Site 1071 Hole A Core 1H Cored 0.0-5.1 mbsf 1071A-1H
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION METERS SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION
SILTY SAND DCP Olive gray to dark olive gray (5Y 4/2 to 5Y 3/2), medium to fine
1 SILTY SAND containing abundant silt to sand-sized quartz and DCP mica and sand to granule-sized shell and lithic fragments; large SILTY CLAY clast lies between 58 and 65 cm in Section 2.
Shell hash with very coarse fragments occurs in Section 1 between 24 and 29 cm.
2 2 1 3
4 4 HS
CC PAL SITE 1071 195
SITE 1071 196 Site 1071 Hole A Core 2H Cored 5.1-7.9 mbsf 1071A-2H 1071A-3H
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
CLAYEY SILT and SANDY CLAY
Very dark gray to dark gray (10YR 4/1 to 5YR 4/1) CLAYEY SILT
1 composed of quartz, mica, and lithic fragments, and SANDY SILT in Section 1 between 0 and 62 cm.
SANDY SILT and CLAYEY SILT 2 IW Medium to thickly interbeded very fine-grained SANDY SILT and HS dark brown (10YR 3/3) CLAYEY SILT between 62 cm in Section 1
2 2 and 127 cm in Section 2; localized hydrotroilite staining. DCP
CC PAL
Site 1071 Hole A Core 3H Cored 7.9-12.0 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY CLAY and CLAYEY SILT
Dark gray (5YR 4/1) SILTY CLAY, interbedded with dark gray
1 (10YR 4/1) very thinly bedded CLAYEY SILT. CLAYEY SILTS are DCP common from 63 cm to 150 cm in Section 1, less common from 18 to 95 cm in Section 2. SILTY CLAY is composed of quartz mica and lithic fragments.
2 3
2 DCP
IW HS 3
4 CC PAL
Site 1071 Hole A Core 4H Cored 12.0-16.2 mbsf 1071A-4H
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY CLAY, SILT, and SAND
Dark gray (5YR 4/1) SILTY CLAY thinly to medium interbedded
1 and laminated with SILT and fine SAND. SILTY CLAY contains rare sand-filled burrows; SILT and fine SAND beds have irregular bottoms and tops and locally exhibit grading and/or disruption by bioturbation.
2 4 2
DCP IW 3 HS
4 CC PAL SITE 1071 197
SITE 1071 198 Site 1071 Hole A Core 5H Cored 16.2-25.7 mbsf 1071A-5H
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
CLAY and SAND
Dark gray (10YR 4/1) CLAY thinly to medium interbedded with
1 dark gray (5Y 3/1) fine SAND between 0 and 113 cm in Section 1. DCP Most sand beds have sharp/erosional basal contacts and normal grading. Sand beds contain quartz and micas. SAND and CLAY
Dark gray (5Y 3/1) fine SAND medium to thickly interbedded with dark gray (5Y 3/1) CLAY between 113 cm in Section 1 and 119 2 cm in Section 2. 2
SAND
Dark gray (5Y 3/1) very fine quartz SAND from 119 cm in Section 2 to the bottom of the core with abundant mud clasts in Sections 4 to 7, possibly flow-in. SANDS are very well sorted, angular to subrounded, and contain some glauconite and muscovite. 3
4 Minor disturbed (?) clay bed at ~75 cm in Section 4. 5 4
6 5
8 6 7
CC PAL
Site 1071 Hole A Core 6H Cored 25.7-26.8 mbsf 1071A-6H 1071A-7H 1071A-8X
cobble pebble granule sand silt clay v f mcv STRUCTURE CORE AND SECTION SAMPLE
ACCESSORIES DESCRIPTION DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SAND
1 Olive gray (5Y 3/2), fine-grained SAND occurs in Section 1 (0 to
6 29 cm). Sand is most likely disturbed.
HS CLAY and SAND
CC IW Dark brownish gray (10YR 3/1) CLAY, in Section 1 (29 to 74 cm), PAL is interbedded with thin bedded (0.5 to 4 cm thick), normally graded, fine grained SANDS. Sands have sharp bases and gradational tops. SAND, SILTY CLAY Dark brownish gray (10YR 3/1), fine- to coarse-grained SAND occurs in Section CC. At Interval 0 to 10 cm sand is fine- to medium-grained; at Intervals 10 to 17 cm and 20 to 22 cm sand is medium- to coarse-grained. Sand contains granule-sized lithic clasts. Mica is scattered through Section CC. An interval of SILTY CLAY occurs at 17 to 20 cm.
Site 1071 Hole A Core 7H Cored 26.8-36.3 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
CLAY 7 1 Olive gray (5Y 2.5/1) CLAY in Section 1 contains shell fragments PAL up to 2 cm long. Clay is very disturbed due to extrusion.
Site 1071 Hole A Core 8X Cored 36.3-39.9 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
8 CC PAL SAND Medium grayish brown (10YR 4/1) to olive greenish gray (5Y 3/1), very disturbed, fine-grained SAND with shell fragments and lithic granules. SITE 1071 199
SITE 1071 200 1071A-9X NO RECOVERY 1071A-10X 1071B-2X 1071B-3X
Site 1071 Hole A Core 10X Cored 49.3-51.9 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SS SILTY CLAY 1 SS 10 Dark gray (7.5YR 4/1) SILTY CLAY with scattered quartzose HS pebbles and granules and shells fragments (bivalves); very rare CC IW mica-rich (muscovite), fine sand- and silt-filled burrows (1.5 cm in IW diameter) at 24 cm in Section 1. PAL
1071B-1W WASH CORE; undescribed
Site 1071 Hole B Core 2X Cored 39.8-49.2 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION METERS SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION
DCP CLAY and SAND
Dark gray (10YR 4/1) homogeneous CLAY (0-11 cm, Section 1) DCP 1 and fine SAND (9-11 cm, Section 1). SAND contains well-rounded DCP quartz pebbles (up to 2 cm in diameter) and shell fragments; 2 discrete burrows are filled with very fine quartz SAND. These DCP sediments may have been washed in from above. IW Dark greenish gray (5GY 4/1) CLAY (11-47 cm, Section 1), containing discrete burrows filled with fine mica-bearing quartz 2 HS DCP SAND, shell hash, and pebbles. Gradational lower contact with 2 PAL dark greenish gray (5GY 4/1) fine angular quartz SAND (47-72 CC cm, Section 1) with minor glauconite, pyrite, and sharp-based thin interbeds of CLAY. Reddish gray (10R 5/1) CLAY (72-140 cm, Section 1) with minor glauconite and pyrite (at 72-84 cm and107-113 cm, Section 1) and medium dark gray (N4/4) CLAY and fine SAND (83-84 cm, Section 1); contains discrete burrows filled with fine quartz SAND.
All sharp contacts are burrowed.
Site 1071 Hole B Core 3X Cored 49.2-52.9 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION METERS SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION
1 HS CLAY and SILT 3
CC IW Brownish gray (5YR 4/1) CLAY (0-24 cm, Section 1); contains rare PAL burrows filled with quartz SILT; lower contact is sharp and pinched, suggesting possible biscuiting. Alternating laminae of brownish gray (5YR 4/1) and weak red (10R 5/2) fissile CLAY (24-38 cm, Section 1) contains a few quartz SILT laminae and rare burrows filled with SILT.
Gas void occurs between 38 and 44 cm (Section 1).
Site 1071 Hole B Core 4X Cored 52.9-58.4 mbsf 1071B-4X 1071B-5X
cobble pebble granule sand silt clay v f mcv ACCESSORIES
ICHNOFOSSILS DESCRIPTION STRUCTURE BIOTURBATION CORE AND SECTION METERS SAMPLE DISTURBANCE
HS SILTY CLAY and CLAY 1 4 SS Very dark gray (5YR 3/1) fissile SILTY CLAY (0-47 cm, Section 1) CC DCP PAL contains scattered muscovite; very dark gray (5YR 3/1) homogenous CLAY (47-52.5 cm, Section 1) with bioturbated lower contact; and weak red (10R 4/2) homogeneous CLAY (52.5-56 cm, Section 1).
Site 1071 Hole B Core 5X Cored 58.4-67.8 mbsf
cobble pebble granule sand silt clay v f mcv CORE AND SECTION SAMPLE DESCRIPTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS DISTURBANCE
SILTY CLAY
Dark gray (5YR 4/1) micaceous SILTY CLAY (Section 1 and 0-17
1 cm, Section 2); contains rare burrows filled with fine SAND.
SILTY CLAY and SAND DCP 2 Brownish gray (5YR 4/1) medium bedded SILTY CLAY 2 interbedded with brownish gray (5YR 5/1) fine to medium SAND with glauconite and mica (17-140 cm, Section 2).
IW SILTY CLAY and SAND SS Medium gray (10YR 5/1) SAND (0-2 cm, Section 3) with
5 glauconite and biotite; sharp lower contact. Dusky yellow green 3 (5GY 5/2) homogeneous SILTY CLAY (from 2 cm, Section 3 4 through 62 cm, Section 5) with scattered small lithic pebbles and granules; granule-sized bone fragment (50 cm, Section 5). No discrete burrows, but possible diffuse burrow mottling. IW HS
SS 4
6 5
SAND and SILTY CLAY
CC Dark gray (10YR 4/1) fine to medium SAND interbedded with PAL dusky yellow green (5GY 5/2) SILTY CLAY (62 cm, Section 5 through Section CC). Sand content increases from 50% to 70% below 82 cm, Section 5. SITE 1071 201
SITE 1071 202 Site 1071 Hole B Core 6X Cored 67.8-77.4 mbsf 1071B-6X 1071C-2X
cobble pebble granule sand silt clay v f mcv CORE AND SECTION SAMPLE DESCRIPTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS DISTURBANCE
SAND and SILTY CLAY 6
CC SS PAL Light and dark gray (10YR 7/2 and10YR 4/1), fine to medium glauconitic SAND thinly interbedded with gray (10YR 5/1) SILTY CLAY (Section CC); interbeds are 1-7 cm thick.
SAND at 18 cm is very micaceous (with both biotite and muscovite), and contains abundant medium to coarse organic fragments.
1071C-1X NO RECOVERY
Site 1071 Hole C Core 2X Cored 58.4-67.8 mbsf
cobble pebble granule sand silt clay v f mcv
CORE AND SECTION DESCRIPTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS SAMPLE DISTURBANCE
SILTY CLAY and SAND
Dark gray (10YR 4/1), homogeneous, mica-bearing SILTY CLAY
1 (Section 1 through 95 cm, Section 2). Thinly interbedded SILTY CLAY and SAND between 24 and 38 cm in Section 2; rare lignite (81 cm, Section 2); mica and silt content increases down section. Fine to medium quartz SAND (95-100 cm, Section 2) with shell fragments; sharp erosional base at 100 cm, Section 2.
2 2
DCP SILTY CLAY
Dark olive gray (5YR 3/2), homogeneous SILTY CLAY (100 cm, 2 IW Section 2 through 31 cm, Section CC); scattered mm-sized pyrite HS nodules.
3 SS
4 4
6 CC PAL SAND and SILTY CLAY Dark olive gray (5YR 3/2) fine to medium SAND thinly interbedded with SILTY CLAY (31-34 cm, Section CC); approximately 50% of each lithology present; shell fragments scattered throughout.
Site 1071 Hole C Core 3X Cored 67.8-77.4 mbsf 1071C-3X 1071C-6X 1071C-7X
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION METERS SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION
1 DCP SANDY CLAY and SAND 3 Dark grayish brown to weak red (10YR 4/2 - 2.5 YR 4/2) SANDY
CC PAL CLAY (65 -80%) interbedded with light gray (10YR 6/1) fine SAND (35 - 20%) (Section 1 through 16 cm, Section CC).
Greenish gray (5Y 6/1) medium to coarse glauconitic quartz SAND (16-20 cm, Section CC).
1071C-4X NO RECOVERY
1071C-5X NO RECOVERY
Site 1071 Hole C Core 6X Cored 96.2-105.6 mbsf
cobble pebble granule sand silt clay v f mcv
CORE AND SECTION DESCRIPTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS SAMPLE DISTURBANCE
HS SANDY CLAY and SAND 1 SS 6 Dark gray (5Y 4/1) SANDY CLAY (65%) interbedded with greenish to dark gray (5GY 6/1 - 5Y 4/1) fine micaceous and glauconitic
CC SAND (35%); well-rounded quartz pebbles 5-6 mm in diameter IW (52, 57 cm, Section 1). PAL
Site 1071 Hole C Core 7X Cored 105.6-114.9 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
7 IW SANDY CLAY and SAND CC PAL Dark greenish gray (5GY 4/1) SAND (35%) interbedded with dark gray (5Y 4/1) fine micaceous and glauconitic SANDY CLAY (65%) throughout Section CC; basal contacts of sand layers are disrupted. Discrete sand-filled burrows occur between 0-12 cm. SITE 1071 203
SITE 1071 204 Site 1071 Hole C Core 8X Cored 114.9-124.5 mbsf 1071C-8X 1071C-9X
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
HS SILTY SAND and CLAYEY SILT DCP Dark olive gray (5Y 3/2) SILTY SAND interbedded with CLAYEY
1 SS SILT (0-61 cm, Section 1); slumped with sharp, inclined basal 8 DCP contact.
DCP CLAYEY SILT, SILTY CLAY, SANDY SILT and SAND
CC IW Dark olive gray (5Y 3/2), thin bedded CLAYEY SILT and SILTY PAL CLAY (61-80 cm, Section 1); SAND-filled burrow at 64 cm, thin SAND interbed at 71 cm (Section 1). Dark olive gray (5Y 3/2) SANDY SILT (80-98 cm, Section 1) with lenticular beds of fine SAND and SAND-filled burrows.
Dark gray (5Y 3/2) SANDY SILT thinly interbedded with CLAYEY SILT (98-110 cm, Section 1); beds are 2-3 cm thick. SILTY CLAY thinly interbedded with fine SAND (110-121 cm, Section 1); beds are 1 cm thick and have sharp top and bottom contacts.
Dark olive gray (5Y 3/2) thinly bedded SILTY CLAY and CLAYEY SILT (Section CC); lenticular olive gray (5Y 5/2) fine SAND interbeds (2-12 cm).
Site 1071 Hole C Core 9X Cored 124.5-134.0 mbsf
cobble pebble granule sand silt clay v f mcv STRUCTURE CORE AND SECTION SAMPLE
ACCESSORIES DESCRIPTION DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SANDY SILT and SAND
Dark grayish brown to grayish brown (2.5Y 4/2 to 2.5Y 5/2)
1 SANDY SILT; occasional thin to lenticular beds of fine SAND and incipient carbonate nodules (Section 1 through 79 cm, Section 2); SS color changes to olive gray and grayish olive (5Y 4/1 and 10Y 4/2) at top of Section 2.
2 2
9 SILTY CLAY and SAND DCP SS Olive gray to grayish olive (5Y 4/1 to 10Y 4/2) SILTY CLAY with DCP thin tabular and lenticular interbeds of fine SAND (79 -128 cm, Section 2); irregular contacts between SILTY CLAY and SAND (115-118 cm, Section 2). SANDY SILT and SAND 3 Grayish olive (10Y 4/2) SANDY SILT and SAND (128 cm, Section 4 2 through 30 cm, Section CC); fining-upward sequences from DCP sand to silt ~2-9 cm thick (0-133 cm, Section 3).
CC PAL
Site 1071 Hole C Core 10X Cored 134.0-143.5 mbsf 1071C-10X 1071C-11X
cobble pebble granule sand silt clay v f mcv ACCESSORIES
ICHNOFOSSILS DESCRIPTION STRUCTURE BIOTURBATION CORE AND SECTION METERS SAMPLE DISTURBANCE
DCP SAND 10 CC SS HS Olive gray (5Y 3/2) fine SAND (0-2 cm, Section CC); dusky blue PAL green (5BG 3/2) fine SAND (2-34 cm, Section CC) with 75% glauconite, 25% quartz.
Site 1071 Hole C Core 11X Cored 143.5-148.5 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY CLAY
Dark greenish gray (5Y 4/1) SILTY CLAY (0-52 cm, Section 1); SS 1 rare pyrite nodules and quartz pebbles; drilling slurry (0-4 cm, Section 1). SILTY SANDY CLAY
Dark greenish gray (5Y 4/1) SILTY SANDY CLAY (52-110 cm, Section 1); discontinuous sandy zones (not beds) disturbed by drilling. 2 SILTY CLAY and SAND 2
Dark greenish gray (5Y 4/1) SILTY CLAY with minor SAND (110 cm, Section 1 through Section CC). 11 3
4
IW 4 CC 6 PAL SITE 1071 205
SITE 1071 206 Site 1071 Hole C Core 12X Cored 148.5-152.9 mbsf 1071C-12X
cobble pebble granule sand silt clay v f mc v STRUCTURE CORE AND SECTION SAMPLE
ACCESSORIES DESCRIPTION DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SS SILTY CLAY and SANDY SILT Drilling slurry (0-5cm, Section 1)
1 Dark greenish gray (5Y 4/1), homogeneous SILTY CLAY (25 cm, Section 1 through Section CC) with scattered olive (5Y 5/4) pyrite nodules; SANDY SILT (5-25 cm, Section 1).
2 2 12
IW HS 3
4 4 CC
Site 1071 Hole C Core 13X Cored 152.9-157.9 mbsf 1071C-13X
cobble pebble granule sand silt clay v f mcv ACCESSORIES
ICHNOFOSSILS DESCRIPTION STRUCTURE BIOTURBATION CORE AND SECTION METERS SAMPLE DISTURBANCE
SILTY CLAY SS Dark gray (5Y 4/1), homogenous SILTY CLAY (Section 1 through 100 cm, Section 2) with thin, sharp-based bed of lithic clasts, shell 1 fragments and slightly sandier matrix (20 cm, Section 1).
2 2 13
SILT and CLAYEY SILT
Dark gray (5Y 4/1), homogeneous SILT (100 cm, Section 2 HS through 13 cm, Section 3; 84 cm, Section 3 through Section CC); dark gray (5Y 4/1), homogeneous CLAYEY SILT. 3
4
CC PAL SITE 1071 207
SITE 1071 208 Site 1071 Hole C Core 14X Cored 157.9-162.4 mbsf 1071C-14X
cobble pebble granule sand silt clay v f mcv ACCESSORIES
ICHNOFOSSILS DESCRIPTION STRUCTURE BIOTURBATION CORE AND SECTION METERS SAMPLE DISTURBANCE
SILT and SILTY CLAY Very dark gray (5Y 3/1) SILT (0-80 cm, Section 1); gradational lower contact with very dark gray (5Y 3/1) SILTY CLAY (80 cm, Section 1 through 29 cm, Section 2); large chert clast 5 cm in 1 diameter (0-4 cm, Section 1).
SILTY CLAY, SILT and CLAY
SS Very dark gray (5Y 3/1) thickly interbedded SILTY CLAY, SILT, 2 and CLAY 29-143 cm, Section 2); very dark gray (5Y 3/1) thinly 2 interbedded SILT and SILTY CLAY (0-53 cm, Section 3).
14 DCP
HS
CLAY and SILTY CLAY 3
4 Very dark gray (2.5Y 3/0) CLAY (53-150 cm, Section 3; Section CC); very dark gray (2.5Y 3/0) SILTY CLAY (Section 4). Wood fragment occurs at 8-9 cm (Section CC). 4 CC PAL
Site 1071 Hole C Core 15X Cored 162.4-171.8 mbsf 1071C-15X
cobble pebble granule sand silt clay v f mcv CORE AND SECTION SAMPLE DESCRIPTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS DISTURBANCE
SILTY CLAY and SAND
Dark gray (5Y 4/1), homogeneous, SILTY CLAY with localized
1 discrete sand-filled burrows and scattered shell fragments. Pyritized wood fragment (8 mm) occurs at 140 cm (Section 1).
Dark gray (5Y 4/1) SILTY CLAY and fine SAND are thinly interbedded between 112 - 120 cm (Section 2).
Diffuse 3 - 5 cm thick olive gray (5Y 4/2) bands occur through Sections 3-6. 2 2 3
4 SS SS 15 4
6 5
IW
8 6 7 CC PAL SITE 1071 209
SITE 1071 210 Site 1071 Hole C Core 16X Cored 171.8-181.3 mbsf 1071C-16X 1071C-18X
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY CLAY
Homogeneous, dark gray (5Y 4/1), diffusely mottled SILTY CLAY SS 1 (0-74 cm, Section 1) with scattered shells and shell fragments. SANDY CLAY and SAND
Dark gray (5Y 4/1) SANDY CLAY and dark gray (5Y 4/1) fine, micaceous SAND (74 cm, Section 1 through 17 cm, Section 2) with some discrete sand-filled burrows. Large grayish brown
16 DCP (10YR 5/2) siderite(?) nodule occurs at 120 cm (Section 1). 2 MUDDY SAND and SANDY MUD 2
Dark gray (5Y 4/1) MUDDY SAND interbedded with gray (5Y 5/1) SANDY MUD (17-143 cm, Section 2); discrete sand-filled burrows DCP are common but unidentifiable.
3 Olive gray (5Y 3/2) glauconitic, poorly sorted, medium to pebbly HS MUDDY SAND (143 cm, Section 2 through Section CC); beds are
CC DCP normally graded. Most granules and pebbles are concentrated in PAL Section CC.
1071C-17X NO RECOVERY
Site 1071 Hole C Core 18X Cored 190.8-200.1 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION SAMPLE CORE AND SECTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS DISTURBANCE 18
CC DCP GRAVEL SS PAL Dark gray (10YR 4/1) well-sorted, glauconitic, granule and fine pebble GRAVEL (0-8.5 cm (Section CC); includes bivalve fragments. SILTY SAND
Dark gray (10YR 4/1), fine, glauconitic, pebbly SILTY SAND (8.5 cm -16 cm, Section CC).
Site 1071 Hole C Core 19X Cored 200.1-209.5 mbsf 1071C-19X 1071C-20X
cobble pebble granule sand silt clay v f mcv
CORE AND SECTION DESCRIPTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS SAMPLE DISTURBANCE
HS SILTY and MUDDY SAND SS 1 Dark gray (5Y 4/1) glauconitic, fine SILTY SAND from 0-73 cm
19 (Section 1); grading down to dark gray (5Y 4/1) MUDDY SAND DCP with scattered quartzose granules and small pebbles (< 1cm) from 73 to 105 cm (Section 1). CC IW PAL
Site 1071 Hole C Core 20X Cored 209.5-219.0 mbsf
cobble pebble granule sand silt clay v f mc v ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS SAMPLE CORE AND SECTION DESCRIPTION DISTURBANCE
SILTY SAND and SILTY CLAY
Dark gray (5Y 4/1), fine to very fine, micaceous, glauconitic SILTY
1 SAND (50-70%) thinly interbedded with dark gray (5Y 4/1) SILTY CLAY (Sections 1 and 2) with scattered bivalve fragments. Stratification is disrupted by bioturbation; discrete, unindentifiable sand-filled burrows cut clays. Percentages of SILTY SAND/SILTY CLAY vary downcore: 70/30, 0-65 cm, Section 1; 50/50, 65-121 cm, Section 1; 20/80, 121 cm, Section 1 through 56 cm, Section 2; 40/60, 56-72 cm, Section 2; 15/85, 72-109 cm, Section 2; 2 50/50, 109-125 cm, Section 2; 15/85, 125-150 cm, Section 2). 2 SS 20
SILTY CLAY and SILTY SAND
Dark gray (5Y 4/1) SILTY CLAY and micaceous, glauconitic, very poorly sorted SILTY SAND (Section 3). Bedding is highly disrupted 3 by bioturbation; discrete sand-filled burrows are common. 4 Scattered shell fragments, granules, and pebbles occur throughout. Percentage of SILTY SAND decreases from 50% to 20% twice (0-116 cm and 116-150 cm, Section 3). Color changes to HS dark olive gray (5Y 3/2) from 116 to 150 cm, Section 3.
4 SILTY SAND
Dark greenish gray (5G 3/1), glauconitic, very poorly sorted SILTY
CC SAND (0-59 cm, Section 4 and Section CC) with scattered angular PAL chert (?) granules and pebbles, shell fragments, and possible mudclasts. SITE 1071 211
SITE 1071 212 1071C-21X NO RECOVERY 1071C-22X 1071C-23X
Site 1071 Hole C Core 22X Cored 228.4-237.7 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY SAND and SILTY CLAY
Dark greenish gray (5GY 4/1) poorly sorted SILTY SAND
1 interbedded with dark gray (5Y 4/3) micaceous and glauconitic SILTY CLAY (Section 1 through Section CC). Stratification is SS highly disrupted by bioturbation, and there are some discrete 22 sand-filled burrows. Decayed wood (1.5 cm long) occurs at 87 cm (Section 1). IW 2 HS
2 CC PAL
Site 1071 Hole C Core 23X Cored 237.7-247.0 mbsf
cobble pebble granule sand silt v f mc v
CORE AND SECTION clay ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION
METERS SAMPLE DESCRIPTION DISTURBANCE
SILTY SAND and SILTY CLAY
Dark gray (5Y 4/1) poorly sorted, micaceous, glauconitic SILTY
1 SAND with dark gray SILTY CLAY (0-140 cm, Section 1). Percentages of SILTY SAND/SILTY CLAY vary downcore: 80/20, SS 0-63 cm; 60/30, 63-120 cm; 80/20, 120-140 cm. 23
IW SILTY SAND 2 Dark gray (5Y 4/1) poorly sorted SILTY SAND (0-50 cm, Section 2) 2 CC HS with scattered shell fragments. PAL SILTY SAND and SILTY CLAY
Dark gray (5Y4/1) poorly sorted SILTY SAND thinly interbedded with SILTY CLAY (50-59 cm, Section 2).
Site 1071 Hole C Core 24X Cored 247.0-251.6 mbsf 1071C-24X 1071C-25X
cobble pebble granule sand silt clay v f mcv CORE AND SECTION SAMPLE ACCESSORIES DESCRIPTION ICHNOFOSSILS STRUCTURE BIOTURBATION METERS DISTURBANCE
SILTY SAND 1 SS 24 Dark gray (5Y 4/1) poorly sorted, micaceous SILTY SAND (Sections 1 and CC). SILTY CLAY clasts, 0.5 to 1 cm in diameter, CC HS occur from 38 through 80 cm (Section 1) and at 8 and 12 cm (Section PAL CC).
Site 1071 Hole C Core 25X Cored 251.6-256.4 mbsf
cobble pebble granule sand silt v f mc v
CORE AND SECTION clay ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION
METERS SAMPLE DESCRIPTION DISTURBANCE
SILTY CLAY and SANDY SILT
Dark gray (5Y 4/1) micaceous SILTY CLAY (drilling slurry) (0-4 cm, SS 1 Section 1) with shell fragments and gravel. Shells have microborings. Dark gray (5Y 4/1) homogeneous, micaceous SANDY SILT (4 cm, Section 1 through 5 cm, Section 2); sandstone clast or concretion occurs at the top of Section 2. DCP DCP CLAY, SANDY SILT and SILT
2 Dark gray (5Y 4/1) homogeneous, micaceous CLAY (5 cm,
2 Section 2 through 92 cm, Section 3) with thin interbeds of SANDY SILT (31-35 cm, Section 2) and thin lenses or beds of SILT scattered throughout. Small wood fragments are found within SANDY SILT at 31-35 cm (Section 2) and within SILT interbed at
25 43-44 cm (Section 3). IW 3 SS 4 SILTY CLAY and SANDY SILT
Dark gray (5Y 4/1) SILTY CLAY (92-150 cm, Section 3) becoming increasingly silty downcore; discrete burrows are filled with SANDY SILT. Glauconite and plant remains present in SANDY SILT.
4 SANDY CLAY, CLAYEY SAND and PEBBLY GLAUCONITIC DCP SAND
Dark gray (5Y 4/1) homogeneous SANDY CLAY (0-58 cm, CC HS PAL Section 4). Coarsens downward to dark gray (5Y 4/1) fine, glauconitic CLAYEY SAND from 58-99 cm (Section 4) and dusky green (5G 3/2) medium to pebbly glauconitic SAND (Section CC). Pebbles in Section CC are typically 2-4 mm in diameter. SITE 1071 213
SITE 1071 214 S ite 1071 Hole C Core 26X Cored 256.4-256.9 mbsf 1071C-26X 1071D-1R 1071D-5R
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
1 GLAUCONITIC PEBBLY SANDSTONE 26 DCP
Greenish gray (5G 1/6 ), homogeneous, medium glauconitic pebbly SANDSTONE (Section CC). Pebbles are typically 2-4 cm in diameter and are variegated dark gray (N3), very light gray (N8), grayish black (N2) and yellowish gray (5Y 7/2).
Site 1071 Hole D Core 1R Cored 0.0-9.1 mbsf
cobble pebble granule sand silt clay v f mcv ACCESSORIES
ICHNOFOSSILS DESCRIPTION STRUCTURE BIOTURBATION CORE AND SECTION METERS SAMPLE DISTURBANCE
SILTY CLAY 1 1 SS IW Dark gray (5YR 4/1) micaceous SILTY CLAY. Staining by CC HS hydrotroilite occurs along possible bedding planes at 16-19 cm and 30-42 cm (Section 1). PAL
1071D-2R NO RECOVERY
1071D-3R NO RECOVERY
1071D-4R NO RECOVERY
Site 1071 Hole D Core 5R Cored 38.0-47.7 mbsf
cobble pebble granule sand silt clay v f mc v ACCESSORIES
ICHNOFOSSILS DESCRIPTION STRUCTURE BIOTURBATION CORE AND SECTION METERS SAMPLE DISTURBANCE 1 5 SS SILTY CLAY CC SS IW Dark gray (5Y 4/1) micaceous SILTY CLAY (Section 1) contains scattered discrete burrows filled with fine sand. Color in lowermost PAL 1.5 cm is a variegated reddish gray (5YR 4/2).
Site 1071 Hole D Core 6R Cored 47.7-57.4 mbsf 1071D-6R 1071D-7R 1071D-8R
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY CLAY 1 6 SS Dark gray (5YR 4/1), slightly micaceous SILTY CLAY with variegated layers dark reddish gray (5YR 4/2) in color (Section 1). Thin, very fine sand laminae occur at 3 cm, 18 cm, and 27 cm CC IW (Section 1). PAL
Site 1071 Hole D Core 7R Cored 57.4-62.4 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
1 SILTY CLAY 7 SS CC IW Dark gray (5YR 4/1) slightly micaceous SILTY CLAY. PAL
Site 1071 Hole D Core 8R Cored 62.4-66.9 mbsf
cobble pebble granule sand silt v f mcv
CORE AND SECTION clay ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION SAMPLE METERS DESCRIPTION DISTURBANCE
SILTY CLAY and SANDY CLAY IW 1 8 SS Gray (5Y 5/1) SILTY CLAY (Section 1), which contains dark gray (5Y 4/1) layers of SANDY CLAY at 0-4 cm, 6-9 cm and 33-34 cm CC PAL (Section 1). SITE 1071 215
SITE 1071 216 Site 1071 Hole F Core 1R Cored 252.0-261.4 mbsf 1071F-1R 1071F-2R
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SANDY MUD SS Dark gray (5Y 4/1) slightly micaceous SANDY MUD (0-28 cm, Section 1) with gradational lower contact. 1 SS MUDDY SAND
Dark gray (5Y 4/1), slightly micaceous MUDDY SAND (28 cm,
1 IW Section 1 through Section 3). HS 2 2 3
CC PAL
Site 1071 Hole F Core 2R Cored 261.4-270.7 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION METERS SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION
1 SS MUDDY SAND 2 DCP CC SS Dark gray (5Y 4/1), micaceous MUDDY SAND (0-8 cm, Section 1). HS SILTY CLAY IW PAL Very dark gray (5Y 3/1) SILTY CLAY (8-38 cm, Section 1) with thin, organic detritus-rich beds, some of which contain pebbles. A pyrite-cemented, coarse-grained quartzose sand lens occurs at 29 cm (Section 1).
1071F-3R NO RECOVERY 1071F-6R 1071F-7R
1071F-4R NO RECOVERY
1071F-5R NO RECOVERY
Site 1071 Hole A Core 6H Cored 25.7-26.8 mbsf
cobble pebble granule sand silt v f mc v
clay ACCESSORIES DESCRIPTION STRUCTURE METERS SAMPLE CORE AND SECTION ICHNOFOSSILS BIOTURBATION DISTURBANCE
SAND
1 Olive gray (5Y 3/2), fine-grained SAND occurs in Section 1 (0 to
6 29 cm). Sand is most likely disturbed.
HS CLAY and SAND
CC IW Dark brownish gray (10YR 3/1) CLAY, in Section 1 (29 to 74 cm), is interbedded with thin bedded (0.5 to 4 cm thick), normally PAL graded, fine grained SANDS. Sands have sharp bases and gradational tops. SAND, SILTY CLAY Dark brownish gray (10YR 3/1), fine- to coarse-grained SAND occurs in Section CC. At Interval 0 to 10 cm sand is fine- to medium-grained; at Intervals 10 to 17 cm and 20 to 22 cm sand is medium- to coarse-grained. Sand contains granule-sized lithic clasts. Mica is scattered through Section CC. An interval of SILTY CLAY occurs at 17 to 20 cm.
Site 1071 Hole F Core 7R Cored 329.6-339.0 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
MUDDY SAND and SANDY MUD
1 Dark gray (5Y 4/1) slightly micaceous MUDDY SAND thinly SS interbedded with SANDY MUD (Sections 1 and 2). Proportion of 7 MUDDY SAND/SANDY MUD changes slightly downcore (80/20 HS from 3-91 cm, Section 1; 85/15 from 0-67 cm, Section 2). A large IW (5 cm) sandstone clast occurs in the upper 3 cm of Section 1; it 2 DCP may have been carried downhole by drilling. CC PAL SITE 1071 217
SITE 1071 218 Site 1071 Hole F Core 8R Cored 339.0-348.5 mbsf 1071F-8R 1071F-9R
cobble pebble granule sand silt clay v f mc v DESCRIPTION CORE AND SECTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS SAMPLE DISTURBANCE
IW MUDDY SAND 1 8 Dark gray (10YR 4/1) slightly micaceous, very fine- to fine-grained SS MUDDY SAND (10-99 cm, Section 1).
CC PAL
Site 1071 Hole F Core 9R Cored 348.5-357.9 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
DCP MUDDY SAND 1 Dark gray (10YR 4/1) slightly micaceous, carbonaceous, very fine-grained MUDDY SAND (Sections 1 through 3). Lighter-colored bands of concretionary carbonate occur in addition to carbonate nodules in Sections 1 and 2. Possible cross-lamination occurs at
2 15-18 cm and 37-38 cm (Section 1). 9 HS IW 2
3 SS
DCP
CC PAL
Site 1071 Hole F Core 10R Cored 357.9-367.4 mbsf 1071F-10R
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE CORE AND SECTION METERS SAMPLE ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION
MUDDY SAND
Dark gray (10YR 4/1), very fine, slightly micaceous MUDDY SAND.
1 Shell fragments, quartz pebbles, organic fragments are scattered throughout. A large clast composed of cemented sand, wood SS fragments and black organic material occurs in the uppermost 3 cm, and may have been carried down by drilling. MUDDY SAND AND SILTY CLAY
Color-banded dark gray (10YR 4/1) and olive (5Y 5/3) slightly 2 micaceous interbedded MUDDY SAND and SILTY CLAY. The top
2 of this interval has a sharp contact coated with organic fragments.
Several normally graded beds occur, with granules or pebbles at 10 their bases. The olive bands (containing siderite or dolomite) are 1 DCP to 3 cm thick, spaced 2 to 5 cm apart and cemented. They generally occur at the top of graded beds.
From 42 to 76 cm in Section 3, one very fine-grained, slightly DCP micaceous MUDDY SAND interval occurs with several Teichichnus 3 burrows. 4 DCP IW DCP 4 DCP CC SITE 1071 219
SITE 1071 220 Site 1071 Hole F Core 11R Cored 367.4-376.9 mbsf 1071F-11R 1071F-12R
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
SILTY CLAY and SANDY MUD SS Olive (5Y 4/3) SILTY CLAY (50%) and SANDY MUD (50%) with
1 scattered coarse grains and granules of quartz (0-14 cm, 147-150 cm, Section 1). Both intervals have been highly disturbed by drilling. SILTY CLAY
Olive (5Y 4/3) SILTY CLAY (14-147 cm, Section1), commonly 11 2 cemented by carbonate. Lighter-colored carbonate-rich bands (~1 2 cm thick) occur throughout. Cemented intervals have faint HS laminae and thin (~1 cm ) graded beds. Rare discrete burrows IW may be Teichichnus. Black organic matter is common throughout the core, but is concentrated at several intervals. 3 MUDDY SAND
Olive (5Y 4/3) MUDDY SAND (Section 2); sand is very fine to CC PAL fine-grained. Black organic fragments are common throughout the section. SILTY CLAY and SANDY MUD
Olive (5Y 4/3), slightly micaceous SILTY CLAY (80%) and SANDY MUD (20%) (Section 3). Black organic fragments are common throughout the section. Possible cross laminae occur between 11-14 cm (Section 3).
Site 1071 Hole F Core 12R Cored 376.9-386.3 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS 2
12 CC SS SILTY CLAY PAL Dark gray (5Y 4/1) slightly micaceous SILTY CLAY (Section 1).
Site 1071 Hole F Core 13R Cored 386.3-395.8 mbsf 1071F-13R 1071F-14R 1071F-15R 1071F-16R
cobble pebble granule sand silt clay v f mcv DESCRIPTION CORE AND SECTION ACCESSORIES ICHNOFOSSILS STRUCTURE BIOTURBATION METERS SAMPLE DISTURBANCE
13 CC PAL SILTY CLAY HS Dark gray (5Y 4/1) slightly micaceous SILTY CLAY (0-5 cm, Section CC).
Site 1071 Hole F Core 14R Cored 395.8-405.2 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
CC 14 HS SILTY CLAY PAL Dark gray (5Y 4/1) slightly micaceous SILTY CLAY (0-7 cm, Section CC).
Site 1071 Hole F Core 15R Cored 405.2-414.8 mbsf
cobble pebble granule sand silt v f mcv clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES DISTURBANCE ICHNOFOSSILS BIOTURBATION METERS
1 HS SILTY CLAY 15
CC PAL Dark gray (5Y 4/1) slightly micaceous SILTY CLAY (Section 1) includes two grayish brown (10YR 5/2) siderite bands 0.5 cm thick at 26 and 33 cm.
Site 1071 Hole F Core 16R Cored 414.8-424.2 mbsf
cobble pebble granule sand silt v f mc v clay DESCRIPTION STRUCTURE SAMPLE CORE AND SECTION ACCESSORIES ICHNOFOSSILS BIOTURBATION METERS DISTURBANCE
CC 16 DCP SILTSTONE
Gray (N5) pebbly SILTSTONE. Some discrete, unidentified
burrows in upper 7 cm are filled with coarse-grained sand and SITE 1071 rounded to subangular pebbles. An Ophiomorpha spans the core horizontally at 6-7 cm. The lower 8 cm includes 3 thin (0.5 cm) coarse, sandy layers and a small undefined burrow filled with medium-grained sand. 221