COLOR
Cored 0.0-9.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 1H
ACCESSORIES
HOLE A
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
1055A-1H
REMARKS
SILTY CLAY
1
lt gy GN
3
2
2
dk gn GY
..
dk ye GN
gn GY
..
lt ol GY
1
4
dk gn GY
..
4
6
General Description:
This core contains dark greenish gray (5GY 4/1)
SILTY CLAY. The color is quite variagated and
mottled, and a pale red (5R 6/2) interval is
present in Section 5. Open burrows are
abundant throughout core, often containing
foraminifer sands and pteropods in silty clay.
Small (1-3 cm) pteropod-rich layers often have
irregular contacts due to severe bioturbation.
SS
dk gn GY
5
pal RD
SS
6
dk gn GY
8
7
SS
CC
PAL
..
dk gn GY
lt ol GY
lt GY
SITE 1055
371
COLOR
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Cored 0.0-4.5 mbsf
REMARKS
1
..
SILTY CLAY and CLAY
SS
med gy GN
IW
mlt gn GY
1
2
2
3
IW
4
CC
mdk gy GN
lt OL
SS med gy OL
..
..
SS
PAL
General Description:
This core contains light grayish green (5GY 5/2)
SILTY CLAY and CLAY. Abundant burrows and
bioturbation throughout the core. Top of the core
is a soupy, moderate brown (2.5Y 5/3) layer.
Hollow burrows are present until Section 3, where
the fillings contain FORAMINIFER SAND.
Several sections gradually coarsen to a
FORAMINIFER SILTY CLAY. Section 3 is
marked by two distinctive pale red (10R 6/2)
layers and two pteropod-rich layers.
1055B-1H
SITE 1055
372
SITE 1055 HOLE B CORE 1H
COLOR
Cored 4.5-14.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 2H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055 HOLE B
1055B-2H
REMARKS
SILTY CLAY
1
dk gn GY
IW
2
2
vpl RD
dk gn GY
3
IW
4
..
..
lt GY
General Description:
This core contains olive gray (10GY 5/2) to dark
greenish gray (10Y 4/2) SILTY CLAY. Thin (2-3
cm) color laminae are abundant throughout the
core. The dominant lithology is commonly
interbedded with foram sands and pteropod
layers with fining upward beds. Moderate to
strong bioturbation produces irregular color and
lithologic contacts. Fossil fragments and pyrite
stains are disseminated throughout the core.
4
2
IW
dk gn GY
6
5
IW
6
IW
8
7
mlt gn GY
CC
PAL
SITE 1055
373
COLOR
Cored 14.0-23.5 mbsf
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
CORE 3H
IW
dsk ye GN
3
2
2
SS
IW
SS
ol GN
mlt gn GY
4
mlt GY
4
3
IW
mlt gn GY
5
8
IW
SS
10
CC
7
IW
SS
6
6
REMARKS
SILTY CLAY and FORAMINIFER SILT WITH
CLAY
1
METERS
HOLE B
mlt GY
..
dk gn GY
SS
PAL
General Description:
This core contains light greenish gray (10Y 4/1)
SILTY CLAY and dark greenish gray (10Y 5/2)
FORAMINIFER SILT WITH CLAY. Moderate to
severe bioturbation, fossil fragments, and worm
burrows are prevalent throughout the core.
Abrupt pteropod layers are also common in
middle and base of core. SILTY CLAY
dominates the top of the core and is
interbedded with a FORAMINIFER SILT WITH
CLAY.
1055B-3H
SITE 1055
374
SITE 1055
1055B-4H
COLOR
Cored 23.5-33.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 4H
ACCESSORIES
HOLE B
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
REMARKS
1
SILTY NANNOFOSSIL CLAY
lt ol GN
lt GY
2
2
lt ol BR
IW
3
dk ol GY
..
4
4
4
SS
General Description:
This core contains light olive gray (5Y 5/2) and
light bluish gray (3GY 5/1) SILTY
NANNOFOSSIL CLAY. Varying amounts of silt,
clay, foraminifers, and diatoms are present
throughout core. Shell fragments and filled
burrows are abundant in several sections, and a
scoured contact is present in Section 5.
mlt gn GY
..
6
5
mlt gn GY
SS
..
6
IW
8
lt gn GY
7
IW
mlt gn GY
10
CC
PAL
SITE 1055
375
COLOR
Cored 33.0-42.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 5H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
HOLE B
REMARKS
1
SILTY CLAY
2
2
ol GN
SS
IW
..
ol GN
mlt bl
.. GY
3
ol GN
..
..
4
4
5
IW
SS
6
ol GN
5
IW
6
IW
gn GY
SS
7
8
gn GY
CC
General Description:
This core contains light bluish gray (5GY 5/0.5) to
olive green (10Y 5/4) SILTY CLAY. The
dominant lithology is interbedded with coarser
intervals of FORAMINIFER SILTY CLAYS with
sharp and scoured contacts. Fossil fragments are
abundant throughout the core, and several small
(1-4 cm) pteropod layers are present. Fining
upward beds are present at the base of the core.
In Section 6 the SILTY CLAY lithology increases
in clay content, grading to a CLAY WITH SILT.
1055B-5H
SITE 1055
376
SITE 1055
COLOR
Cored 42.5-52.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 6H
ACCESSORIES
HOLE B
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
REMARKS
SILTY NANNOFOSSIL CLAY
1
..
1055B-6H
med GY
med ol GY
SS
SS
3
2
2
lt gy BF
mlt bl GY
4
6
4
General Description:
This core is an olive gray (5Y 3/2) SILTY
NANNOFOSSIL CLAY. The dominant lithology is
interbedded with medium-sized (20-30 cm) beds
of FORAMINIFER SILTY CLAY. Several
coarsening-fining beds are present near base of
core with scoured contacts. Abundant shell
fragments are found throughout the core.
Bioturbation is moderate to severe, creating fine
color laminae and mottles in several sections.
SS
6
5
mlt ol GY
..
mlt gn GY
6
8
7
SS
SS
CC
mlt bl GY
Many sharp, medium-sized (5-10 cm) color
bands throughout Section 6.
mlt gn GY
..
PAL
SITE 1055
377
1
SS
SS
REMARKS
dk gn GY
lt GY
2
2
COLOR
Cored 52.0-61.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 7H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
HOLE B
3
dk gn GY
4
7
4
6
5
lt gn GY
SS
SS
lt gn BR
6
7
8
CC
IW
PAL
lt bl GY
lt gn.. BR
lt gn BR
SILTY CLAY and NANNOFOSSIL SILTY CLAY
General Description:
This core contains light (5GY 8/1) to moderate
greenish gray (5GY 6/1) SILTY CLAY and light
greenish gray (5GY 8/1) NANNOFOSSIL SILTY
CLAY. Several coarse beds of SILT WITH
FORAMINIFERS are present. In Section 1 the
dominant lithology is interbedded with a
medium-sized (47 cm) bed of light gray (10Y 3/1)
NANNOFOSSIL OOZE. Fossil fragments,
pteropod beds, and gas expansion are common
throughout the core.
Section 4, 55-70 cm. Light greenish gray (10Y
7/1) SILT. Ripple marks at 65 and 68 cm.
Moderate bioturbation with pteropod fragments.
1055B-7H
SITE 1055
378
SITE 1055
COLOR
Cored 61.5-71.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 8H
ACCESSORIES
HOLE B
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
1055B-8H
REMARKS
1
CLAY WITH NANNOFOSSILS
med ol BR
2
2
mlt gn GY
3
IW
med gy OL
8
4
4
SS
General Description:
This core contains dark greenish gray (10Y 5/1)
CLAY WITH NANNOFOSSILS. Variable
amounts of nannofossils and clay are present
throughout the core with gradational contacts
between major lithologies. There are few
apparent variations in grain size. The
nannofossil content peaks in Section 6, forming
a light bluish gray (5B 7/1)
NANNOFOSSIL-CLAY MIXED SEDIMENT,
returning to a CLAY WITH NANNOFOSSILS in
Section 7.
5
6
pal bl GY
6
8
SS
7
IW
10
CC
PAL
SITE 1055
379
COLOR
Cored 71.0-80.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 9H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
HOLE B
REMARKS
1
SILTY CLAY
3
2
2
med bl GY
4
4
9
SS
SS
Section 4. Alternating laminae (>1 cm) of SILTY
CLAY and CLAY.
5
6
GY
IW
med bl GY
6
8
7
med ol BF
med gn GY
10
CC
PAL
General Description:
This core contains bluish gray (5B 5/1) SILTY
CLAY. Several medium-sized (10-30 cm) fining
and coarsening beds with gradational and
scoured contacts are present. Fossil fragments
are sparse to common throughout Sections 1-4.
The upper lithology is interbedded with two
intervals of grayish blue green (5 BG 5/2) SILT
with Chondrites ichnofossils. Lower sections
characterized by NANNOFOSSIL-CLAY MIXED
SEDIMENT with sharp and gradational
coarsening beds.
1055B-9H
SITE 1055
380
SITE 1055
1055B-10H
COLOR
Cored 80.5-90.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 10H
ACCESSORIES
HOLE B
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
REMARKS
1
NANNOFOSSIL-CLAY MIXED SEDIMENT
2
2
mlt gn GY
3
SS
4
General Description:
This core contains light greenish gray (5GY 8/1)
to olive gray (5Y 4/1) NANNOFOSSIL-CLAY
MIXED SEDIMENT. Commonly interbedded
with SILTY CLAY and small to medium (3-15
cm) beds of SILTY CLAY WITH
FORAMINIFERS. Pteropod and shell fragments
are abundant in Section 3. Pyrite stains are
disseminated throughout core.
10
4
med ol GY
5
6
6
IW
med ol GY
10
CC
7
8
mdk gn GY
PAL
dk gn GY
SITE 1055
381
COLOR
Cored 90.0-99.5 mbsf
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
CORE 11H
REMARKS
1
METERS
HOLE B
dsk ye GN
2
dsk ye GN
2
3
dsk ye GN
dsk ye GN
4
4
11
med gy GN
General Description:
This core contains dusky yellow green (5GY 5/2)
to light greenish gray (10Y 7/1)
NANNOFOSSIL-CLAY MIXED SEDIMENT
WITH SILT. Extensive color mottling is present
throughout core due to severe bioturbation. The
dominant lithology is commonly interbedded
with coarse beds of SILTY CLAY. Relative
proportions of clay, nannofossils, and silt vary
by 10% in all sections.
5
dsk ye GN
..
dsk ye GN
6
6
NANNOFOSSIL-CLAY MIXED SEDIMENT
WITH SILT
SS
lt gn GY
7
8
8
10
IW
CC
PAL
Section 7, 81-98 cm. Alternating thin (< 3 cm)
color laminae, ranging from light olive gray (5GY
6/1) to moderate reddish olive gray (7.5GY 5/0).
1055B-11H
SITE 1055
382
SITE 1055
1055B-12H
COLOR
Cored 99.5-109.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 12H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
HOLE B
REMARKS
NANNOFOSSIL-CLAY MIXED SEDIMENT
WITH SILT
2
1
METERS
SITE 1055
2
3
lt gn GY
6
5
12
4
4
General Description:
This core contains light (10Y 7/1) to dark
greenish gray (10Y 5/1) NANNOFOSSIL-CLAY
MIXED SEDIMENT WITH SILT. Several
sections are marked by abrupt coarse intervals
with sharp basal and upper contacts, grading
from a SILTY CLAY to a SILT WITH
FORAMINIFERS. Commonly the top contact is
abrupt and the basal contact gradational. The
core contains many large gas voids due to gas
expansion.
med ol GN
7
8
6
lt gn GY
IW
SS
dk gn GY
8
10
lt gn GY
CC
PAL
SITE 1055
383
2
COLOR
Cored 109.0-118.5 mbsf
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
CORE 13H
REMARKS
..
1
METERS
HOLE B
SILTY CLAY
SS
pal gn GY
..
2
3
lt GY
mlt GY
4
4
5
13
med gn GY
SS
SS
pal gy OL
6
6
IW
8
7
mdk ol GY
8
10
CC 9
dk gn GY
PAL
General Description:
This core contains greenish (5GY 6/1) to dark
greenish gray (5GY 4/1) SILTY CLAY. The
dominant lithology is overlain by a light greenish
gray (10Y 7/1) NANNOFOSSIL OOZE WITH
CLAY in Sections 1-2. Several coarse intervals
are present throughout the core, commonly with
sharp, irregular contacts. Thin (<2 cm) coarse
intervals of light olive gray (5Y 5/2) SILTY CLAY
are commonly associated with burrow fills.
1055B-13H
SITE 1055
384
SITE 1055
REMARKS
2
dk ol GN
dk ol GN
3
4
dk ol GY
..
dk ol GY
14
ol GY
5
2
4
1055B-14H
COLOR
Cored 118.5-128.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 14H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
HOLE B
1
METERS
SITE 1055
CLAY WITH SILT
General Description:
This core contains olive gray (5Y 4/1) CLAY
WITH SILT. The dominant lithology is typically
massive, structureless, and monochromatic
throughout the core. Silt content increases in
Sections 2-3, becoming a SILTY CLAY. A few
grain size variations are present in Sections 1-3.
The first appearance of silica-rich burrow fillings
occurs in Section 3. Shell fragments and filled
burrows are common in Sections 1-5, and large
gas voids are present throughout the core.
6
6
8
mdk ol GY
7
IW
CC
10
8
dk ol GY
dk ol GY
PAL
SITE 1055
385
COLOR
Cored 0.0-8.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 1H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
HOLE C
REMARKS
..
1
SILTY CLAY
SS
med gn GY
3
2
2
dk gn GY
SS
4
1
4
SS
med br GY
lt ol GY
med ol GY
5
6
8
6
mlt ol GY
CC
PAL
med gn GY
General Description:
This core contains greenish gray (5G 6/1) SILTY
CLAY. The dominant lithology is interbedded with
a brownish gray (5YR 4/1) CLAYEY SILT WITH
NANNOFOSSILS in Sections 3 and 4. Several
gradational coarsening-fining sequences are
present in Sections 3-5. Beds rich in shell
fragments and pteropods occur at 1H-3, 50 cm;
1H-3, 145 cm; 1H-4, 137 cm; and 1H-6, 25 cm.
1055C-1H
SITE 1055
386
SITE 1055
1055C-2H
COLOR
Cored 8.5-18.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 2H
ACCESSORIES
HOLE C
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
REMARKS
1
SILTY CLAY
med ol GY
2
2
3
med gn GY
4
General Description:
This core contains greenish gray (5G 6/1) SILTY
CLAY. Several coarsening-fining beds with SILT
and sharp, irregular contacts are present
throughout the core, especially in Section 2. The
dominant lithology is interbedded with a greenish
gray (5G 5/1) CLAYEY SILT WITH
NANNOFOSSILS in Section 5. Burrows and shell
fragments are occur throughout the core.
2
In Section 3 several pale red (10R 6/2) laminae
are present.
4
..
mlt gn GY
5
6
6
8
gn GY
med ol GY
7
SS
mlt ol GY
CC
SITE 1055
387
COLOR
Cored 18.0-27.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 3H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
HOLE C
REMARKS
1
SILTY CLAY
dk gn GY
3
2
2
4
4
3
med gn GY
6
5
6
dk gn GY
7
8
CC
General Description:
This core contains dark greenish gray (5GY 4/1)
SILTY CLAY. The dominant lithology is massive,
structureless, and monochromatic. The core is
heavily disturbed by flow-in from 100 cm in
Section 1 to the base of the core. Several
gradational coarsening-fining beds are present
from Section 4 to 7.
1055C-3H
SITE 1055
388
SITE 1055
1055C-4H
COLOR
Cored 27.5-37.0 mbsf
SAMPLES
CORE DISTURBANCE
CORE 4H
ACCESSORIES
HOLE C
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
SITE 1055
REMARKS
1
SILTY CLAY
med ol GY
..
2
2
lt ol GY
..
3
lt ol GY
General description:
This core contains light (5Y 6/1) to dark (5Y 3/1)
olive gray SILTY CLAY. The darker laminae
commonly have increased amounts of SILT with
gradational contacts. Upper 105 cm in Section 1
is very disturbed. Pyritized burrows and shell
fragments are scattered throughout the core.
4
med ol GY
5
4
4
mlt ol GY
..
6
6
8
mdk ol GY
7
mlt ol GY
med ol GY
CC
Section 5 contains several dark olive gray (5Y
3/1) SILT laminae in CLAY.
PAL
SITE 1055
389
COLOR
Cored 37.0-46.5 mbsf
SAMPLES
CORE DISTURBANCE
CORE 5H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
HOLE C
REMARKS
SILTY CLAY AND CLAYEY SILT
1
..
2
mdk ol GY
3
2
5
4
4
mlt ol GY
10
CC
7
8
6
5
6
med ol GY
mlt ol GY
..
mlt ol GY
med gn GY
..
General description:
This core contains light olive gray (5Y 6/1) to
olive gray (5Y 4/1) SILTY CLAY and CLAYEY
SILT beds, with gradational contacts between
lithologies. Pale red coloration occurs in
Sections 2-3. At 105 cm in Section 6, a fining
upwards bed contains silt laminae with an
abrupt basal contact. Shell fragments are
disseminated throughout the core.
1055C-5H
SITE 1055
390
SITE 1055
COLOR
SAMPLES
Cored 46.5-56.0 mbsf
CORE DISTRURBANCE
Core 6H
ACCESSORIES
PHYSICAL STRUCTURES
Hole C
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Site 1055
1055C-6H
REMARKS
1
SILTY CLAY and CLAYEY SILT
2
2
SS
SS
XRD med bl GY
3
med gn GY
mlt gn GY
4
6
4
General Description:
This core contains light (5G 8/1) to dark
greenish gray (5G 4/1) SILTY CLAY.
Lithology interbedded with a light greenish gray
(5G 8/1) CLAYEY SILT in Sections 2-3. In the
upper sections there are several gradational
contacts with a well-sorted greenish gray (5G
6/1) FORAMINIFER SAND. In Sections 5-6,
greenish gray (5G 5/1) SILTY CLAYS are
interbedded with a light gray (N7)
NANNOFOSSIL OOZE. Several gradational
coarse intervals occur at the base of the core.
med ol GY
5
6
SS
lt GY
8
6
XRD
7
med gn GY
SS
CC
PAL
mdk gn GY
10
SITE 1055
391
COLOR
Cored 56.0-65.5 mbsf
SAMPLES
CORE DISTURBANCE
Core 7H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Hole C
REMARKS
1
SILTY CLAY
2
2
med gn GY
3
SS
SS
4
7
4
5
6
10
CC
7
6
mlt gn GY
8
PAL
General description:
This core contains greenish gray (5G 6/1) SILTY
CLAY. Several coarser layers throughout the
core contain SILT and shell fragments with
gradational contacts. The dominant lithology is
generally massive, structureless, and
monochromatic.
1055C-7H
SITE 1055
392
Site 1055
COLOR
Cored 65.5-75.0 mbsf
SAMPLES
CORE DISTURBANCE
Core 8H
ACCESSORIES
Hole C
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
METERS
CORE AND SECTION
Site 1055
1055C-8H
REMARKS
1
SILTY NANNOFOSSIL CLAY and SILTY CLAY
lt ye GY
3
2
2
General description:
This core contains light yellowish gray (5Y 8/1)
SILTY NANNOFOSSIL CLAY and greenish gray
(5G 6/1) SILTY CLAY. Color mottles are
common throughout the core. Intervals of
greenish gray (5G 5/1) SILT WITH
FORAMINIFER SAND are present within the
SILTY CLAY.
med ol GN
4
4
8
..
..
5
6
In Section 6 there are four individual scoured
contacts.
7
8
6
med gn GY
mdk gn GY
10
CC
PAL
SITE 1055
393
COLOR
Cored 75.0-82.5 mbsf
SAMPLES
CORE DISTURBANCE
Core 9H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Hole C
REMARKS
1
CLAYEY SILT and CLAY WITH SILT
med ol GN
med gn GY
General description:
This core contains greenish gray (5G 6/1)
CLAYEY SILT. The dominant lithology contains
several thin (3-5 cm) beds of well-sorted SILTY
FORAMINIFER SAND. In Sections 5-6 the
lithology becomes a light bluish gray (5B 7/1)
CLAY WITH SILT.
mlt ol GN
9
3
2
2
SS
4
4
med gn GY
SS
med ol GN
..
6
5
med gn GY
CC
SS
PAL
mlt bl GY
In Section 4 there is a scoured contact present
within the CLAYEY SILT.
1055C-9H
SITE 1055
394
Site 1055
COLOR
Cored 82.5-92.0 mbsf
SAMPLES
CORE DISTURBANCE
Core 10H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Hole C
1
METERS
Site 1055
REMARKS
2
SILTY CLAY
med gn GY
3
2
..
General Description:
This core contains moderate to dark greenish
gray (10Y 6/1) SILTY CLAY interbedded with a
light bluish gray (5B 5/1) CLAYEY SILT in
Section 3. All sediments throughout the core are
homogeneous, massive, and structureless with
rare shell fragments. Core disturbance is
moderate to severe.
10
4
4
1055C-10H
5
SS
6
6
med gn GY
10
8
7
8
CC
dk gn GY
PAL
SITE 1055
395
COLOR
Cored 92.0-101.5 mbsf
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Core 11H
1
METERS
Hole C
mlt ol GN
2
..
lt gn GY
3
2
med ol GN
11
4
4
5
mlt GY
6
6
SS
8
10
CC 8
7
dk gn GY
PAL
REMARKS
SILTY CLAY, NANNOFOSSIL-CLAY MIXED
SEDIMENT, and CLAY WITH SILT
General Description:
This core contains dark greenish gray (10Y 5/2)
SILTY CLAY, light gray (N7)
NANNOFOSSIL-CLAY MIXED SEDIMENT, and
dark greenish gray (10Y 4/1) CLAY WITH SILT.
In Section 2 the dominant lithology is underlain
by a light greenish gray (5G 8/1)
NANNOFOSSIL OOZE. The dominant lithology
is generally massive and structureless with
infrequent changes in grain size. Shell
fragments and pteropods are rare but present
throughout core.
1055C-11H
SITE 1055
396
Site 1055
REMARKS
1
mdk GY
lt GY
med gy GN
2
2
3
lt gn GY
..
4
1055C-12H
COLOR
Cored 101.5-111.0 mbsf
SAMPLES
CORE DISTURBANCE
Core 12H
ACCESSORIES
Hole C
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Site 1055
General Description:
This core contains light greenish gray (5GY 5/1)
to olive green (10Y 4/1) SILTY CLAY. The
dominant lithology is marked by several changes
in grain size throughout the core, ranging from a
light gray (N7) CLAYEY SILT in Section 1 to an
olive green (10Y 4/1) SILT in Section 5.
Boundaries between units with different grain
sizes are typically sharp and irregular. The
lithology becomes increasingly homogeneous
towards the base, typically a greenish gray (5GY
4/1) color.
4
12
lt ol GN
SILTY CLAY
6
5
mlt ol GN
6
med gn GY
8
med GY
CC
PAL
SITE 1055
397
2
COLOR
Cored 111.0-120.5 mbsf
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
Core 13H
mlt gn GY
..
1
METERS
CORE AND SECTION
Hole C
SS
med bl GY
3
med ol GY
4
2
med gn GY
mdk ol GY
6
6
5
13
4
7
8
8
med gn
.. GY
10
CC
med gn GY
PAL
REMARKS
SILTY CLAY
General Description:
This core contains light greenish gray (5GY 5/1)
to light olive green (5G 3/2) SILTY CLAY. The
dominant lithology is generally massive and
structureless with occasional changes in grain
size, ranging from a CLAY in Section 2 to a
SILT WITH FORAMINIFER SAND in Section 4.
The lithology becomes increasingly
homogeneous towards the middle of core with
few grain size variations. Small intervals of
clayey silt are present in basal sections. Large
gas voids occur throughout the core.
1055C-13H
SITE 1055
398
Site 1055
1055D-1H
REMARKS
..
CC
1055C-14H
COLOR
Cored 120.5-120.8 mbsf
SAMPLES
CORE DISTURBANCE
Core 14H
ACCESSORIES
Hole C
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Site 1055
PAL
CLAY
General Description:
This core contains dark greenish gray (10Y 4/1)
CLAY. Entire core is severely disturbed due to
gas expansion. Generally massive, structureless,
and monochromatic.
COLOR
Cored 0.0-5.6 mbsf
SAMPLES
CORE DISTURBANCE
Core 1H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Hole D
REMARKS
SILTY CLAY and CLAYEY SILT WITH
NANNOFOSSILS
1
METERS
Site 1055
mlt ol GY
1
2
2
3
..
mlt ol GY
4
mlt br GY
mlt ol
.. GN
4
CC
General description:
This core contains medium-light olive gray (5Y
6/1) SILTY CLAY. Dominant lithology is massive
and structureless, interbedded with a
medium-light brownish gray (5YR 6/1) CLAYEY
SILT WITH NANNOFOSSILS. Foraminifers and
pteropods become increasingly common in
Sections 3-4, and a perceptible color change to
pale red (10R 6/2) occurs within these sections.
PAL
mlt ol GN
SITE 1055
399
mlt gn GY
..
2
mlt gn GY
3
2
COLOR
Cored 5.6-15.1 mbsf
SAMPLES
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Core 2H
1
METERS
Hole D
med gn GY
4
2
lt gn GY
SILTY CLAY and CLAYEY SILT
General description:
This core contains medium-light greenish gray
(5GY 7/1) SILTY CLAY. Color mottles and
irregular contacts are common throughout the
core due to moderate bioturbation. The
dominant lithology is generally massive and
structureless with disseminated pyrite. Coarser
beds of greenish gray (5GY 6/1) CLAYEY SILT
frequently contain pteropods and shell
fragments.
med gn GY
4
Section 4. Thin (3 cm) pteropod layer.
mdk gn GY
6
5
med gn GY
mlt gn GY
6
med gn GY
..
..
med ol GY
7
8
REMARKS
CC
SS
PAL
med gn GY
1055D-2H
SITE 1055
400
Site 1055
COLOR
Cored 15.1-24.6 mbsf
SAMPLES
CORE DISTURBANCE
Core 3H
ACCESSORIES
Hole D
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
METERS
CORE AND SECTION
Site 1055
REMARKS
SILTY CLAY and CLAYEY SILT
1
med gn GY
1055D-3H
mlt gn GY
3
2
2
med gn GY
4
3
4
General description:
This core contains a greenish (5GY 6/1) to light
greenish gray (5GY 8/1) SILTY CLAY. In
Sections 5-7 the predominant lithology is
CLAYEY SILT with an irregular contact due to
severe bioturbation. In addition, small CLAYEY
SILT beds with abundant shell fragments are
found in Sections 2 and 7. Pyritized and
foraminifer-rich burrows are present in Sections 5
and 7.
mlt gn GY
5
6
med gn GY
mlt gn GY
6
8
7
mlt br GY
10
CC
PAL
med gn GY
..
..
SITE 1055
401
COLOR
Cored 24.6-34.1 mbsf
SAMPLES
CORE DISTURBANCE
Core 4H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Hole D
REMARKS
2
2
pal gn GY
med gn GY
3
1
SILTY CLAY
SS
med gy GN
4
4
4
..
med gn GY
6
5
lt GY
8
6
lt gn GY
7
med gn GY
10
CC
dk gn GY
..
..
..
PAL
General Description:
This core contains light (5G 8/1) to dark greenish
gray (5G 4/1) SILTY CLAY. Mottled coloration is
observed in sections with severe bioturbation. In
the upper sections the dominant lithology is
commonly interbedded with light greenish gray
(5G 8/1) CLAYEY SILT. Grain size variations are
marked by gradational and sharp contacts, and
the basal contacts of coarse intervals are
commonly associated with shell debris. Rare
pteropod shells found in Sections 1 and 8.
Pale red (5YR 6/1) color disseminated
throughout Section 2.
1055D-4H
SITE 1055
402
Site 1055
COLOR
Cored 34.1-43.6 mbsf
SAMPLES
CORE DISTURBANCE
Core 5H
ACCESSORIES
Hole D
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
METERS
CORE AND SECTION
Site 1055
1
..
2
mlt gn GY
3
2
med gn GY
dk ol GY
..
..
..
dk ol GY
REMARKS
SILTY CLAY
General Description:
This core consists of dark olive gray (5Y 3/1) to
greenish gray (5GY 6/1) SILTY CLAY. Dominant
lithology is interbedded with light greenish gray
(5GY 8/1) CLAYEY SILT in the upper sections.
Grain size variations are frequent and small (3-10
cm) throughout the core. Shell fragments are
common in Sections 6 and 7.
4
5
4
1055D-5H
mdk ol GY
6
5
Section 5 predominantly greenish gray (5G 6/1)
CLAYEY SILT with several thin (1-3 cm) beds of
SILTY CLAY WITH FORAMINIFERS.
6
med gn GY
7
8
CC
PAL
SITE 1055
403
med ol GY
..
2
mlt gn GY
3
2
COLOR
SAMPLES
Cored 43.6-53.1 mbsf
CORE DISTURBANCE
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Core 6H
1
METERS
Hole D
4
6
4
med gn GY
8
6
5
6
7
lt gn GY
10
CC
PAL
REMARKS
SILTY CLAY
General Description:
This core consists of light greenish gray (5GY
8/1) SILTY CLAY. Several sections have
mottled colors due to severe bioturbation. The
dominant lithology is commonly interbedded
with greenish gray (5GY 6/1) CLAYEY SILT with
fining and coarsening upward beds. Contacts
are mostly gradational and irregular. Section 1
is marked by a thin (6 cm) DOLOMITE nodule.
Burrows in the lower sections are commonly
filled with well-sorted SILTY FORAMINIFER
SANDS.
1055D-6H
SITE 1055
404
Site 1055
COLOR
Cored 53.1-62.6 mbsf
SAMPLES
CORE DISTURBANCE
Core 7H
ACCESSORIES
Hole D
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
METERS
CORE AND SECTION
Site 1055
1055D-7H
REMARKS
1
SILTY CLAY and CLAYEY SILT
3
2
2
General description:
This core consists of greenish gray (5GY 6/1)
SILTY CLAY and CLAYEY SILT. The dominate
lithologies alternate with gradational contacts and
are often associated with pteropod shells and
shell fragments. Smaller (1-3 cm)
coarsening-fining beds also occur in both
lithologies. All transitions generally appear
irregular due to moderate bioturbation. Pyrite
stains and worm burrows are disseminated
throughout core.
4
7
4
med gn GY
7
8
6
5
6
CC
SITE 1055
405
COLOR
SAMPLES
Cored 62.6-72.1 mbsf
CORE DISTURBANCE
Core 8H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
METERS
CORE AND SECTION
Hole D
REMARKS
1
CLAY WITH SILT
2
3
2
mdk gn GY
mlt gn GY
8
4
4
5
6
6
8
med gn GY
7
mdk gn GY
10
CC
PAL
General description:
This core consists of greenish gray (5GY 6/1)
CLAY WITH SILT interbedded with
medium-dark greenish gray (5G 4/1) CLAYEY
SILT in Sections 6-7. Transitions between
lithologies are irregular due to moderate
bioturbation. Gas expansion fractures are
common to severe throughout core.
1055D-8H
SITE 1055
406
Site 1055
COLOR
SAMPLES
Cored 72.1-81.6 mbsf
CORE DISTURBANCE
Core 9H
ACCESSORIES
PHYSICAL STRUCTURES
Hole D
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Site 1055
1055D-9H
REMARKS
1
CLAY WITH SILT and CLAYEY SILT
2
3
2
mdk gn GY
4
9
4
med gn GY
General description:
This core consists of greenish gray (5GY 6/1)
CLAY WITH SILT and CLAYEY SILT. The
dominant lithologies are interbedded
throughout the first five sections, with Sections
5 CC predominantly CLAY WITH SILT.
Lithologic transitions throughout the core are
both gradational and sharp with irregular
contacts due to moderate bioturbation. Gas
expansion is moderate to severe in several
sections.
6
5
..
10
CC
mdk gn GY
mlt gn GY
lt gn GY
..
7
8
6
med gn GY
mlt gn GY
PAL
SITE 1055
407
COLOR
Cored 81.6-91.1 mbsf
SAMPLES
CORE DISTURBANCE
Core 10H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Hole D
REMARKS
1
CLAY WITH NANNOFOSSILS
2
3
2
General Description:
This core consists of dark greenish gray (5G
4/1) CLAY WITH NANNOFOSSILS. The
dominant lithology is interbedded with a dark
greenish gray (10Y 4/1) CLAY WITH
NANNOFOSSILS AND SILT in Section 3. The
upper and lower contacts between the two
lithologies are gradational. Lithology generally
homogeneous, structureless, and
monochromatic. Shell fragments and pyrite
stains rare throughout core.
SS
10
4
4
dk gn GY
10
CC
7
8
6
5
6
PAL
1055D-10H
SITE 1055
408
Site 1055
COLOR
Cored 91.1-100.6 mbsf
SAMPLES
CORE DISTURBANCE
Core 11H
ACCESSORIES
Hole D
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Site 1055
1055D-11H
REMARKS
CLAY WITH NANNOFOSSILS
1
dk gn GY
3
2
2
..
dk gn
.. GY
SS
4
dk gn GY
..
..
lt GY
11
4
dk gn GY
General Description:
This core contains dark greenish gray (5G 4/1)
CLAY WITH NANNOFOSSILS. The dominant
lithology is commonly interbedded with a light
(5G 8/1) to dark greenish gray (5G 4/1) SILTY
CLAY with 5-10% foraminifers. The dominant
lithology is typically massive, structureless, and
monochromatic. Many burrow fills throughout
core contain SILTY CLAY WITH
FORAMINIFERS.
5
6
6
mdk gn GY
8
7
SS
10
CC
PAL
SITE 1055
409
COLOR
Cored 100.6-110.1 mbsf
SAMPLES
CORE
DISTURBANCE
ACCESSORIES
PHYSICAL
STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Core 12H
mdk GY
1
METERS
Hole D
..
2
mdk ol GY
..
dk ol GY
3
2
4
12
4
mdk ol GY
..
mdk ol GY
6
5
..
10
CC
mdk GY
7
8
6
dk GY
mdk ol GY
SS
PAL
REMARKS
CLAY WITH NANNOFOSSILS AND
FORAMINIFERS
General Description:
This core contains dark olive gray (5Y 3/1)
CLAY WITH NANNOFOSSILS AND
FORAMINIFERS. Dominant lithology massive,
structureless, and monochromatic. Upper and
basal sections are marked by gradational shifts
in grain size and color, ranging from light gray
(N7) CLAYEY SILT to dark olive green (5GY
3/1) SILTY CLAY. All contacts are irregular due
to moderate bioturbation.
1055D-12H
SITE 1055
410
Site 1055
COLOR
Cored 110.1-119.6 mbsf
SAMPLES
CORE DISTURBANCE
Core 13H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
Hole D
1
METERS
Site 1055
REMARKS
CLAY WITH NANNOFOSSILS AND DIATOMS
2
med gn GY
SS
3
2
4
4
1055D-13H
5
13
SS
General Description:
This core contains a dark greenish gray (10Y
5/2) CLAY WITH NANNOFOSSILS AND
DIATOMS. The dominant lithology contains
varying amount of biogenic components with
marked slumped structures such as sand-filled
fractures and chaotic bedding. Siliciclastic and
biogenic components vary throughout core. The
upper sections are predominantly
NANNOFOSSIL CLAYS and CLAYS with sharp
contacts. Basal lithologies range from CLAYS to
SILTY CLAYS with gradational contacts.
dk gn GY
6
6
7
8
SS
8
..
..
10
CC
mdk gn GY
PAL
SITE 1055
411
COLOR
Cored 119.6-129.1 mbsf
SAMPLES
CORE
DISTURBANCE
Core 14H
ACCESSORIES
PHYSICAL
STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
METERS
CORE AND SECTION
Hole D
REMARKS
3
2
2
1
CLAY WITH DIATOMS AND NANNOFOSSILS
dk gn GY
14
4
4
5
6
6
dk gn GY
CC
10
..
..
..
..
7
8
med gn GY
PAL
General Description:
This core contains dark greenish gray (10Y 5/2)
CLAY WITH DIATOMS AND NANNOFOSSILS.
The dominant lithology is characterized by
massive, structureless, and monochromatic
clay. Silica-lined worm burrows and pyrite stains
are disseminated throughout core. Lower
sections are interbedded with a light gray SILTY
SAND WITH FORAMINIFERSS containing shell
debris and gradational contacts.
1055D-14H
SITE 1055
412
Site 1055
COLOR
SAMPLES
Cored 0.0-8.5 mbsf
CORE DISTURBANCE
Core 1H
ACCESSORIES
PHYSICAL STRUCTURES
Hole E
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND SECTION
METERS
Site 1055
1055E-1H
REMARKS
1
..
NANNOFOSSIL CLAY
SS
med br GY
2
2
4
1
3
med gy GN
4
SS
mlt rd GY
General Description:
This core contains brownish gray (5YR 4/1)
NANNOFOSSIL CLAY. The biogenic component
varies in the top half of core, with a sharp
increase in diatoms in Section 3. A pteropod-rich
bed is also present in Section 3. The dominant
lithology is underlain by a dark greenish gray
(5GY 4/1) CLAY WITH SILT. Rare coarse
intervals with sharp, gradational, and scoured
contacts are found throughout the core. Shell
fragments and open worm burrows are present in
Sections 1-3.
5
6
dk gn GY
6
SS
8
CC
lt gn GY
PAL
SITE 1055
413
COLOR
SAMPLES
Cored 8.5-18.0 mbsf
CORE DISTURBANCE
Core 2H
ACCESSORIES
PHYSICAL STRUCTURES
BIOTURBATION INTENSITY
LITHOLOGY
CORE AND
SECTION
METERS
Hole E
REMARKS
1
CLAY
2
2
med gn GY
3
med bl GY
SS
mlt gn GY
2
4
4
med ol GN
..
med ol GN
6
8
6
5
lt ol GN
7
med gn GY
10
CC
PAL
General Description:
This core contains light (10Y 7/1) to dark
greenish gray (10Y 5/1) CLAY. The dominant
lithology varies in siliciclastic and biogenic
components throughout the core, ranging from a
massive CLAY to a CLAY WITH
NANNOFOSSILS AND SILT. Small to medium
(5-10 cm) coarse intervals of SILT and shell
fragments are common in Section 4.
1055E-2H
SITE 1055
414
Site 1055