DRAFT. LINEAMENT GROUP 17c MAP DATA. A17c.1. Notch in DEM is less sharply expressed in the field. Tvu. Qg Tvu 4. Tfv. Qg Tfv. Tvu. Tfv.
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1 Notch in EM is less sharply expressed in the field 7c 69 A 7b Tem v 5 Tvu Ti 7b Tvu v 5 A 7c Tem Tem Tvu TrPavs Qhg Tem 88 See Figure A7c. 88 v Tem Tvu 5 Jqd 8 TrPavs N Tvu Tvu km 88 TrPavs _89_Alaska_Railbelt/89_Lineament Report October, modified Qs 69 Ti Tem Notes:. See Figures A., A., A., and A.5 for explanation.. ata frame has been rotated 7 west of north.. Geology by Wilson et al., 9. /8/ 695 mi 69 LNEAMENT GROUP 7c MAP ATA A7c.
2 A) View in Photograph View looking southeasterly at lineament expressed at erosional drainage cutting through the likely Holocene rock glacier deposit. ) ) Surface possibly correlative to ice line 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. Approximate location of Photograph View looking northwesterly (opposite that in Photograph A) at lineament expressed as erosional drainage cutting through the likely Holocene rock glacier deposit. View looking southeasterly at lineament expressed as likely Holocene rock glacier deposit contacting the valley floor. /8/ LNEAMENT GROUP 7c A7c.
3 69 As p eek r en sin Ko k ree a No expression of lineament within glacial deposits (see Photograph F) Toe of rock glacier creates distinct northeast-facing break-in-slope er lack Riv lack Lake E 695 A Qs Jqm 55 9 N km Jqm Jtk mi _89_Alaska_Railbelt/89_Lineament Report October, modified.8. F 88 Notes:. See Figures A., A., A., and A.5 for explanation.. ata frame has been rotated 5 east of north.. Geologic map from Wilson et al., 9. STATE OF ALASKA SUSTNA-WATANA HYROELETR PROJET ALASKA ENERGY AUTHORTY /8/ ate LNEAMENT GROUP 9 MAP ATA FGURE A9-.
4 A) ) rainage shown in Photograph rainage shown in Photograph Less resistant rock type Lighter rocks More resistant rock type (craggy outcrops) arker rocks Photograph taken from location A looking southwest along apparent rock type contrast (contact) and towards mapped lineaments in steep-walled, v-shaped, linear drainage. Arrows point along apparent contact between less-resistant rock on the north and more resistant and craggy outcrops on the south. Photograph taken from location looking west along mapped lineaments and apparent rock contact in steep-walled, v-shaped, linear drainages. ) 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. arker rocks Lighter rocks Photograph taken from location looking west at head of steep-walled, v-shaped, linear drainage where mapped lineaments correspond to apparent rock contact. /8/ LNEAMENT GROUP 9 A9-.
5 ) E) arker rocks Location of Photograph F Lighter rocks Kosina reek Photograph looking northeast from location along the western continuation of the apparent rock type contrast shown in Photographs A,, and. Arrows point along apparent contact. Photograph from location E looking southwest down the ridgeline shown in Photograph. View is 8 degrees from that in Photograph. Note presence of rock glacier and glacial deposits in valley bottom. Arrows point along apparent contact. F) 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. Lineament created by contact does not continue along strike Active rock glacier Older glacial moraine deposits nactive rock glacier or younger glacial moraine Lineament created by contact does not continue Photograph looking northwest from location F showing apparently undeformed rock glacier and/or glacial deposits along strike of the mapped lineaments and apparent rock contact shown in Photographs A through. /8/ LNEAMENT GROUP 9 A9-.
6 km rad ius h reek usc Linear sub-ice channels in Photograph lack Lake Location of sinuous sub-ice channel in Photograph Go ose ree k 69 reek se Goo A 65 Sub-ice fluvial channels Qs Qs N 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. km Jqm Jqm Jtk 55 Qs Notes:. See Figures A., A., A., and A.5 for explanation.. ata frame has been rotated 5 east of north.. Geologic map in top panel by Williams and Galloway, 986 and bottom panel by Wilson et al., 9 65 STATE OF ALASKA ALASKA ENERGY AUTHORTY /8/ ate 69 SUSTNA-WATANA HYROELETR PROJET LNEAMENT GROUP 9 MAP ATA mi FGURE A9-.
7 A) ) ~6 m Linear sub-ice fluvial channels ~75 m Sinuous sub-ice fluvial channels Photograph taken from location A looking west. Arrows point along trend of mapped lineaments along southwest-facing aligned break-in-slope. Note the rounded and subdued nature of break-in-slope. Relief across break-in-slope is ~5 m. Photograph looking southwest from location. The sinuous sub-ice channels are not large enough features to be seen on NSAR data. ) 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. Goose reek Overview photograph looking southwest from location along alignment of mapped lineaments. Arrows point along trend of lineament group 9. Note absence of expression of lineaments within the landscape across the Goose reek portion of the lineament group. /8/ LNEAMENT GROUP 9 A9-.
8 ius rad ch reek us 6 75 km k ree se Goo Extent of map in Figure A9-. 6 Jqm N A 75 Qs 79_89_Alaska_Railbelt/89_Lineament Report October, modified km 7 mi Notes:. See Figures A., A., A., and A.5 for explanation.. ata frame has been rotated 5 east of north.. Geologic map in top panel by Williams and Galloway, 986 and bottom panel by Wilson et al., 9 STATE OF ALASKA ALASKA ENERGY AUTHORTY /8/ ate SUSTNA-WATANA HYROELETR PROJET LNEAMENT GROUP 9 MAP ATA FGURE A9-.
9 A) ) Photograph looking north-northeast from location A along the east-facing break-in-slope that defines the northeast portion of LG 9. Arrows point along alignment of mapped lineaments. Photograph looking northwest from location at sub-ice fluvially-eroded channels. Arrows point along the trend of mapped lineaments that make up group 9. ) Elevation from nsar data (meters) _89_Alaska_Railbelt/89_Lineament Report October, modified.8. Photograph looking south-southwest from location at widely spaced, near vertical, well-developed joints in trondhjemite (aka tonalite) bedrock. Joint spacing is to.5 meters. Predominant orientations of joints are /8SE, /85SE, and 8/85SE but other orientations exist. Joint faces have clean surfaces with relief of minerals of to mm. No gouge or mineralization observed on joint surfaces, nor any sense of movement indicators (striae or mullions) etailed EM showing orthogonal joint sets at northeast end of group 9. /8/ m, ft 7 69 LNEAMENT GROUP 9 A9-.
10 Jnc Jnc U Jnbc Kc Kn Jnc 8 69 Apparent rock type contrasts Location of granitic glacial erratic Ks Js Jtk Js Js Jnc Glacial lake sediments Qal d Ks F E U A reek T yone U Ks U Qal e on Ty Ks ek re Jnc Knu G 689 Qal Qls d 9 69 mi km N Qls Qls H 689 Qls Qal Qls Jnc 689 H km km NN G 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. 9 F 8 8 Apparent rock type contrasts mi 95 mi 695 Notes:. See Figures A., A., A., and A.5 for explanation.. ata frame has been rotated 5 east of north.. Geologic map from Grantz, 96. /8/ LNEAMENT GROUP MAP ATA A.
11 A) ) ) Photograph looking northeast from location A. Location of straight-line projection of mapped fault shown in Figure A. (upper panel) Photograph looking west-southwest from location. Geologist standing in - to 6-m deepand ~-m-wide swale. Swale only exists in saddle; it does not continue down either side of saddle. 79_89_Alaska_Railbelt/89_Lineament Report October, modified.8. Photograph looking southwest from location. asal contact shown by arrows. Note that base of contact is not apparently deformed along projection of fault and that no expression of faulting in valley bottom is apparent. /8/ LNEAMENT GROUP A.
12 G) ) Projection of FL mapped lineament Ks Photograph looking north from location G along mapped fault of Grantz (96). Arrows point to approximate location of mapped fault. Note absence of apparent geomorphic expression fault. Photograph looking northeast from location. Note absence of deformation in ridge line of. E) F) d d d d 79_89_Alaska_Railbelt/89_Lineament Report October, modied.8. Arrows show location of FL mapped lineament (shallow U-shaped swale). Note no apparent deformation of white-bedded sediments (glacial lake sediments) along projection of lineament. /8/ d Photograph looking northwest from location F. Absence of apparent deformation along projection of lineament LNEAMENT GROUP A.
13 H) ) Photograph looking north-northeast from location H along queried mapped fault of Grantz (96) that lies outside of lineament group. Note absence of fault expression. Photograph looking north-northeast from location along queried mapped fault of Grantz (96) that lies outside of lineament group. Note absence of fault expression. 79_89_Alaska_Railbelt/89_Lineament Report October, modoified.8. /8/ LNEAMENT GROUP A.
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