONE OUTCROPS GRAY, DARK GRAY WITH MnO STAINING. " VJ i STRIKE AND DIP OF BEDDING PLANE,-«* DRY CANYON.<» GENERALIZED GEOLOGIC CONTACT ^T V TEACO GOV'T. WOLF B-L M<1 rct-jrit STRIKE AND DIP OF FAULT ZONE, LOCATED NEAR MS NO AMOCO DRILL HOLE AND NUMBER V > f «W*Q GULF NO. I ''PRESTON- gutter OTHER DRILL HOLES, COMPANY 8 NUMBER 96' f- '! I I f ' -) -, TE ACO<GOV.'T. ; WQL'F B -2 w--n { ARCO SUNNYSIDE NO. 5 V -. > <- > TOTAL DEPTH IN FEET TOTAL FOOTAGE ALL SATURATED SEDIMENTS TOTAL FOOTAGE MAIN SATURATED ZONES (MINIMUM 10 FEET THICK) V < J. r*e' DEPTH TO TOP OF PRINCIPAL SATURATED BOTTOM OF SATURATED SEDIMENTS xv -TJ4& Sight ' ' " ) l 1^ V,! *** ^ _4,MWV* PA 9* V f Yl y ; " - wc.-'>» 12 " ] 24, _.. tf ^i J i <V ->A?-V Spnng -> <Cr3r>* v - firaaky faf.ilr! y ' - '11 J in*'' ".i, ->--- N, 0 )w -i. sv^- " 38PBF?' rsfn'b.ii 27 **S NO. 10 BiirnTraAt'* PHILIPS ^ pj>nll Hle.u;..J ^_v. r- 1 i ««^ -fc 'TEACO GOVvTvJWOLF A-I L--i AMERICAN NUTTER COR^CH-I ^ * ) I ".- { '* -.>«--Y- - <«->.' ^ r ) i- V-- ' ' T-Hu-rU.0^ A I i.v- N^ PAN AMERICAN -NUTTERORP.'CH-^ r-per^c " ' 17 ^ J -^' ^" _ SHELL NO. 5 V-" J&.<<s Spi-tytp > T 13 S T 14 S _ -i<^n >IJ; k V - ^-J "^ MS NO. I PHOTO DRILL HOLE OWNER 8 NO. GULF NO. 1 - PRESTON-NUTTER PAN AMERICAN NUTTER CORP 1 2 ARCO SUNNYSIDE MT FUELS OUTLINE OF SUNNYSIDE DELTA COMPLE AS DEFINED BY TAR SANDS WITH MSAT'S TOTALING AT LEAST 100 FEET MEASURED SECTION LOCATION AND NUMBER PHOTO NUMBER, LOCATION, AND DIRECTION OF VIEW DRILL HOLE INFORMATION MT. BARTLE'S SHELL TEACO GOV'T. WOLF A-l B-l B-2 AMOCO II MEASURED SECTIONS II MS DRY CANYON MS RANGE CREEK I MS RANGE CREEK IT TD 2684' 2200' 2102' 650' (?) 400'(?) 600' (?) 250'(?) 9650' 806' 1399' 1189' 205' 1180' 980' 730' 822' 450' 1225' 974' 1260' 1393' 840' 1192' 1232' 1115' 1285' 914' 1336' 1268' 609' 1077' 160' 1215' 1015' 282' 160' 265' 1200' 899' 136' m' 585' 815' VERT. HT 1500' 1344' 952' 1405' 886' 350' 618' 1075' 1052' 914' 525' 1400'' 1069' 1986' TSAT 43' 80' 105' 290' 109' 236' 144' 50' 225' 677' 345' 48' 168' 94' 75' 66' 57' 626' 350' 489' 459' 270' 584' 547' 486' 478' 436' 523' 531' 285' 383' 604' 417' 48l' 356' 400' 330' 770' 444' 419' 732' 330' 109' 197' 185' 557' 156' 76' 124' 88' 50' ~ MSAT 29' 47' 188' 61' 183' 128' 166' 518' 173' 38' 41' 20' 22' 35' 17' 424' 290' 413' 307' 235' 451' 493' 341' 336' 345' 362' 424' 230' 290' 478' 330' 385' 296' 305' 265' 685' 400' 307' 650' 265' 104' 147' 125' 470' 93' 56' 79' 50' 40' DSAT 345' 455' 136' 184' 43' 2' 321' 720' 485' 109' 488' 500' 268' 539' 333' 535' 435' 410' 545' 570' 515' 450' 460' 680' 405' 675' 464' 314' 540' 596' 668' 572' 565' 630' ' 420' 385' 380' 135' 333' 170' ' 435' 802' 465' BSAT 454' 939' 596' 378' 545' 200' 650' 1298' 1027' 154' 974' 783' 690' 820' 350' 1182' 929' 1160' 1159' 744' 1149' 1190' 1046' 1065' 877' 1292' 1206' 558' 922' 1200' 955' 1115' 894' 983' 801' 1188' 1005' 724' 1284' 659' 242' 535' 780' 838' 690' 363' 850' ' V. ; ' I ^""5 -' r?ymi;»;f ( > A! r?9 DATA CALKIN a ROY, 1981 CALKIN 8 KNIGHT, 1980 WILSON 8 ZIEMBA, 1977 V NORTH FEET... _i..*.. _.J-4--V-v^ V-H-4-,ftVi J ' V CONTOUR INTERAL 40 FEET 36 -N V AMOCO MINERALS COMPANY USA Minerals Divisin Denver, Clrad r T RANGE CREEK I T"l^ S : SUNNYSIDE TAR SANDS Sunnvside itsj" '" CARBON COUNTY, UTAH». :. '..» i x, *«-- * ^' f......v^ > r y. w>. i A.East" Carbn.'City [)f:v^ ' T.:,.~^y- --^ ' jfu4e[ "^ A'M«tK-,.ne ' '.ers U -. < > ) 1 y; K --< MAP NO. REGIONAL MAP SCALE: DRAWN BY GEOLOGY BY DATE = 2000 SJF W.S. CALKIN 1882

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84 12 St Mary's Amc Tract I 2 Crsby Crp LONGITUDINAL SECTION 17,600 NW Amc Tract Mn Pwer Oil a Gas CO 9,800-9,600'- 9,000- GREEN RIVER FORMATION Asphlt Mine, Nrr 0 ' Parachute Creek Member Garden Gulch Member Duglas Creek Member Pilt Mint Outcrp Arta AMOCO NO. 3 Prjected 40' NW T.D. 1260' SHELL NO. 2 T.D. 1399' AMOCO NO. 17 Prjected 220'SE T.D. 1015' COMBINED DATA AMOCO NO. 2 AMOCO NO. 17 Field Gelgy I- 10,000-9,800' -9,600' -9,200-9,000 Parachute Creek Member Garden Gulch Member GREEN } RIVER FORMATION 8,800' ' *-**!»S!?-- t s**-;?:? - 8,800 Duglas Creek Member LOCATION MAP 1 SJ. 0!000' ^ ^ AMOCO NO. VTi&S ^CSHELL NO. 2 >^AMOC0 NO. 3 LONGITUDINAL SECTION 17,600 NW RI4E TI3S TI4S ENVIRONMENT OF DEPOSITION E] PRODELTA L3 DELTA FRONT CD SHOREFACE EB BITUMINOUS BEACH BAR OR DISTAL BAR BOS BITUMINOUS CHANNEL MOUTH BAR EaS BITUMINOUS CHANNEL LEVEE OR SPLAY ED MARSH OR BAY NONBITUMINOUS SANDSTONE NOTE: BITUMINOUS ZONES ARE A MINIMUM OF 10 THICK AND CONTAIN AND AT LEAST logal.ton BOO 1000 FEET.< : AMOCO MINttAl»,j»MrANY USA Mwwf«U 0frf$w> D*nv*r. CelrJB SUNNYSIDE TAljSANDS CAIWOM COUMTY, #t«i< LONGITUDINAL JjfCTION 17,600 W l" a' M.». <rc.m«i«i-ii- ^4

85 -. :v.v;sv.v.v.v.iy,."... EYER»*^w"P jjlgglmeyer _i I. : : : : ] iiyivv.: a *" * M.»» - - _ - 21 «*.... ««.. ««... ««. «. > 1». a *.. - *. ' *... * * *. ] » * *.... «. ««* * **r " -*>>>>.v.^v.'"'"»^ vi *"r.v.v.v.v.'* *.". I v B^i _* ^x^x^xxxxxxxv:;!.,....'..'." "."..."..".-.-.i in i), 1.vss:xsx*'v:v:vvv :-:-: : :-:-: : : : : : x : :: : : : :-: : : : :-: : : : :-:-: : :j i.. vvvvi FEE L? H «c 2a : : : h2-i-8a i... :: : >» SjB.... a... GRYNMR(^- xj:j:jx^^ *... WOLF J.PAGANO MEY v!vvv f* * * *^» ^V V^V..... *. M» I. I : x^1s2:;.v;w^ L-ii tuui***********' 'llur**:':^* ** AMQCO O&G U EVELYN R. JOECKEL * * * * *_ * ::AWtf br : fil^iiiiii.... «. ^ ^% *. *.^L*mw ****** inn J'W,itt*iLtM*WiUUUt'u ~ m m M M. * * (^ «J xx^xvx --'-'- " STATE O&Cj ML TEACO O&G U GAS PROD. ENTER U.S. SURF. & MIN. lunited STATES 31 SURFACED MINERALS NUTTER-SURF. & MIN. PRESTON NUTTER CORP.-SURF. STATE MIIN. T.N.JENSEN 18 S *. t CC -; JUI> O 5 Z l * CO u. hhgtt 1«w c CC 3 SURF-KAISER O&G U MONO POWER U.S. SURF. MIN, tx:vxx'x-l >.*,*.*.V. * J AMOCO - OIL & GAS LESSEE AMOCO SURFACE & MINERALS U.S.A. O&G SUNNYSIDE MUNICIPAL WATERSHED ML STATE 08iG TEACO R 14 E R 15 E N(0L - NOT OPEN TO LEASE JANUARY LANID PLAT - SUNNYSIDE TAR SANDS PROSPECT CARBON COUNTY UTAH SCALE: I"* 2000' NOV. 25, I FEET -M- REVISIONS Amc Minerals Cmpany Denver Divisin SUNNYSIDE TAR SANDS CARBON COUNTY, UTAH LAND STATUS 00 17s 10 MAP NO. SCALE: " = 2000' DRAWN L.H. BY GEOLOGY BY: DATE: l2-22-'8c

86 GEOLOGIC SECTION BASELINE Stcltn 33 Sectin 4 Vz St. Mary's Vz Crsby Amc Tract Amc Tract Gibbs Heirs Gibbs Heirs Amc Tract Amc Tract Gibbs Heirs Gibbs Heirs Sunnyside Municipal Watershed NW 16,000 NW Parachute Creek Member ' - SIGNAL SUNNYSIDE NO. I PROJECTED 530' N TO. 1450' AMOCO NO. 12 PROJECTED 150' SW TO 1268' AMOCO NO. I PROJECTED 560' SW T ' MT» FROM SECTION 17,600 NW AMOCO NO II PROJECTED 90' NE T. D 1536' AMOCO NO. 8 PROJECTED 730' SW TD. IMS' I 10,000' GREEN RIVER FORMATION Garden Gulch Member Duglas Creek Member 9400' -"i^^^mm GREEN ) RIVER FORMATION

87 GEOLOGIC SECTION 3800 NE Amc Oil 8k Gas Lease Mn Pwer Oil a Gas Lease Amc Tract Secttn 3 Sectin 2 Sectin 2 Sectin I Amc Sunnyside Tract Municipal Watershed COMBINED DATA AMOCO NO FIELD GEOLOGY GREEN RIVER FORMATION 9600' Parachute Creek Member Garden Gulch Member GREEN } RIVER FORMATION 8600 Duglas Creek Member a PROOELTA CO DELTA FRONT CD SHOREFACE BITUMINOUS BEACH BAR OR DISTAL BAR ma BITUMINOUS CHANNEL MOUTH BAR OB BITUMINOUS CHANNEL LEVEE OR SPLAY G3 MARSH OR BAY CD NONBITUMINOUS SANDSTONE NOTE BITUMINOUS ZONES ARE A MINIMUM OF 10 FEET AMOCO MINERALS COMPANY USA Mineral* Divittn Dnvr. Clrad SUNNYSIDE TAR SANDS CAHtON COUNTT, UTAH RI4E AND CONTAIN AT LEAST 10 5ALS'T0N GEOLOGIC SECTION 3800 NE ^

88 LONGITUDINAL SECTION 12,000 NW Gibbs Heirs Sac lin 10 Gibbs Heirs S«t«r», Sunnyside Municipal Watershed Sectin 2 Amc Tract Amc Tract CM 1000 NE 2000 NE 10,000' 9800' Parachute Creek Member AMOCO NO. 24 PROJECTED ISO' NW TO 1110' r 10,000' 9400' 9200' H GREEN RIVER FORMATION 9600 Parachute Creek Member 9200' GREEN > RIVER FORMATION 9000' 8800' 88' Garden Gulch Member L LOCATION MAP ;«- AMOC ) NQipAMOcO NO 13 AMOCO NO 24^ MS. NO. 2 LONGITUDINAL SECTION 12,000 NW ENVIRONMENT OF DEPOSITION E3 PRODELTA ES2 DELTA FRONT C3 SHOREFACE E53 BITUMINOUS BEACH BAR OR DISTAL BAR ffl BITUMINOUS CHANNEL MOUTH BAR EH BITUMINOUS CHANNEL LEVEE OR SPLAY C3 MARSH OR BAY CZl NONBITUMINOUS SANDSTONE NOTE BITUMINOUS ZONES ANC A MINIMUM OF 10 FEET THICK AND CONTAIN AT LEAST 10 GAL TON. 8600' Duglas Creek Member AMOCO MINERALS COMPANY USA Mineral* Divitien D*nw*r. Clrad SUNNYSIDE TAR SANDS CAMON COUNTY, UTAH LONGITUDINAL SECTION 12,000 NW MAP NO [SCA.i RI4E

89 7 ' " *. ' *. l VTgg Mmm-': >**» W- & ;_-*V»-* <%W$**m*M "V v.. I y cvi Ul RS y w ^M34 :x < t.' ^ *.*-». 567^ JAT: - 3 A T L _. -'V ; ^ $ # -w ', BS TIT ' y J i vi J964f, ^ i ; W&YH.A wasr - M vv 1 I ' A L0 H&J >j?9tf ^>?x 8 «S St ~i, ^K =1 SYMEYRICAL OSCILLATIOf PARALLEL STRIDE W&5 3K.JW E M MARKS -- ~M*k r*r.*, -.W.. ~. *».. -. *v*». Ui t, 0?5L LU.. «;-.- Ul * j * UJ RI4E RI5E 82, i '.& &?' $Z y r ^ ^ ;y&?v. ' ' '' - ^ ^ '. ) i 'V V 7~vi:. _x y, 77 7 > I,w 7m V.. i :% L SV7i *M ' l ) v Tg 7i ) t! ffm m? :*< 80,000 N g> N V -; i 13 S x 14 SC '.' s j T ^^0^^.-~ A 3$ HP ^s **^es^s I^^SiSsI^ s 75,000* N 'J'..^s & ^ * ^,.< s ' M. GREAT NATIONAL m ^?- & h 7J Tgd vi&te <t <&y^ >? Z2,5 N :^^y:.-a^xx::v v#t, ; GREAT NATIONAL O ' V. ^ c r -y^r^ y ^ V-* Z? J... f***nifir*r4j>i.&" %, W.4*5* ft' i BQO H**, 5*1 MS 14' Mi ^s. V; i i ' t ' I 1.7 '?v b? A HQ.-J *! W.!VT-^^-, : 5^ Wi itm -:*.,. SM All v.. ^ Tgd V' ( ^i mtmtte I f c ^ p * * * * ^ '." sf"j--- : '> V. > ^ is ^s ^ ma V «^ ^ d ^ :«S>A y ff^qe 7 r- ; fc ««<j?*«* ^ i ^Ki V ^ %?;!?' *».*- H**Vt. V V V lii ^ &m i V g ^ < *» * ^$& (l«l ^ : V.V: SMB «?A"' STIONAU ;usc ' - x RADIO, itower fcv im»"*_: 'i *', ^^>Si * i. 7 ^ Kl A MSATJJ9_ DSA1 BSAT w * y I**.* SFT^s far" ^* fjto^vf.^i m^ & & * : * ; & : ^AfilS42; : gp il g» : y^t-^d «^ ^ ^ > ; 7 ^ ^ r. ^ ^.^ ^ ^ T^ J t ^ 1)VI! Q' ^ - ^ "fc ^, ^v-e^i. -»" '^ &-. yy r^-7 -'* ' s PH 1.^.J ^ : ibsui^ * i V -n '$imk S S S?) M Wi ^ II 4?* ii $ ^ 5»3 ^ Tgc ~*" % *~"~-'7, ^ '#, '.«tjj--»v- ; -«**"",.^ xf J.' > 1 s ^ : ; i.v, $JL : " ^. <AM0C0 N 12 ^ T.D. 1268' i ^ TSAT 531; UMSAT 404 DSAT 46^ fa-14 BSAT m 1206' <= imoco N I T.D. I215> TSAT ^60C f a --' ' 7; ^- 'UfiSfj y.irjft^i.wv, 1 &", A-23' «.3VJ f r. AMOCO N 28 ^^ T.T.D. 20* s SP ^;,*V5?* ' [MOCO N IS T.D. I60 r 596* -^.^TTTTMOCO NO VT " " ^ I T.T.D. 41'.!,, -. (^TAMOCO N 14 ^ AMOCO N'i ' ^ W T. D...HOT ^^ -SHELL N 2 A-19 t ^..- "^TSAT 383' vv TD l$99' RADIO^ '^ --^"' MSAr 355' TSAT DSAT 540 % MSAT BSAT 922' K A rn 'v - DSAT 7 20>.. 36 BSAT V 29e^ S ' Nl S»'2* Mm I -Z;") K G I ^ 3tt;?^ ' >'-V.'«-4: m mi w t. % : 7; ^"in" i v V AMOCO T.D: JABO' TSAT 489* ^ MJSAT 413', ^> ^n vy^: fki ri*-->c_-.,. RADIO fl^towe^ :-;.-V *3&* M>m C' AMOCQ^N, JL AH6TD 1336 TSAT ' S. ^ "^ ^ l ><2>- ^^x^- : Mli ft ( ^ '^7l^. N $ «% K'ifji ^ (It ;^ & ^ 7 '7' -*& FlMgtp*..-- ^ IMS^m J S p^ ^yj - ^'VTSAt. -^*^4 MSAT' 367' t (JfTad.^tDSAT-'SSS-^ :.--rlwi^wfej;-! UryYf} J V'..1.. :y.'.,- ^v- V v k >""; ^? :«!> IP ^... MSAT 235 J-^L;,<^>5 : >^i -*,r-.- t x r.--- t! 7 GREA [NATION A 1! W «W-"'J WS5 J5& ESs'»4*.t t?*%> " ^ y A-2I y lt+fc r*tjf i.i L2V*'- > * = j^bsat U60!-.ji' >J^"^ T^: ii5*-- JSAT 4I7 < J2 285 ^ -DSAT- $ BSAT 955^ A ^ C i ^ r -Z^AtAOCp N 20 T.D. 265' ^ ^ AM^CO NO 2 AWOCO N 19 4 ^ D. 160' mz^ AMOCO N I T.D. 1225* TSAT 626 MSAT 424 DSAT 535 BSAT ^, ;> ' :cp. x^ ^ ^^: x s ^ SSIW -^,- -7 y - y.k v t rt'fi i ^ a 800 v d ^ TO 934' ' ^ TSAT 350 l?5 AMOCO N ^ V-, TD 1393' > y^ It TSAT 459 y^ll S *^AT 307 ' > ^ E[SAT-&45 Bt 59'. ftlx; 1 x.' 7'. ^ ^ w AMOCO N0.7 IK A-IT >vtd 1232 f TSAT-547 ^ MSAT 493 D^AT l -450 t^ BSAT 1190' VV M.^Sc^ a m ) i ^. * J AMOCO N06 TD 1192; V, VSAT 584 ) MSAT 451' > DSAT 515" BSAT 1148* ^ ^. xx^ 91 Mi w-t. S^J! npkc?**^' - ~»*** ' I i < It ' If % "^^VV ;?.-<* n f -... J K! i A, j. '4000 gpd v v x Jgp AMOCO N 25 ^ ^ :, * SHELL N0.3 T.T.D. 585' C^ N,> -' TD , DUE E: A= TSAT345 A AMOCO N 2*6, MSAT I7 3 H^T.D. 815', -* g A J 1 8 AJ BSAT l V A T ^ UD AMOCO N 21 TvJ^D. 1200* TSAT 481* MSAT 375' DSAT 572' BSAT fll5' A^OC%l5 8 T.D.uvsV'r TSA^^ae;, MSAT 341 D$fAT 460 BfSAT I046'( *i DSACJ&8' A BSAt^' v AMOCO N 5 x, v TD 840 >. 6 OIL SHA TSAT 270, _ DSAT 570 ^v K BSAT 744 ^ v» V AMOCO N 9 ^ O TD 1285' O) I ^T TSAT 478',' j ' *. <5 * V J *~^-"., I $?,* r't? r ;, «.s 1! P H ILLIPS ^ s LIMITS OF C0 2 GAS ZONE AT DEPTH " R>VVJ AMOCO NV 22 N^ T.D. 89,9.-, TSAT 356 MSAT 307, 307' I I jt l MSAT 336' 7 ^, < f 4 "SAT j i f- V - VI ^AT NATI0NAL G k AMOCO N T.Dal'HO ' TSAT400^, MSAT 332^. DSAT~6-3g^ BSAT ic ; ^t> v j M TJ). 914' ' TSAT-436" MSAT 345* DSAT 405 wn V^! AM&CO N lb^ ^ 7^ Av,^ 1 ^>^x,^va v. f -BL. < * ^ T 7 I A WATER Hki 1 "' rhsk J ) '. r L ^**m*s E ZONE STAN D RD V 011 CO M PA N IN DI ANAf TAR^ SANDS PROPERTY - SOOTH SPRING AREA yzv I2,00a'gpd LM LCCATIO^ y" _- y^tf^zzt ^ - >.. x- - ^--"'">^7.- -x"' Vx v V... ^ *^> ^ x s^-: 9.' AMOCO N 13 T.D. ^09 TSAT 285' MSAT 216V -^ OS AT 314'7^ BSAT 558'. - ^. ^C;'-'xN^' 5; *~^-^"- :; -' '. ^~-*^ Tgp Tgg -p!??^kt ' v. ^ ; -y-"".-*^zj -t -"' -r..;* V - ^ ' * - *» * j, ^» < ^^ 7> ^^?^'g^ij?^y''-"-^^ " ^ v 1. WJL^S F7 ^ 7^v w. J ;i»h i 1.[1, i. ^.;^ 7vi l j > I j if i ^1 'I PM I ' v s. ' ' I vn x> MuSi-S?.N. AT-14 J^r-^J V,v S ss Y ;N y.1 y '.In c - i y TGR PAN AMERICAN- NUTTER CORP. CH-I T.D I SAT 80 MSAT 47' DSAT 455* BSAT 939' «tt I11 if?tgg? Tgp : TGR T-15 A 82,500 fi ^ 80,000 N N _75,000_^g 72,500 N V TGR 'Jm 1 Tgtf Tgd EPLANATION GREEN RIVER FORMATION LACUSTRINE AND DELTA DEPOSITS. SHALES, SILTSTONES, LIMESTONES AND SANDSTONES. GREY BITUMINOUS SANDSTONES IN UPPER PORTION. TAN NONBITUMINOUS SANDSTONES IN LOWER PORTION. PARACHUTE CREEK MEMBER LAKE FACIES-LAMINATED L! HT QREY AND TAN SHALES WITH LOCAL OIL SHALE. LIMITED TAR SANDS LARGELY IN BEACH BAR DEPOSITS. GARDEN GULCH MEMBER LAKE SHORE FACIES-THINLY BEDDED LIGHT GREEN SHALES, SILTSTONES AND SAND STONES WITH CHARACTERISTIC OSTRACODAL AND ALGAL LIMESTONES. BLACK FISH SCALES A DISTINGUISHING FEA TURE. SOME TAR SANDS LARGELY IN BEACH BAR AND CHANNEL MOOTH BAR DEPOSITS. DOUGLAS CREEK MEMBER DELTA FACIES- MAJOR TAR SANDS WITH INTERVENING RED SHALES. TAR SANDS LARGELY IN MAJOR CHANNEL AND CHANNEL MOUTH BAR DEPOSITS. WASATCH FORMATION CONTINENTAL DEPOSITS OF RED SHALES AND RED FLUVIAL NONBITUMINOUS SANDSTONES. ESTABLISHED MEMBERFORMATION CONTACT. INFERRED MEMBERFORMATION CONTACT. STRIKE AND DIP OF BEDDING PLANES. _ ^ SKETCH OF MAJOR TAR SAND OUTCROPS SEEN FROM 0.5- > ^ * ^ ^ ^? 1.0 MILE AWAY. COMPLETED NEAR END OF FIELD SEASON. O AMOCO N 9 TD 914' TSAT MSAT DSAT BSAT MS N. I NOTE: CENTRAL CLOTS ARE CHANNEL DEPOSITS ANDOR CHANNEL MOUTH BARS WITH ASSOCIATED SHEET SANDS. LOWER LIMIT OF TAR SANDS CORE DRILL HOLE TOTAL DEPTH IN FEET TOTAL FOOTAGE ALL SATURATED SEDIMENTS. TOTAL FOOTAGE MAIN SATURATED ZONES, MINIMUM 10 FEET THICK. DEPTH TO TOP OF PRINCIPAL SATURATED ZONES. BOTTOM OF SATURATED SEDIMENTS. MEASURED SECTION WITH TRAVERSE DIRECTIONS. PHOTOGRAPH LOCATION, DIRECTION OF VIEW AND NO. SPRING-APPRO. NORMAL FLOW, GALLONS PER DAY. GEOLOGIC SURVEY CONTROL TRAVERSE STATION POINT DRILL HOLES LOCATED BY SURVEY COORDINATES. AND TOPOGRAPHIC FEATURES POSITIONED BY ENLARGEMENT OF BRUIN POINT AND PATMOS HEAD 7.5 MINUTE U.SG.S. QUADRANGLES L CONTOUR nrth ROADS FEET INTERVAL 40 FEET 70,000- NS^J: " '^ - r..''...,:. :..' ' -.; :>l ; i'-.: feiw ; - V.' ^?;,5-.*::.^: Tw? LU : Tgd va Ul f vt> Tw? LU MS N 6 True lcatin 500'suth TSAT 109' MSAT 109' DSAT -0- BSAT 242' Tgd ^»> LJ ^vs^ ^M ; A W<'7- ^nvtv '' ' ; mm:-- «GREAT NATIONAL' - ; ^> 6" OIL SHALE ZONE LUi t, c t 1 7 * U v-ivi - ;): 1 h 7);i * M LU " ; : sin"* I '. V ^ 7 7 M. 'U x7. S V V v 7N v 7ji? -? ' P.-'i f, ;V -, -j > J ' ' «:.'.-'x '- : - ^>A.-v. *' ' ' ; n ; :...' -'-^ S ^ ; '. '. N...-:,u ; -. S. RANGE CREEK I (1964) 7 x i'.' ^H-NSAT,75 t.. DSAT 8.05V ESAT 1030'. $6V 70,000 N LU * >«^ V V V x ^ '.7n "" Tgp LU R 14 E RI5E MAP NO Amc Minerals Cmpany Denver Divisin SUNNYSIDE TAR SANDS SCALE l" = 500' CARBON COUNTY, UTAH GEOLOGIC MAP SOUTH HALF i?6 at&m DRAWN BY PL.B. GEOLOGY BY- Calkin & Ry Field Seasn 81 DATE^

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