REMARKS. NANNOFOSSIL CLAYSTONE, CLAYSTONE, and CALCAREOUS SANDY SILTSTONE
|
|
- Hector Lloyd
- 6 years ago
- Views:
Transcription
1 SITE 069 HOLE A CORE R CORED mbsf 069A-R ACCEORIES NANNOFOIL CLAYSTONE, CLAYSTONE, and CALEOUS SANDY SILTSTONE CC AGE: middle Eocene Major Lithologies: Greenish gray (G 6/) to moderate yellowish brown (0YR /) NANNOFOIL CLAYSTONE forms ~0% of the core, and moderate brown (YR /) CLAYSTONE and very light gray (N8) CALEOUS SANDY SILTSTONE each form ~0%. Minor Lithology: Very light gray (N8) to white (N9) FORAMINIFERAL SANDSTONE forms <% of the core. The core dominantly consists of upward darkening sequences ( to cm thick) of moderate brown CLAYSTONE overlying light colored NANNOFOIL CLAYSTONE. Very light gray CALEOUS SANDY SILTSTONE commonly occurs at the base of these sequences and is massive, wavy or planar laminated. Laminated FORAMINIFERAL SANDSTONE containing black lithic fragments occurs at the base of upward darkening sequences in Section, 0- cm, cm, 88-9 cm, and 0- cm. The thickness of individual sandstone intervals is highly variable, ranging from very thin laminae, often disturbed by burrowing, to beds ~6 cm thick. An upward fining sequence occurs in Section, 00-0 cm. Within individual sequences the contact between the NANNOFOIL CLAYSTONE and the overlying CLAYSTONE is obscured due to bioturbation. Distinct burrow fills of CLAYSTONE occur in the upper part of the NANNOFOIL CLAYSTONE. Black laminae occur in Section, 0 cm and cm. SITE 069
2 6 SITE 069 HOLE A CORE R ACCEORIES CORED mbsf 069A-R SITE 069 CC IW CALEOUS CLAYSTONE and NANNOFOIL CLAYSTONE AGE: middle to early Eocene Major Lithologies: Greenish gray (GY 6/) CALEOUS CLAYSTONE and NANNOFOIL CLAYSTONE form ~60% of the core. Minor Lithologies: Moderate brown (YR /) CLAYSTONE forms ~0% of the core, light gray (N7) CALEOUS SANDY SILTSTONE forms ~%, and CALEOUS FORAMINIFERAL SANDSTONE forms <%. The core dominantly consists of thin bedded CLAYSTONE and CALEOUS CLAYSTONE and NANNOFOIL CLAYSTONE which is moderately bioturbated. Relatively undisturbed upward darkening sequences ( to cm thick) of CLAYSTONE overlying CALEOUS CLAYSTONE or NANNOFOIL CLAYSTONE and containing a CALEOUS SANDY SILTSTONE base occur in increasing frequency downcore. Parallel laminations sometimes occur in the CALEOUS SANDY SILTSTONE and in the overlying CALEOUS CLAYSTONE or NANNOFOIL CLAYSTONE. A cm thick CALEOUS FORAMINIFERAL SANDSTONE occurs at the base of an upwards darkening sequence in Section, 80 to 8 cm. Within individual sequences the contact between the CALEOUS CLAYSTONE or NANNOFOIL CLAYSTONE and the overlying CLAYSTONE is obscured due to bioturbation. Distinct burrow fills of CLAYSTONE occur in the upper part of the calcareous lithologies.
3 SITE 069 HOLE A CORE R CORED mbsf 069A-R ACCEORIES CC NANNOFOIL CLAYSTONE and CALEOUS SILTY SANDSTONE WITH NANNOFOILS AGE: middle to early Eocene Major Lithologies: Greenish gray (G 6/) to pale yellowish brown (0YR 6/) NANNOFOIL CLAYSTONE forms 60% of the core, and light gray (N7) to very light gray (N8) CALEOUS SILTY SANDSTONE WITH NANNOFOILS forms ~%. Minor Lithologies: Moderate brown (YR /) CLAYSTONE forms ~% of the core, and white (N9) NANNOFOIL SILTSTONE WITH FORAMINIFERS forms <%. The core is dominated by upward darkening sequences, - cm thick, of dark CLAYSTONE overlying NANNOFOIL CLAYSTONE, and a light colored base of CALEOUS SILTY SANDSTONE WITH NANNOFOILS. In Section, 00-0 cm, and Section, 8-0 cm, these sequences are relatively thin (< cm) and moderately bioturbated. In these intervals, sandstone bases are typically limited to thin bioturbated laminae or are absent. In the remainder of the core, upward darkening sequences have thicker ( to ~6 cm) sandstone bases, which are typically parallel, wavy or cross laminated. In Section, 6-7 cm, a climbing ripple structure is present in CALEOUS SILTY SANDSTONE WITH NANNOFOILS. Distinct CLAYSTONE caps are sometimes absent in individual sequences, occurring only as burrow fills near the top of the underlying NANNOFOIL CLAYSTONE. At the base of Section CC (0- cm), white NANNOFOIL SILTSTONE WITH FORAMINIFERS occurs, containing greenish gray laminae of NANNOFOIL CLAYSTONE. SITE 069 7
4 8 SITE 069 HOLE A CORE R ACCEORIES CORED mbsf 069A-R SITE 069 CC NANNOFOIL CLAYSTONE and CALEOUS SANDY SILTSTONE WITH NANNOFOILS AGE: early Eocene Major Lithologies: Greenish gray (G 6/) to light brown (YR 6/) NANNOFOIL CLAYSTONE forms 60% of the core, and greenish gray (GY 6/) to light gray (N7) CALEOUS SANDY SILTSTONE WITH NANNOFOILS forms 0%. Minor Lithologies: Moderate brown (YR /) CLAYSTONE forms 0% of the core, and mottled gray CALEOUS SILTY SANDSTONE forms <%. A cm thick mottled white, brown, and black CONGLOMERATE occurs in Section, -6 cm. The core is dominated by thin bioturbated beds (-6 cm thick) of NANNOFOIL CLAYSTONE, CALEOUS SANDY SILTSTONE WITH NANNOFOILS and CLAYSTONE. Most lithological contacts between the calcareous lithologies are disturbed by drilling. Upward darkening sequences of these lithologies occur infrequently. Bioturbation typically obscures the contact between the NANNOFOIL CLAYSTONE and overlying CLAYSTONE, and sometimes CLAYSTONE is limited to burrow fills near the top of the NANNOFOIL CLAYSTONE. CALEOUS SANDY SILTSTONE WITH NANNOFOILS typically contains parallel laminations. In Section, - cm, fine to coarse-grained laminated CALEOUS SILTY SANDSTONE occurs.
5 SITE 069 HOLE A CORE R CORED mbsf 069A-R ACCEORIES CC NANNOFOIL CLAYSTONE and CALEOUS SANDY SILTSTONE AGE: early Eocene Major Lithologies: Greenish gray (GY 6/ to G 6/) NANNOFOIL CLAYSTONE forms 70% of the core, and light gray (N7) to greenish gray (G 6/) CALEOUS SANDY SILTSTONE forms 0%. Minor Lithologies: Moderate brown (YR /) CLAYSTONE forms <0% of the core. Because of the extreme drilling disturbance of the core, most of the lithologic contacts are disturbed. Upward-darkening sequences of CLAYSTONE, NANNOFOIL CLAYSTONE and massive or laminated CALEOUS SANDY SILTSTONE occur in Section, -6 cm, and 7-8 cm. Thinly bedded disturbed sequences of CLAYSTONE and NANNOFOIL CLAYSTONE form the majority of the core. Bioturbation is common in the CLAYSTONE and NANNOFOIL CLAYSTONE. Some burrows of Planolites(?) occur in Section at 6 cm and cm. SITE 069 9
6 0 SITE 069 HOLE A CORE 6R ACCEORIES CORED mbsf 069A-6R SITE IW lt BR CLAYSTONE, CALEOUS CLAYSTONE, and NANNOFOIL CLAYSTONE AGE: early Eocene Major Lithologies: Moderate brown (YR /), light brown (YR /6), pale brown (YR /), and greenish gray (G 6/) CLAYSTONE forms ~60% of the core, and light greenish gray (G 8/) to light brown (YR /6) CALEOUS CLAYSTONE and NANNOFOIL CLAYSTONE form ~0%. Minor Lithologies: Light gray (N7) and medium gray (N) CALEOUS SANDY SILTSTONE forms <% of the core, and white (N9) and dark gray (N) CALEOUS SANDY SILTSTONE WITH FORAMINIFERS forms <%. 6 7 CC lt Section through Section, 7 cm, is dominated by bioturbated couplets (- cm) of moderate brown CLAYSTONE and lighter colored CALEOUS CLAYSTONE or NANNOFOIL CLAYSTONE. Thin laminae, lenses, or rarely thin beds, of CALEOUS SANDY SILTSTONE occur at the base of some of the couplets. Some upward darkening sequences (-9 cm thick) of these lithologies are distinguishable among the couplets. A thin bioturbated bed of pale brown CLAYSTONE occurs in Section, -7 cm. In Section, -7 cm, parallel laminated and sometimes inter-laminated CALEOUS SANDY SILTSTONE, CALEOUS SILTSTONE WITH FORAMINIFERS, and greenish gray CALEOUS CLAYSTONE occur. Possible flute casts occur at the base of a very thin CALEOUS SANDY SILTSTONE bed at cm. From Section, 7 cm through Section CC, 6 cm, moderate brown CLAYSTONE occurs, containing rare CLAEOUS SANDY SILTSTONE as laminae and bioturbated lenses. The laminae and lenses are typically rimmed by greenish gray CLAYSTONE.
7 SITE 069 HOLE A CORE 7R CORED mbsf 069A-7R ACCEORIES CC dk lt GY ol GY lt ol GY CLAYSTONE AGE: late Paleocene Major Lithology: Moderate brown (YR /) to greenish gray (G 6/) and olive gray (Y /) CLAYSTONE forms 7% of the core. Minor Lithologies: Light gray (N7) to white (N9) CALEOUS SANDY SILTSTONE forms ~0% of the core, and light brown (YR /6) to greenish gray (GY 6/) CALEOUS CLAYSTONE and light greenish gray NANNOFOIL CLAYSTONE form ~%. Sections - are dominated by bioturbated moderate brown CLAYSTONE, containing rare CALEOUS SILTSTONE and NANNOFOIL CLAYSTONE as laminae and bioturbated lenses. The laminae and lenses are typically rimmed by greenish gray CLAYSTONE. Thicker (- cm) CALEOUS SILTSTONE intervals occur in Section, 9- cm; Section, -8 cm, 0- cm, and 7-0 cm; and Section, 89-9 cm, -6 cm, and 8-0 cm. A series of bioturbated thin black laminae and lenses in Section, 0-0 cm, are correlated with high magnetic susceptibility measurements. Sections through CC are dominated by upward darkening sequences, some of which are also upward fining, of dark colored CLAYSTONE overlying lighter CALEOUS CLAYSTONE or NANNOFOIL CLAYSTONE. Light gray CALEOUS SILTSTONE bases are variable in thickness and are frequently absent. Sandstone lithologies throughout the core can be massive, bioturbated, wavy, parallel, or cross laminated, and sometimes contain laminae of greenish gray CLAYSTONE or CALEOUS CLAYSTONE. SITE 069
8 SITE 069 HOLE A CORE 8R ACCEORIES CORED mbsf 069A-8R SITE CC dk dsk bl GN gy BR ye GY CLAYSTONE AGE: barren Major Lithology: Dusky blue green (BG /), dark greenish gray (GY /), grayish brown (YR /) and moderate brown (YR /) CLAYSTONE forms ~8% of the core. Minor Lithologies: Dark greenish gray (GY /) to light greenish gray (G 8/) CALEOUS CLAYSTONE forms <0% of the core. Yellowish gray (Y 8/) CALEOUS SANDSTONE forms ~% of the core. Thin to medium bedded CLAYSTONE dominates the core. Only rare sequences of CLAYSTONE underlain by CALEOUS CLAYSTONE are discernible in Section, 0-9 cm, because of bioturbation and also because the different lithologies are similar in color in this interval. The color changes from dominantly green-gray to dominantly brown below Section, cm. In Section, 9-9 cm, four beds, -9 cm thick, of CALEOUS SANDSTONE occur, intercalated by millmeter-thick dark greenish gray CLAYSTONE or CLAEOUS CLAYSTONE. The lowermost CALEOUS SANDSTONE bed consists of fine to medium sand with clayey, silty laminae. Four massive coarse grained CALEOUS SANDSTONE beds occur in Section, 9-0 cm, which are separated by thin claystone laminae. Elongated grains in these sandstones are subparallel to bedding.
9 SITE 069 HOLE A CORE 9R CORED mbsf 069A-9R ACCEORIES IW CLAYSTONE AGE: middle Paleocene Major lithology: Dark reddish brown (0R /), moderate reddish brown (0R /6) and dark greenish gray (GY /) CLAYSTONE forms ~8% of the core. 9 CC lt dk rd BR Minor Lithologies: Dark greenish gray (GY /) to greenish gray (GY 6/) CALEOUS CLAYSTONE and light gray (N7) to greenish gray (GY 6/) CALEOUS CLAYEY SILTSTONE to SANDY SILTSTONE each form <0% of the core. CALEOUS SANDSTONE forms ~ % 0f the core. The core is dominated by upward-darkening sequences (typically -0 cm thick, and exceptionally cm) consisting of lighter colored CLAYSTONE or CALEOUS CLAYSTONE overlain by darker colored CLAYSTONE. In Section, Section, 0-0 cm, and Section, 0-0 cm the upper CLAYSTONE in individual sequences is greenish gray in color; elsewhere it is reddish brown. Many of the upward-darkening sequences contain thin (< mm) parallel laminated intervals of CALEOUS CLAYEY SILTSTONE to SANDY SILTSTONE. These laminae are sometimes disrupted or lenticular. A few thicker (- cm) intervals of CALEOUS SANDY SILTSTONE also occur, containing burrows and/or disrupted laminae, and become more common downhole. In Section two beds of well cemented CALEOUS SANDSTONE occur at 0- cm and -6 cm. Both show parallel lamination, and the upper one contains a normal fault confined to the middle part of the bed. In Section, cm, an interval of heterogeneous CALEOUS SANDSTONE occurs. Slightly concave-up parallel laminae occur near its base, above which occurs a curved erosional surface. This is overlain by a coarse to fine grained, normally graded lithic CALEOUS SANDSTONE. A mm zone of microfaulting occurs at the top of the lithic CLAEOUS SANDSTONE and can be traced upwards into the overlying CALEOUS CLAYSTONE. SITE 069
10 SITE 069 HOLE A CORE 0R ACCEORIES CORED mbsf 069A-0R SITE CC med rd BR med rd BR CALEOUS CLAYSTONE, CLAYSTONE, and CALEOUS SANDSTONE AGE: early Paleocene Major Lithologies: Moderate brown (YR /) to greenish gray (GY 6/) CALEOUS CLAYSTONE forms ~0% of the core, moderate reddish brown (0R /6) CLAYSTONE forms ~0%, and very light gray (N8) to yellowish gray (Y 8/) CALEOUS SANDSTONE forms ~%. Minor Lithology: Greenish gray (G 6/) to light gray (N7) CALEOUS SILTSTONE forms ~% of the core. Four distinct lithologic associations are present in the core: () ~ 0 cm thick sequences of CALEOUS SANDSTONE at the base, followed by CALEOUS SILTSTONE, CALEOUS CLAYSTONE and CLAYSTONE; () medium to thin bedded sequences of laminae or thin layers of CALEOUS SILTSTONE as the basal layer, followed by CALEOUS CLAYSTONE and CLAYSTONE; () thin bedded CALEOUS CLAYSTONE and CLAYSTONE sequences; () CLAYSTONE separated by CALEOUS SILTSTONE laminae. Bioturbation occurs dominantly in the CLAYSTONE and CALEOUS CLAYSTONE and CALEOUS SILTSTONE beds, but in some cases thin CALEOUS SANDSTONE beds are disrupted by Planolites(?) burrows. CALEOUS SANDSTONE in Section, 69-7 cm, Section 7, -6 cm, and Section 8, - cm, show nearly vertical stylolite planes. CALEOUS SANDSTONE in Section, -7 cm, and 8-9 cm, form the base of complete upward darkening sequences and show features typical of Bouma Sequence units Ta (massive bedding), Tb (parallel lamination), and Tc (cross bedding). The overlying CALEOUS SILTSTONE or CALEOUS CLAYSTONE and CLAYSTONE correspond to Bouma units Td and Te. Sections 7 and 8 were recovered in a separate core barrel from Sections -. As a result part of Sections 7 and 8 may overlap with Sections and 6.
11 SITE 069 HOLE A CORE R CORED mbsf 069A-R ACCEORIES CC vlt GY vlt GY CLAYSTONE AGE: early Paleocene Major Lithology: Moderate brown (YR /) CLAYSTONE forms 80% of the core. Minor Lithologies: Very light gray (N8) to white (N9) CALEOUS SANDSTONE forms 0% of the core. Greenish gray (GY 6/) and moderate brown (YR /) to light brown (YR 6/) CALEOUS CLAYSTONE to CALEOUS CHALK, and dark greenish gray (GY /) CALEOUS SILTY CLAYSTONE each form ~% of the core. Three lithological associations are present in the core: () thin upward-darkening sequences (- cm) in which either CALEOUS SILTY CLAYSTONE or CALEOUS CLAYSTONE to CALEOUS CHALK is capped by CLAYSTONE; () thick intervals (as much as m) of CLAYSTONE containing thin (< cm) beds of either CALEOUS CLAYSTONE or CALEOUS SILTY CLAYSTONE; and () to cm thick beds of CALEOUS SANDSTONE. Many of the CALEOUS SANDSTONE beds are normally graded, and most show parallel, planar and trough cross laminae of alternating SANDSTONE and greenish gray SILTY or CLAYEY SANDSTONE. Parallel, interlaminated and slightly bioturbated intervals (< cm thick) of CALEOUS SILTY CLAYSTONE and CALEOUS SANDSTONE occassionally occur above the CALEOUS SANDSTONE beds. These interlaminated intervals are sometimes overlain by bioturbated CALEOUS CLAYSTONE up to cm thick. Thin bioturbated CALEOUS CLAYSTONE may also occur directly above some CALEOUS SANDSTONE beds. SITE 069
12 6 SITE 069 HOLE A CORE R ACCEORIES CORED mbsf 069A-R SITE 069 CALEOUS SANDSTONE, CALEOUS CLAYSTONE and CALEOUS CHALK Age: barren CC IW lt GY lt GY lt BR Major Lithologies: Light gray (N7) to white (N9) CALEOUS SANDSTONE forms 0% of the core and moderate brown (YR /) to light brown (YR 6/) CALEOUS CLAYSTONE to CALEOUS CHALK forms ~0%. Minor Lithologies: Moderate brown (YR /) CLAYSTONE forms ~% of the core, light gray (N7) to greenish gray (GY 6/) CALEOUS SILTSTONE forms ~%, and light brown (YR 6/) to very pale orange (0YR 8/) NANNOFOIL CHALK forms ~%. Mottled white (N9), dark greenish gray (GY /), and dark gray (N) CONGLOMERATE forms <% of the core. The following changes in lithological assemblages occur in the core (starting at the base): From Section CC, 7 cm to Section, 7 cm, poorly developed thin upward-darkening sequences occur in which either CALEOUS SILTSTONE or CALEOUS CLAYSTONE to CALEOUS CHALK is capped by CLAYSTONE. Within this interval, and also in Section, cm, and Section, -8 cm, CLAYSTONE dominated successions up to 0 cm thick occur. NANNOFOIL CHALK occurs at the bases of three upward-darkening sequences between Section, cm, and Section, cm. Two types of CALEOUS SANDSTONE are present above Section, 69 cm in the core. One is white, and the other has a salt and pepper appearance due to the presence of dark green clasts. Both types occur in beds between and cm thick. Some of them are normally graded, and most show parallel, planar and trough cross laminae of alternating sandstone and greenish gray silty or clayey sandstone. Thin upward-darkening sequences occur above some of the CALEOUS SANDSTONES. They consist of bioturbated CALEOUS CLAYSTONE capped by CLAYSTONE. A lithic CONGLOMERATE containing dark green meta-basic and light colored limestone clasts up to 0. cm across occurs in Section 6, - cm.
13 SITE 069 HOLE A CORE R CORED mbsf 069A-R ACCEORIES 6 7 CC mlt GY mlt GY CLAYSTONE and SILTY CLAYSTONE AGE: Cretaceous Major Lithology: Moderate reddish brown (YR 6/) and rarely greenish gray (GY 6/) CLAYSTONE and SILTY CLAYSTONE form ~60% of the core. Minor Lithologies: Moderate brown (YR /) to light brown (YR 6/) and rarely greenish gray (GY 6/) CALEOUS CLAYSTONE forms ~0% of the core, light gray (N7) to white (N9) CALEOUS SILTSTONE forms ~%, and yellowish gray (Y 8/) CONGLOMERATE and very light gray (N8) to white (N9) SANDSTONE each form <%. The core is dominated by thin bedded, moderate reddish brown CLAYSTONE to SILTY CLAYSTONE containing very thin bioturbated beds (< cm) or laminae of greenish gray CLAYSTONE or CALEOUS CLAYSTONE and light gray laminae of CALEOUS SILTSTONE. CALEOUS SILTSTONE beds, -0 cm thick, occur interbedded with the CLAYSTONE in Sections through CC. These siltstone beds are parallel or cross laminated, and sometimes contain greenish gray CLAYSTONE or CALEOUS CLAYSTONE laminae. Bioturbation is common at the top of individual SILTSTONE beds. Poorly developed, thin (-0 cm) upward darkening sequences of either CALEOUS SILTSTONE or CALEOUS CLAYSTONE overlain by CLAYSTONE occur from Section, 7 cm, to Section, 0 cm. Throughout the core CLAYSTONE and CALEOUS CLAYSTONE lithologies are well mixed by bioturbation. In Section, 7- cm, a CONGLOMERATE containing shallow water limestone and dark colored basement(?) clasts occurs. At the base of Section CC, a SANDSTONE of similar composition occurs. SITE 069 7
14 8 SITE 069 HOLE A CORE R ACCEORIES CORED mbsf 069A-R SITE 069 CLAYSTONE CC mlt GY AGE: barren Major Lithology: Moderate brown (YR /) to moderate reddish brown (YR 6/) and rarely greenish gray (GY 6/) CLAYSTONE forms 6% of the core. Minor Lithologies: Moderate brown (YR /), light brown (YR 6/) and rarely greenish gray (GY 6/) CALEOUS CLAYSTONE forms % of the core. Moderate brown (YR /), dark yellowish brown (0YR /), and light gray (N7) to greenish gray (GY 6/) CALEOUS CLAYEY SANDSTONE, and very light gray (N8) to light gray (N7) CALEOUS SILTSTONE each form 0% of the core. A mottled white (N9) and dark gray (N) CONGLOMERATE forms <% of the core. The core is dominated by thinly bedded brown CLAYSTONE, containing very thin bioturbated beds (< cm) or laminae of greenish gray CLAYSTONE or CALEOUS CLAYSTONE and light gray laminae of CALEOUS SILTSTONE. CALEOUS CLAYEY SANDSTONE beds, - cm thick, occur interbedded with the CLAYSTONE in all sections, but are thickest in Sections and. These sandstone beds are typically massive, but occasionally parallel, wavy or cross laminated, and bioturbated. They sometimes contain greenish gray CLAYSTONE or CALEOUS CLAYSTONE laminae. Poorly developed, thin (-0 cm) upward darkening sequences with a base of CALEOUS SILTSTONE or CALEOUS CLAYEY SANDSTONE, overlain by CALEOUS CLAYSTONE, and capped by CLAYSTONE occasionally occur in Sections through. CLAYSTONE and CALEOUS CLAYSTONE lithologies are often well mixed by bioturbation. In Section, -7 cm, an upward fining and darkening sequence occurs with CONGLOMERATE at the base.
15 SITE 069 HOLE A CORE R CORED mbsf 069A-R ACCEORIES CC IW mlt GY lt ye GY mlt GY CALEOUS SILTY SANDSTONE, CALEOUS SANDSTONE, CALEOUS CLAYSTONE, NANNOFOIL CHALK, and CLAYSTONE AGE: late Campanian Major Lithology: Light gray (N7), pale yellowish brown (0YR 6/) and mottled white (N9) and medium gray (N) CALEOUS SILTY SANDSTONE and CALEOUS SANDSTONE form ~% of the core. Moderate brown (YR /) to light brown (YR 6/) and greenish gray (GY 6/) CALEOUS CLAYSTONE and NANNOFOIL CHALK form ~% of the core, and moderate brown (YR /) CLAYSTONE forms 0%. The core is dominated by upward darkening sequences (-0 cm thick) of CALEOUS SANDSTONE or CALEOUS SILTY SANDSTONE overlain by CALEOUS CLAYSTONE or NANNOFOIL CHALK, and capped by CLAYSTONE. CLAYSTONE and the underlying calcareous lithologies are often well mixed by bioturbation in thinner sequences. The basal sandstone lithology is variable in thickness, often limited to thin bioturbated laminae, or is absent. However, medium to coarse-grained CALEOUS SILTY SANDSTONE and CALEOUS SANDSTONE beds, - cm thick increasingly occur downcore, some of which are part of upward darkening and upward fining sequences. These sandstone beds are typically massive, but occasionally parallel, wavy or cross laminated, and bioturbated. Interbedded with thick sandstone lithologies in Section are intervals dominated by thin bedded CLAYSTONE, containing very thin bioturbated beds (< cm) or laminae of greenish gray CLAYSTONE or CALEOUS CLAYSTONE and rare light gray laminae of CALEOUS SILTSTONE. SITE 069 9
16 0 SITE 069 HOLE A CORE 6R ACCEORIES CORED mbsf 069A-6R SITE CC pal BR pal ye BR med ye BR dsk YE NANNOFOIL CHALK and SANDSTONE AGE: Late Jurassic Major Lithologies: Mottled dusky yellow (Y 6/) to light olive brown (YR /6) NANNOFOIL CHALK forms ~60% of the core, and pale brown (YR /) and pale yellowish brown (0YR 6/) CALEOUS SANDSTONE forms ~%. Minor Lithologies: Moderate reddish brown (0R /6) to moderate brown (YR /) CLAYSTONE form ~0%, and greenish gray (GY 6/) CALEOUS CLAYSTONE, light gray (N7) CALEOUS SILTSTONE, light gray (N7) BOUNDSTONE, medium dark gray (N) CLAY, and grayish brown (YR /) CLAYSTONE form the remainder of the core. CLAYSTONE, CALEOUS CLAYSTONE, and CALEOUS SILTSTONE occur in Section, 0-0 cm, 0-6 cm, cm, -0 cm, 8-0 cm, and Section, 0- cm. Complete upward-darkening sequences do not occur. Section, 0-0 cm, 0-76 cm, 78- cm, and 0-8 cm are dominated by massive, sometimes fining-upward CALEOUS SANDSTONE. Mud clasts (possibly burrows?) of CLAYSTONE and CALEOUS CLAYSTONE occur in these sandstones. From Section, cm to Section, 6 cm, a massive NANNOFOIL CHALK occurs. Rare irregular and disrupted bedding structures dip ~0-0 and are sometimes crosscut by faint sub-horizontal color bands. Shell fragments occur in Section, - cm, 9 cm, and cm. Faults occur in Section, 9-6 cm. In Section, 6- cm, the NANNOFOIL CHALK is darker and more mottled in color, and disturbed by slumping. Sand and gravel-sized basement(?) clasts are mixed with the nannofossil chalk in the slumped interval. In Section, - cm a dark gray CLAY occurs which is strongly disturbed. At the top of this CLAY a carbonate clast occurs. In the core catcher an ~8 x cm piece of BOUNDSTONE occurs. The BOUNDSTONE contains a spirit level structure fill within a indicting that the limestone piece is a large clast, or part of bivalve, in which the sparite/micrite boundary is vertical, a clast.
17 SITE 069 HOLE A CORE 7R CORED mbsf 069A-7R ACCEORIES 7 vlt GY vlt gy GY gn BK GRAINSTONE, RUDSTONE, BOUNDSTONE AND METASEDIMENT AGE: barren Major Lithologies: The core consists of pieces of very light gray (N8) to very pale orange (0YR 8/) GRAINSTONE, RUDSTONE, and BOUNDSTONE, and pieces of dark greenish gray (G /) to greenish black (GY /) METASEDIMENT. Pieces -8 (Section, 0- cm) and 0 (which may be a small roller out of sequence in the core) all consist of the limestone lithologies which contain clasts that vary in size from medium sand to large pebbles. The clasts are predominantly allochems and carbonate lithoclasts (coated grains, oncoids, skeletal debris, cryptalgal fragments, Chaetitid sponges, coral and other frame building organisms, plus occasional clasts of peloid grainstone), with scattered metasediment clasts up to mm across. Piece 8 is a breccia containing subrounded to subangular clasts (up to. cm) of metasedimentary rocks and boundstone set in a carbonate (possibly calcite and dolomite) matrix which contains fine sand to granule-sized angular metasediment clasts and pyrite grains. Pieces 9- (with the exception of 0 and 8 described above), and similar ones in Cores 069A-8R through -R, are metasiltstone, meta-arkose wacke amd dolomitic meta-arkose, showing lower greenschist facies metamorphism. Bedding (including cross bedding) is defined by darker and lighter gray layers. Foliation is oblique to the layers, and pyrite grains are aligned parallel to the foliation. The rocks contain quartz, plagioclase, muscovite and chlorite, and some are carbonate-rich. Pieces and look like pebble sized clasts. They have rounded outer smooth surfaces that do not show any percussion marks, which would suggest that the smooth surfaces were not created by drilling. SITE 069
18 SITE 069 HOLE A CORE 6G ACCEORIES CORED mbsf 069A-6G SITE dk LITHIC SAND AGE: not applicable Major Lithology: Dark greenish gray (G /) to grayish yellow (Y 8/) LITHIC SAND Minor Lithology: Yellowish gray (Y 8/)NANNOFOIL OOZE The medium to coarse grained LITHIC SAND consists of poorly sorted subangular to subrounded clasts of quartz and dark greenish gray meta-sediment basement clasts. The sand grains are mixed with a yellowish gray NANNOFOIL OOZE.
19 SITE 069 cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit Structure Measurement ID 7-069A-7R- UNIT V: META-ARKOSIC WACKE Pieces 9, -6, 0, and : Grayish black (N), medium dark gray (N) and dark greenish gray (GY /). METAMORIC STRUCTURES: Slightly foliated. 6 MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz -80 < anhedral detrital plagioclase 0-0 < anhedral detrital muscovite -0 <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic core photo UNIT V Vc VEINS: <%, pyrite and quartz. ADDITIONAL COMMENTS: Piece very fine-grained with coarser grained cross beds. Piece void space (after pyrite?). Piece 6 is relatively coarse-grained. Piece contains (reduction?) rings around pyrite(?) 6 CL: 090/0 7 Paleo Paleo 0 0 CORE/SECTION
20 SITE A-8R- core photo cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit UNIT V Structure Measurement ID UNIT V: META-ARKOSIC WACKE Pieces - : Dark gray (N) to medium dark gray (N). METAMORIC STRUCTURES: Slightly foliated. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz 70-8 < anhedral detrital plagioclase - < anhedral detrital muscovite -0 <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic pyrite < <0. euhedral VEINS: <%, pyrite and quartz. Veins parallel to foliation. ADDITIONAL COMMENTS: Ovoid structures contain pyrite and/or quartz in pieces and. Pyrite appears oxidized in Piece CORE/SECTION
21 SITE 069 core photo cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit UNIT V Structure Measurement ID 7-069A-9R- UNIT V: METASILTSTONE AND META-ARKOSIC WACKE Pieces and : Grayish black (N) to medium dark gray (N). METAMORIC STRUCTURES: Slightly foliated. Foliation intersects relict bedding in Piece. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz 70 < anhedral detrital plagioclase < anhedral detrital muscovite 0 <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic opaque mineral? <0. euhedral VEINS: 0 ADDITIONAL COMMENTS: Piece is a metasiltstone, and Piece is a very fine-grained meta-arkosic wacke. Pyrite absent? 00 0 CORE/SECTION
22 SITE 069 core photo cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit UNIT V Structure Measurement ID So,CL So,CL So,CL 7-069A-0R- UNIT V: META-ARKOSIC WACKE Pieces - : Grayish black (N) to medium dark gray (N). METAMORIC STRUCTURES: Slightly foliated. Foliation intersects relict bedding in Piece. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz < anhedral detrital plagioclase 0-0 < anhedral detrital muscovite - <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic VEINS: <%, pyrite and quartz. Veins cut foliation. Comments: Pyrite also occurs in isolated masses and with felsic minerals in ovoid pods (deformed burrows?). 0 ADDITIONAL COMMENTS: Relict bedding in Piece. Ovoid structures contain pyrite and/or quartz. Some hollow and lined with euhedral crystals CORE/SECTION 6
23 SITE 069 cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit Structure Measurement ID So,CL 7-069A-R- UNIT V: META-ARKOSIC WACKE Pieces -0 : Grayish black (N) to medium dark gray (N) METAMORIC STRUCTURES: Slightly foliated. Foliation intersects relict bedding in Pieces and. core photo UNIT V CL CL CL CL Vc MINERALOGY: Orig. Mineral Mode Size Shape Commens Name (%) (mm) quartz 0-70 < anhedral detrital plagioclase 0-0 < anhedral detrital muscovite <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic VEINS: <%, pyrite and quartz. Veins cut foliation. Comments: Pyrite also occurs with felsic minerals in ovoid pods (deformed burrows?). ADDITIONAL COMMENTS: Relict bedding in Piece. Drilling disturbance in Piece 8. Ovoid structures contain pyrite and/or quartz. Some ovoid structures are hollow and lined with euhedral crystals. Paleo 00 0 CORE/SECTION 7
24 SITE 069 core photo cm 0 Piece number A B 6 Graphic Representation Orientation Shipboard studies Lithologic unit UNIT V Structure Measurement ID So,CL So,CL Vc So,Vc 7-069A-R- UNIT V: META-ARKOSIC WACKE Pieces -6 : Grayish black (N) to medium dark gray (N). METAMORIC STRUCTURES: Slightly foliated. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz 0-70 < anhedral detrital plagioclase 0-0 < anhedral detrital muscovite <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic VEINS: <%, pyrite and quartz. Veins cut foliation. Comments: Pyrite more abundant than in Sections 0R- and R-. Pyrite also occurs with felsic minerals in ovoid pods (deformed burrows?). 0 ADDITIONAL COMMENTS: Ovoid structures contain pyrite and/or quartz. Some ovoid structures are hollow and lined with euhedral crystals CORE/SECTION 8
25 SITE 069 core photo cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit UNIT V Structure Measurement ID 7-069A-R- UNIT V: DOLOMITIC METASILTSTONE Pieces : Greenish black (G /). METAMORIC STRUCTURES: Slightly foliated. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz 60 < anhedral detrital plagioclase 0 < anhedral detrital muscovite <0. anhedral platy, metamorphic dolomite 0 <0. euhedral small, elongate grains chlorite <0. anhedral platy, metamorphic VEINS: No veins. 0 ADDITIONAL COMMENTS: Pyrite occurs in a few isolated masses. Relict lamination. Ovoid structures absent CORE/SECTION 9
26 SITE 069 core photo cm 0 Piece number Graphic Representation Orientation UNIT V Shipboard studies Lithologic unit Structure Measurement ID CL 7-069A-R- UNIT V: META-ARKOSIC WACKE Pieces - : Grayish black (N) to medium dark gray (N). METAMORIC STRUCTURES: Slightly foliated. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz 0-70 < anhedral detrital plagioclase 0-0 < anhedral detrital muscovite <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic VEINS: <%, Pyrite and quartz veins. Comments: Pyrite also occurs in ovoid structures with felsic minerals (deformed burrows?). 0 ADDITIONAL COMMENTS: Relict lamination. Drilling disturbance in Piece. Ovoid structures contain pyrite and/or quartz. Some ovoid structures are hollow and lined with euhedral crystals CORE/SECTION 60
27 SITE 069 core photo cm 0 Piece number Graphic Representation Orientation Shipboard studies Lithologic unit UNIT V Structure Measurement ID CL So,CL 7-069A-R- UNIT V: META-ARKOSIC WACKE Pieces and : Grayish black (N) to medium dark gray (N). METAMORIC STRUCTURES: Slightly foliated. MINERALOGY: Orig. Mineral Mode Size Shape Comments Name (%) (mm) quartz 0-70 < anhedral detrital plagioclase 0-0 < anhedral detrital muscovite <0. anhedral platy, metamorphic chlorite <0. anhedral platy, metamorphic VEINS: No veins. 0 ADDITIONAL COMMENTS: Pyrite occurs in ovoid structures with felsic mineral(s). Some structures hollow and lined with euhedral pyrite and quartz. Relict bedding and cross-bedding in Piece CORE/SECTION 6
Core Photo. CORE DESCRIPTIONS VISUAL CORE DESCRIPTIONS, SITE A-1W message openfile IMAGES/1276A1W.PDF. MUDSTONE interbedded with GRAINSTONE
VISUAL CORE S, SITE 7 7A-W message openfile IMS/7AW.PDF Site 7 Hole A Core W Cored 7.0-800.0 mbsf 79 78 77 7 7 7 very very ACCEORIES FOILS GY/, GY/ G/, GY/ GY/, GY/ GY/, GY/ MUDSTONE interbedded with GRAINSTONE
More information& $ CORED mbsf SITE 932 HOLE A. Graphic Lith. Section Age. Sample. Disturb. Meter. Color. Description. Structure. CALCAREOUS CLAY and CLAY
SITE 932 HOLE A Meter 1_ 2_ 3_ 4_ 5_ 6 : 3 α IV.V.V a πt = π 4..-.V. Section Age 1 2 3 4 CC late Pleistocene \ Holocene CORE & & $ Disturb 1H Sample S S S S I M Color 1YR 5/3 2. 4/2 4/1 CORED.-6. mbsf
More informationFeet. SAND; clayey, fine grained; shells are common; rounded quartz grains. SHELLS; muddy; almost no sand, shells and fragments common
SAND; clayey, fine grained; shells are common; rounded quartz grains SHELLS; muddy; almost no sand, shells and fragments common SAND; back to medium to fine; has a mottled appearance and looks burrowed;
More informationFeet CLAY; silty, greenish gray and clayey fine sand; Color: 5Y 3/1
-. CLAY; silty, greenish gray and clayey fine sand; Color: Y /. -. SAND; fine-medium, clayey, with sandy clay layers; very abundant broken thin, tiny shells; shell hash at several horizons, heavily burrowed;
More informationCore Photo. Site 1111 Hole A Core 2R Rec. 0.73% mbsf
VISUAL CORE DESCRIPTIONS, SITE 1111 1 1111A-2R message openfile IMAGES/1111A2R.PDF 1111A-1R NO RECOVERY Site 1111 Hole A Core 2R Rec. 0.73% 10.1-19.7 mbsf GRAIN SIZE METERS 1 SECTION granule very coarse
More informationFeet. Cape May Core #51 Start depth: 240 ft Stop depth: 245 ft Recovery (ft): 5.1 ft Date: 3/21/94 Described by: JVB, KGM, CL. 5.
SAND; medium to fine sand with abundant silt, homogenous slightly mottled appearance; mica on outside, mostly quartz; few darks; peat layer.9 - ft; cnv - same as above; the last few cores are all the same;
More informationAppendix A: Core descriptions
Appendix A: Core descriptions Core: Tan0706 1 Water Depth: 2550m Gear: Piston Date Collected: 6/5/07 Date Described: 7/12/10 Description and Comments: 0-23 (2.5Y 6/4), light yellowish brown. Sandy silt.
More information_ ë Z= M. SITE 934 HOLE A CORE 1H CORED mbsf 934A-1H 1. Graphic Structure. Description. Lith.m
SITE 934 HOLE A CORE 1H CORED 0.0-4.3 mbsf 934A-1H 1 1-2 3 m _ ë Z= M 10YR 5/3 5GY 5/1 N1 CALCAREOUS CLAY, CLAY and SILTY CLAY WITH SILT LAMINAE Major Lithologies: The top 87 cm of Section 1 is composed
More informationCORED SITE 941 HOLE A. Graphic Lith. Section Age. Disturb. Sample. Meter. Color. Description. Structure. 10YR 5/3 To 2.
SITE 94 HOLE A eter mm : _ 3_ 4_ = α tv.v.v. a πj IΦ ----- ] Section Age a a a\ :.... 3 Holocene CORE {3 (3 {3 Disturb H Sample I Color 0YR 5/3. 6/ 5/ 4/ 5GY CORED 0.0-5.3 CALCAREOUS CLAY and CLAY mbsf
More informationSOUTH CERRO AZUL STRATIGRAPHIC SECTION. Upper Cerro Azul flow of the Servilleta Basalt (Tsbcau) Lower Sandlin unit (Tsl)
Figure A3-01 cobbles claysilt general grain size sand pebbles vf f m c vc SOUTH CERRO AZUL STRATIGRAPHIC SECTION Top at 18 m. Upper Cerro Azul flow of the Servilleta Basalt (Tsbcau) 15 Basalt: Very dark
More informationLog of Monitoring Well D58B
Project: Motiva - Monitoring Well and Soil Boring Data Project Location: Delaware City Refinery Project Number: 20240412.W1000 Log of Monitoring Well D58B Sheet 1 of 7 Date(s) Drilled Drilling Method Drill
More informationTable 174AX Bethany Beach
1 12-May-00 5-10 3.65 73 Sand; 2.2 ft contact, sandy silty clay Sinepuxent 2 12-May-00 10-15 4.20 84 Fine-very fine sand and clay Sinepuxent 3 12-May-00 15-20 3.60 72 Fine-very fine sand and clay Sinepuxent
More informationOWNER: Lone Star Cement Corporation DRILLER: R. L. Magette Well Drilling Corp. COUNTY: Norfolk (S. Norfolk). GEOLOGIC LOG. feet.
Lone Star Cement Corporation DRILLER: R. L. Magette Well Drilling Corp. COUNTY: Norfolk (S. Norfolk). W: 2111 C: 165 TOTAL DEPTH: 800' GEOLOGIC LOG Depth feet in 0-40 No Samples YORKTOWN FORMATION (40-360')
More informationGEOLOGIC LOG. sandy. coarse-grained, dark-green autochthonous glauconite; minor amount of sand-grade shell debris, foraminifers rare
OWNER: William E. Hackney o (Rivercliff Subdivision) DRILLER: Pittman wood & Metal Products Co. COUNTY: Nansemond (Driver) VDMR: WWCR: TOTAL DEPTH: 2092 173 607' GEOLOGIC LOG Depth in feet COLUMBIA GROUP
More informationVDMR #1306 WWCR #63 TOTAL DEPTH: 10ISO" OWNER: Bayberry Estates DRILLER: J. T. Ellington COUNTY: King George (Dahlgren) GEOLOGIC LOG No sample.
() DRILLER: J. T. Ellington COUNTY: King George (Dahlgren) VDMR WWCR #63 TOTAL DEPTH: 10ISO" GEOLOGIC LOG 0-240 No sample. Aquia Formation (240-300') 240-255 -255-270 270-285 285-300 Sand - dark-gray with
More informationSample photos and petrographic descriptions of core samples from the Norwegian continental margin basement
Sample photos and petrographic descriptions of core samples from the Norwegian continental margin basement Appendix 1 Petrophysical and thermal properties of pre-devonian basement rocks on the Norwegian
More informationSediment. Weathering: mechanical and chemical decomposition and disintegration of rock and minerals at the surface
Sediment Some basic terminology Weathering: mechanical and chemical decomposition and disintegration of rock and minerals at the surface Erosion: removal of weathered rock and minerals from one place to
More informationGEOLOGIC LOG Sand - orange-brown, slightly clayey; fine- to medium-grained, very well-sorted, subangular to subrounded; trace of feldspar
OWNER: Fred W. Haislip DRILLER: Douglas & Dickinson, Inc. COUNTY: Northumberland (Burgess) Depth in feet GEOLOGIC LOG VDMR: WWCR: TOTAL DEPTH: 2000 140 673' COLUMBIA GROUP (0-42') 0-10 Sand - orange-brown,
More informationData Repository item
Data Repository (B25407): Localities and descriptions of measured sections of study areas Table 1. Localities of the measured sedimentary sections in the NW Sichuan Basin Section Number Stratigraphy Locality
More informationUNIT DESCRIPTIONS: Artificial Fill, Undocumented (Afu): Locally derived sandy silt and silty sand, locally with clay and varying amounts of gravel and man-made debris. Abundant concrete rubble, in places
More informationMud Sand Gravel. Clastic Textures
Sed Rocks Self-Instruction Lab Name Geology 100 Harbor Section Please see the questions online before you begin. Sedimentary rocks are usually identified in the field by their stratification or layering,
More informationMud Sand Gravel. Clastic Textures
Sed Rocks Self-Instruction Lab Name Geology 100 Harbor Section Read the sedimentary rocks chapter before you start. Sedimentary rocks are usually identified in the field by their stratification or layering,
More informationSedimentary Rocks. Weathering. Mechanical & Chemical Weathering. Sediments. Lithification. Deposition. Transport. Erosion.
Lithification Sedimentary Rocks Sediments Deposition Transport Erosion Weathering Weathering The sediments that make up sedimentary rocks are produced by: Mechanical & Chemical Weathering Mechanical Weathering
More information17. CARBONATE SEDIMENTARY ROCKS FROM THE WESTERN PACIFIC: LEG 7, DEEP SEA DRILLING PROJECT
17. CARBONATE SEDIMENTARY ROCKS FROM THE WESTERN PACIFIC: LEG 7, DEEP SEA DRILLING PROJECT Ralph Moberly, Jr., Hawaii Institute of Geophysics, University of Hawaii, Honolulu, Hawaii and G. Ross Heath,
More informationCore Photo. CORE DESCRIPTIONS VISUAL CORE DESCRIPTIONS, SITE A-2R message openfile IMAGES/1136A2R.PDF 1136A-1R NO RECOVERY ACCESSORIES
VISUAL, SITE 1136 1 1136A-R message openfile IMAGES/1136AR.PDF Core Photo Site 1136 Hole A Core R Cored 4.7-14.4 mbsf 9METERS 8 7 6 5 4 3 1 SECTION 1 3 4 5 6 7 8 GRAPHIC LITH. BIOTURB. STRUCTURE ACCESSORIES
More informationu. S. Geological Survey,
VDMR Well No. Operator: Southwestern Oil and 'Gas Company Farm: Hagan Well No.: 1 Location: Wise County 9300' S. of 36 055') 600' E. of 82030,)approximate Elevation: 2500' Total Depth:3751' Drill'ing Comrilenced:
More informationDIAMOND DRILLING. CLAIM No, HOLE No, FOOTAGE DATE NOTE. NOTES: (i) # ios- 80 WORK PERFORMED BY: ASARCO EXPLORATION OF CANADA LIMITED
DIAMOND DRILLING 52A15NE8006 11 WOLF LAKE 010 AREA! WOLF LAKE REPORT No,: WORK PERFORMED BY: ASARCO EXPLORATION OF CANADA LIMITED CLAIM No, HOLE No, FOOTAGE DATE NOTE TB 49585H TB 495874 WR l WR 2 587.0
More informationPaleo Lab #4 - Sedimentary Environments
Paleo Lab #4 - Sedimentary Environments page - 1. CHARACTERISTICS OF SEDIMENT Grain size and grain shape: The sizes and shapes of sedimentary particles (grains) are modified considerably during their transportation
More informationTable DR 1: Description of the lithologic succession encountered by the Enkingen (SUBO 18) drill core.
DR20130138 G. Arp et al. SUPPLEMENTARY FILES (GSA Data Repository) Figure DR 1: Facies types of the Enkingen (SUBO 18) drill core. (A) Facies 1 clay-rich conglomeratic sandstone, 18.32-18.50 m depth. (B)
More information27 Figure 7 Poorly cleaved, massive, light-weathering Bomoseen graywacke outcrop located on Brandon Mountain Road. Figure 8 Photomicrograph of Bomoseen graywacke. Subangular, poorly sorted quartz grains
More informationESC102. Sedimentary Rocks. Our keys to the past. Monday, February 11, 13
ESC102 Sedimentary Rocks Our keys to the past Sedimentary Rocks Sedimentary rocks are rocks that form through the accumulation of sediment and the process of lithification. Lithification occurs after deposition
More informationJournal of Sedimentary Environments Published by Universidade do Estado do Rio de Janeiro SM2: doi: /jse SUPPLEMENTARY MATERIAL
Appendix 2 Citation: Bergamaschi, S., Duarte, A.C.F., Serrano, J.S., Figueiredo, A.M.B., Vasconcelos, L.C., Oliveira, R.M.A.G., Ade, M.V.B., Pinheiro, A.E.P.P., Martins, M.V.A., 2016. Regional outcrops
More informationGSA Data Repository Item
GSA Data Repository Item 2011097 Verdel, C., Wernicke, B. P. and Bowring, S. A., The Shuram and subsequent Ediacaran carbon isotope excursions from southwest Laurentia: Geological Society of America Bulletin
More informationMEASURED SECTIONS OF THE PENNSYLVANIAN TENSLEEP SANDSTONE, PRYOR AND BIG HORN MOUNTAINS, MONTANA
MEASURED SECTIONS OF THE PENNSYLVANIAN TENSLEEP SANDSTONE, PRYOR AND BIG HORN MOUNTAINS, MONTANA D.A. Lopez, S.W. VanDelinder, M.L. Hendricks, Shawn Reddish-Kuzara, C.W. Schwartz, and D.C. Bear Claw Montana
More informationClastic Textures. I. What is the sorting of sample numbers 60, 61, and 62? Answers on last page.
Sed Rock s Sel f-instruction N ame Geology 100 Harbor Secti on Sedimentary rocks are usually identified in the field by their stratification or layering, which originates by the successive deposition of
More informationIgneous and Metamorphic Rock Forming Minerals. Department of Geology Mr. Victor Tibane SGM 210_2013
Igneous and Metamorphic Rock Forming Minerals Department of Geology Mr. Victor Tibane 1 SGM 210_2013 Classification of sedimentary rocks Sedimentary rocks are products of weathered, fragmented or dissolved,
More informationWELL LOG. Siltstone - medium gray (N5) - massive, hard, carbonaceous and micaceous on bedding planes.
o o Operator: Farm: Well No: Location: Elevation: Total Depth: Drilling Commenced: Well Completed: Result: United Producing Company, Inc. Yukon Pocahontas Coal Co., Et Al 9-1674 Buchanan County 14,500'
More informationSediment and sedimentary rocks Sediment
Sediment and sedimentary rocks Sediment From sediments to sedimentary rocks (transportation, deposition, preservation and lithification) Types of sedimentary rocks (clastic, chemical and organic) Sedimentary
More informationRock Identification. Aphanitic Texture (fine grained) Individual crystals are so small that they are not visible to the naked eye
The Identification of Rocks This lab introduces the identification of igneous, sedimentary and metamorphic rocks based on mineralogy (composition) and texture. I. Classification of Igneous Rocks Textures
More informationModule 9 Sedimentary Rocks
Module 9 Sedimentary Rocks SEDIMENTARY ROCKS Rocks formed from material derived from preexisting rocks by surfacial processes followed by diagenesis There are two main classes of sedimentary rocks Clastic
More informationGeology 252, Historical Geology, California State University, Los Angeles - professor: Dr. Alessandro Grippo
LAB # 1 - CLASTIC ROCKS Background: - Mechanical and Chemical Weathering - Production of Clastic Sediment - Classification of Sediment according to size: Gravel, Sand, Silt, Clay - Erosion, Transportation
More informationLAB 2 IDENTIFYING MATERIALS FOR MAKING SOILS: ROCK AND PARENT MATERIALS
LAB 2 IDENTIFYING MATERIALS FOR MAKING SOILS: ROCK AND PARENT MATERIALS Learning outcomes The student is able to: 1. understand and identify rocks 2. understand and identify parent materials 3. recognize
More informationUnit 3. Unit 2. Organic. Sand. Clay. Silt. Diamict. Gravel
WR51 55 m E 69369 m N 2 : Massive, fine-grained sand. Some silt-rich layers. Limited oxidation. Interpreted as loess. 1 : Matrix-supported gravel. Medium to coarse-grained sand matrix. Subrounded clasts.
More informationIODP EXPEDITION 306: NORTH ATLANTIC CLIMATE II SITE U1314 SUMMARY
IODP EXPEDITION 306: NORTH ATLANTIC CLIMATE II SITE U1314 SUMMARY Hole U1314A Latitude: 56 21.883'N, Longitude: 27 53.309'W Hole U1314B Latitude: 56 21.896'N, Longitude: 27 53.311'W Hole U1314C Latitude:
More informationSedimentary Structures in Metamorphic Rocks
Maine Geologic Facts and Localities November, 2006 Primary Sedimentary Structures in Some Metamorphic Rocks Text by Thomas K. Weddle, Department of Agriculture, Conservation & Forestry 1 Photo by Thomas
More informationDELPET VINLAND BIG SPRING #1 DIAMOND DRILL CORE LOG
Location(NTS.): 2 M I 4 UTM Cood: N 5664039 E 572158 Total Depth: 1396.82m Core size:h.q SHEET# l Date: June 8/97 Spud date: May 25, 1997 Completed: Aug. 13, 1997 Logged by: Jamie Meyer I Roland Strickland
More informationAPPENDIX III. COMPOSITION AND SOURCE OF DETRITAL SAND LAYERS FROM THE GUAYMAS BASIN 1
APPENDIX III. COMPOSITION AND SOURCE OF DETRITAL SAND LAYERS FROM THE GUAYMAS BASIN J. Eduardo Aguayo> instituto Mexicano del Petróleo, Mexico, D.F., Mexico QAL 0 After: Geological chart, Instituto de
More informationUNIT 4 SEDIMENTARY ROCKS
UNIT 4 SEDIMENTARY ROCKS WHAT ARE SEDIMENTS Sediments are loose Earth materials (unconsolidated materials) such as sand which are transported by the action of water, wind, glacial ice and gravity. These
More informationStratigraphy and structure of the Ganson Hill area: northern Taconic Allochthon
University at Albany, State University of New York Scholars Archive Geology Theses and Dissertations Atmospheric and Environmental Sciences 1985 Stratigraphy and structure of the Ganson Hill area: northern
More informationSedimentary Rocks. Origin, Properties and Identification. Physical Geology GEOL 101 Lab Ray Rector - Instructor
Sedimentary Rocks Origin, Properties and Identification Physical Geology GEOL 101 Lab Ray Rector - Instructor Sedimentary Rock Origin and Identification Lab Pre-Lab Internet Link Resources 1) http://www.rockhounds.com/rockshop/rockkey/index.html
More informationHigh-resolution Sequence Stratigraphy of the Glauconitic Sandstone, Upper Mannville C Pool, Cessford Field: a Record of Evolving Accommodation
Page No. 069-1 High-resolution Sequence Stratigraphy of the Glauconitic Sandstone, Upper Mannville C Pool, Cessford Field: a Record of Evolving Accommodation Thérèse Lynch* and John Hopkins, Department
More informationLab 5: Sedimentary and metamorphic rocks. More sedimentary rocks Needed: Samples R18 R28 (Tubs 21 31), R33 (Tub 36) and S1 (Tub 94)
Geology 101 Name(s): Lab 5: Sedimentary and metamorphic rocks More sedimentary rocks Needed: Samples R18 R28 (Tubs 21 31), R33 (Tub 36) and S1 (Tub 94) 1. a. Sedimentary rocks are held together by cement,
More information32. GEOCHEMISTRY OF CARBON: DSDPLEG31
. GEOCHEMISTRY OF CARBON: DSDPLEG J. G. Erdman, K. S. Schorno, and R. S. Scalan, Phillips Petroleum Company, Bartlesville, Oklahoma INTRODUCTION Eleven core sections from Sites 99 and 0, on DSDP Leg in
More informationMetamorphism and Metamorphic Rocks Earth - Chapter Pearson Education, Inc.
Metamorphism and Metamorphic Rocks Earth - Chapter 8 Metamorphism Transition of one rock into another by temperatures and/or pressures unlike those in which it formed Metamorphic rocks are produced from:
More informationDATA REPOSITORY FIGURES AND TABLES
GSA Data Repository Item 2016322 Sweeney, K.E., and Roering, J.J., 2016, Rapid fluvial incision of a late Holocene lava flow: Insights from lidar, alluvial stratigraphy, and numerical modeling: GSA Bulletin,
More informationEPS 50 Lab 4: Sedimentary Rocks
Name: EPS 50 Lab 4: Sedimentary Rocks Grotzinger and Jordan, Chapter 5 Introduction In this lab we will classify sedimentary rocks and investigate the relationship between environmental conditions and
More informationSediments and Sedimentary Rocks
Sediments and Sedimentary Rocks (Shaping Earth s Surface, Part 2) Science 330 Summer 2005 What is a sedimentary rock? Products of mechanical and chemical weathering Account for about 5 percent of Earth
More informationSand. Sand is any eroded material (igneous, metamorphic or sedimentary) that has a grain size from 1/16 th to 2 millimeters in size.
Sedimentology 001 What is sedimentology? Sedimentology...encompasses the study of modern sediments such as sand [1], mud (silt) [2] andclay [3] and understanding the processes that deposit them.[4] It
More informationSedimentary Rocks. Origin, Properties and Identification. Geology Laboratory GEOL 101 Lab Ray Rector - Instructor
Sedimentary Rocks Origin, Properties and Identification Geology Laboratory GEOL 101 Lab Ray Rector - Instructor Sedimentary Rock Origin and Identification Lab Pre-Lab Internet Link Resources 1) http://www.rockhounds.com/rockshop/rockkey/index.html
More informationChapter 4. Eumeralla Formation Facies and Distribution
Chapter 4 Eumeralla Formation Facies and Distribution 4. EUMERALLA FORMATION FACIES 4.1 Previous Work The Eumeralla Formation thickens in a broad wedge towards its main depocentre in the southwestern Otway
More informationLITHOLOGY REPORT - Detailed -
(m) (m) Lithology Sample # Length 50 0.00 11.76 10 Casing Minor Interval: 0.00 0.54 10A Casing above ground (Air) 0.54 11.76 10G Casing through gravel or overburden (Ground) 11.76 40.80 1c Interbedded
More information1. Gravel-size 2. Sand-size 3. Silt-size 4. Clay-size 5. Microcrystalline 6. Macrocrystalline
Name: GEOL 101 - Physical Geology Lab Grade: SEDIMENTARY & METAMORPHIC ROCK CLASSIFICATION and IDENTIFICATION SEDIMENTARY PRE-ID SECTION To be completed before observing hand samples: I. Introduction &
More informationTP-1 N61E 0 DARK BROWN SANDY SILT (ML) stiff, wet with roots (Disturbed Surficial Soil) DEPTH (FEET) 5 REDDISH BROWN SANDSTONE intensely fractured, weak to friable, deeply weathered, tight (Franciscan
More informationAPPENDIX C SUBSURFACE EXPLORATIONS
APPENDIX C SUBSURFACE EXPLORATIONS 51-1-52-021 APPENDIX C SUBSURFACE EXPLORATIONS TABLE OF CONTENTS Page C.1. C.2. C.3. C.4. C.5. C.6. GENERAL...C-1 DRILLING PROCEDURES...C-1 SAMPLING PROCEDURES...C-2
More informationSITE 859 HOLE A CORE 1H CORED mbsf 59A-1H! 1 II 1 1 II. Graphic Lith. Section Age. Disturb. Sample. Meter. Color. Description.
TE 859 HOLE A CORE H CORED 0.0-.2 mbsf 59A-H! ection 5 :.0;!!!!!! CC Quaternary o 73 CO 2 5GY 3/2 LTY CLAY TO CLAYEY LT WTH DATOM ection and core catcher contain structureless grayish olive green (5GY
More informationMetamorphism: summary in haiku form
Metamorphism & Metamorphic Rocks Earth, Chapter 8 Metamorphism: summary in haiku form Shape-shifters in crust. Just add heat and/or pressure. Keep it solid please! What Is Metamorphism? Metamorphism means
More informationAPPENDIX VI. GEOCHEMISTRY OF CARBON: DSDP LEGS 22, 24, 26, 27, AND 28
APPENDIX VI. GEOCHEMISTRY OF CARBON: DSDP LEGS, 4, 6, 7, AND 8 J. G. Erdman, K. S. Schorno, and R. S. Scanlan, Phillips Petroleum Company, Bartlesville, Oklahoma INTRODUCTION A total of 8 samples from
More informationSedimentary Rocks. Origin, Properties and Identification. Physical Geology GEOL 100. Ray Rector - Instructor
Sedimentary Rocks Origin, Properties and Identification Physical Geology GEOL 100 Ray Rector - Instructor Sedimentary Rock Origin and Identification Lab Pre-Lab Internet Link Resources 1) http://www.rockhounds.com/rockshop/rockkey/index.html
More informationRock Identification Lab, 60 Points This is a BIG lab! Work carefully and thoroughly
Rock Identification Lab, 60 Points This is a BIG lab! Work carefully and thoroughly Name: Date: Period: Lab Skills and Objectives 1. You will examine, classify, and identify several samples of igneous,
More informationROCK CLASSIFICATION AND IDENTIFICATION
Name: Miramar College Grade: GEOL 101 - Physical Geology Laboratory SEDIMENTARY ROCK CLASSIFICATION AND IDENTIFICATION PRELAB SECTION To be completed before labs starts: I. Introduction & Purpose: The
More informationo - 399' ' ' ' ' T. D.
Ii I I' I: VDMRWellNo W-1142 Operator: J W Miloncus Farm: Browning Wynn Well No. : 1 Location: Lee County 3300' N of 36 042'30" 1800' E of 83005' approx Elevation: 1975' (reported altimeter elevation)
More informationCOMPOSITIONAL TERMS: FELSIC : light colored INTERMEDIATE : medium shades MAFIC : dark colored ULTRAMAFIC : rare (composition of the mantle)
GEOLOGY 306 Laboratory NAME: Instructor: TERRY J. BOROUGHS SECTION: Common Rocks (Chapter 2) For this assignment, you will require: a streak plate, glass plate, magnet, dilute hydrochloric (HCl) acid,
More informationSedimentology and Stratigraphy of Lower Smackover Tight Oil Carbonates: Key to Predictive Understanding of Reservoir Quality and Distribution
Integrated Reservoir Solutions Sedimentology and Stratigraphy of Lower Smackover Tight Oil Carbonates: Key to Predictive Understanding of Reservoir Quality and Distribution Roger J. Barnaby Presented at
More informationChapter 6 Pages of Earth s Past: Sedimentary Rocks
Chapter 6 Pages of Earth s Past: Sedimentary Rocks Introduction! Drilling into the bottom of the North Sea, we encounter: " Soft mud and loose sand, silt, pebbles, and shells. Then: " Similar materials
More informationSedimentary and Stratigraphic Analysis of the Viking Sand in the Edgerton/Wainwright Area, Central Alberta* By Russell Walz 1
Sedimentary and Stratigraphic Analysis of the Viking Sand in the Edgerton/Wainwright Area, Central Alberta* By Russell Walz 1 Search and Discovery Article #50030 (2006) Posted June 25, 2006 *Extended abstract
More informationHole 340-U1393A-1H Section 1, Top of Section: 0.0 CSF-A (m)
Hole 4-U9A-H Section, Top of Section:. CSF-A (m) Dark volcaniclastic coarse to very coarse sand, with rare granules (up to 4 mm), mainly andesitic lava with rare carbonate grains. Similar in composition
More informationSedimentary Environments Chapter 8
Sedimentary Environments Chapter 8 Does not contain complete lecture notes. To be used to help organize lecture notes and home/test studies. What is a sedimentary rock? Sedimentary rocks are products of
More informationName: Grade: GEOL Physical Geology Laboratory Sedimentaryand Metamorphic Rocks Lab #6
Name: GEOL 101 - Physical Geology Laboratory Sedimentaryand Metamorphic Rocks Lab #6 Grade: PRELAB SECTION To be completed before labs starts: I. Introduction & Purpose: The purpose of this laboratory
More informationSedimentary Rocks. All sedimentary rocks begin to form when existing rocks are broken down into sediments Sediments are mainly weathered debris
Rocks! Objectives Describe the major processes involved in the formation of sedimentary rock Distinguish between clastic sedimentary rocks and chemical sedimentary rocks Identify the features that are
More informationGUIDELINES ON THE DESCRIPTION AND CLASSIFICATION OF ROCKS OF THE TUEN MUN FORMATION
GUIDELINES ON THE DESCRIPTION AND CLASSIFICATION OF ROCKS OF THE TUEN MUN FORMATION Rod Sewell Hong Kong Geological Survey GEO/CEDD Objectives to review all known lithologies of the Tuen Mun based on literature
More informationFacies Cryptic description Depositional processes Depositional environments Very well sorted. Desert dunes. Migration of straight crested mega ripples
Very well sorted Travelled grate distance, effective sorting 5 medium-grained sandstone with well rounded grains; large scale high angle planar cross-beds. Migration of straight crested mega ripples Desert
More informationROCK IDENTIFICATION LAB
ROCK IDENTIFICATION LAB What type of rock is this? Where or how is it formed? Obsidian Extrusive Igneous Rock No crystals formed Glassy Very quick cooling molten rock (lava) What type of rock is this?
More informationIgneous Rocks. Sedimentary Rocks. Metamorphic Rocks
Name: Date: Igneous Rocks Igneous rocks form from the solidification of magma either below (intrusive igneous rocks) or above (extrusive igneous rocks) the Earth s surface. For example, the igneous rock
More informationSandstone Petrography
Description of sandstones in thin section In this week's lab, you will learn the basics of the description and interpretation of sandstones in thin section. For each sample, you should describe the grain
More informationFacies Analysis Of The Reservoir Rocks In The. Sylhet Trough, Bangladesh. Abstract
Facies Analysis Of The Reservoir Rocks In The Sylhet Trough, Bangladesh Joyanta Dutta Petroleum Geoscience Program, Department of Geology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
More informationLecture Outline Wednesday - Friday February 14-16, 2018
Lecture Outline Wednesday - Friday February 14-16, 2018 Quiz 2 scheduled for Friday Feb 23 (Interlude B, Chapters 6,7) Questions? Chapter 6 Pages of the Past: Sedimentary Rocks Key Points for today Be
More information=%REPORT RECONNAISSANCE OF CHISHOLM LAKE PROSPECT. October 25, 1977
=%REPORT ON FIELD RECONNAISSANCE OF CHISHOLM LAKE PROSPECT October 25, 1977 Bruce D. Vincent Imperial Oil Limited, Minerals - Coal, CALGARY, ALBERTA CHISHOLM LAKE PROSPECT Introduction The Chisholm Lake
More information, , INTERVAL SHEET WWCR 133. VDMR WELL NO.: Well No
Pa ge 1 INTERVAL SHEET VDMR WELL NO.: Well No. 1184 WWCR 133 Date 11/16/64 Sample Interval: fr om'--_o=-- to 640 PROP : Ditchley Water Works Total Depth_-64.:.0- COMP: Fedderoff Bros. COUNTY: Northumberland
More information16. DATA REPORT: TRACE ELEMENT GEOCHEMISTRY OF CENOZOIC COOL-WATER CARBONATES, SITES , GREAT AUSTRALIAN BIGHT 1
Hine, A.C., ary, D.A., and Malone, M.J. (Eds.) Proceedings of the Ocean Drilling Program, Scientific Results Volume 182 16. DATA REPORT: TRACE ELEMENT GEOCHEMISTRY OF CENOZOIC COOL-WATER CARBONATES, SITES
More informationI. CALCIUM-CARBONATE AND SAND-FRACTION ANALYSIS OF CENOZOIC AND MESOZOIC SEDIMENTS FROM THE MOROCCAN BASIN
I. CALCIUM-CARBONATE AND SAND-FRACTION ANALYSIS OF CENOZOIC AND MESOZOIC SEDIMENTS FROM THE MOROCCAN BASIN Marthe Melguen, Centre Océanologique de Bretagne, BP, 9 Brest Cedex, France INODUCTION As the
More informationChapter 8 Lecture. Earth: An Introduction to Physical Geology. Twelfth Edition. Metamorphism. Rocks. Tarbuck and Lutgens Pearson Education, Inc.
Chapter 8 Lecture Earth: An Introduction to Physical Geology Twelfth Edition Metamorphism and dmetamorphic Rocks Tarbuck and Lutgens Chapter 8 Metamorphic Rocks What Is Metamorphism? Metamorphism means
More informationLithology: Olivine-rich gabbro medium grained Observer: Texture: granular Ave. grain size: medium grained [345] Shape Habit Comments
THIN SECTION LABEL ID: 179-1105A-1R-2-W 88/91-TSB-TSS Piece no.: #02 TS no.: Igneous Medium-grained olivine gabbronorite; plagioclase chadacryst within orthopyroxene oikocryst; rims of olivine and clinopyroxene
More informationEngineering Geology and Seismology. Geological Identification of Rocks
Lecture # 6 Engineering Geology and Seismology Geological Identification of Rocks Instructor: Prof. Dr. Attaullah Shah Department of Civil Engineering City University of Science and IT Peshawar 1 Characterizing
More informationOoids, Example #1 Pennsylvania, Union Furnace outcrop Black River Formation
UNon-skeletal grains UOoids Ooids, Example #1 This oolitic grainstone occurs in the Black River Formation of Pennsylvania. The ooids in this thin section have not been extensively micritized and the original
More informationCORED mbsf. Description CLAY WITH FORAMINIFERS
SITE 948 HOLE B Meter 1_ 2_ 3_ Section 1 2 3 Age late leitocene CORE $ B B B B B B B B B B Diturb 1H cd Sample S M Color 6/2 CORED 0.0-4.0 mbf Decription CLAY WITH FORAMINIFERS Moderately bioturbated,
More informationGEOLOGY. Subject : GEOLOGY (For under graduate student.) Paper No. : Paper 02 Introduction to Geology 02
GEOLOGY Subject : GEOLOGY (For under graduate student.) Paper No. : Paper 02 Introduction to Geology 02 Topic No. & Title : 56 Structure of Sedimentary Rocks Frequently Asked Questions FAQ s Que 01. What
More informationYour teacher will show you a sample or diagram of each, and show you a settling column. Draw these, and label your diagrams (8 pts) Ungraded:
From Sand to Stone: How do we recognize and interpret sedimentary rocks in the rock record? (Based closely on the University of Washington ESS 101 Lab 5: Sedimentary Rocks) Introduction: This lab consists
More informationGEOL.3250 Geology for Engineers Sedimentary & Metamorphic Rocks
GEOL.3250 Geology for Engineers Sedimentary & Metamorphic Rocks Name I. Introduction The bulk of the earth's crust is composed of relatively few minerals. These can be mixed together, however, to give
More informationMEMO. TO: Dennis Lapoint CC: FROM: Eriaan Wirosono DATE: April, 20 th 2014 SUBJECT: Exploration activity report March-April 2014_EW
TO: Dennis Lapoint CC: FROM: Eriaan Wirosono DATE: April, 20 th 2014 SUBJECT: Exploration activity report March-April 2014_EW MEMO 1. Highlights and Productivity Overview pan sampling on target Areas 1
More information