CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-1H
Core Photo message openfile IMAGES/1227A1H.PDF
Cored 0.0-5.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 1H
DESCRIPTION
Section 1, 0-16 cm was sampled for
microbiology.
0.5
1
CLAY- AND SILT-RICH DIATOM OOZE
1.0
IW
1.5
2
2.0
2.5
3.0
SS
SS
XRD
SS
XRD
XRD
IW
3
3.5
4.0
IW
4
4.5
5.0
SS
5.5
1
Major Lithology:
Olive green CLAY- AND SILT-RICH DIATOM
OOZE
Minor Lithologies:
1. Olive green DIATOM-BEARING
FORAMINIFER-RICH SILT
2. CLAY-BEARING DIATOM OOZE
General Description:
The olive green sediments are laminated with
the coarser laminae being more rich in
foraminifers, clay, and silt. Accumulations of
fish scales form dark spots. Lighter yellow
layers are coarser grained and diatom-rich.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-2H
Core Photo message openfile IMAGES/1227A2H.PDF
Cored 5.6-15.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 2H
2
DESCRIPTION
CLAY- AND SILT-RICH DIATOM OOZE,
SILT-RICH FORAMINIFER OOZE, and
DIATOM-BEARING FORAMINIFER-RICH SILT
1
0.5
1.0
PP
IW
1.5
2
2.0
Major Lithology:
1. Olive green CLAY- AND SILT-RICH DIATOM
OOZE
2. Soft, olive green SILT-RICH FORAMINIFER
OOZE
3. Very dark brown DIATOM-BEARING
FORAMINIFER-RICH SILT
2.5
IW
3.0
3
3.5
4.0
SS
IW
4.5
Section 2, 40-102 cm was sampled for
microbiology.
4
5.0
5.5
XRD
SS
6.0
IW
Phosphate nodule
Phosphate nodule
Section 5, 0-118 cm was sampled for
microbiology.
5
6.5
7.0
IW
7.5
6
8.0
8.5
IW
7
9.0
9.5
General Description:
Below 60 cm in Section 1 the diatom ooze
grades into a dark olive green foraminifer ooze.
The foraminifers are mostly benthic. A bone
fragment was found at 39 cm. In Section 4 a
sharp contact with dark brown
DIATOM-BEARING FORAMINIFER-RICH SILT
is present. In this section, two phosphate
nodules were also observed.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-3H
Core Photo message openfile IMAGES/1227A3H.PDF
Cored 15.1-24.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 3H
3
DESCRIPTION
CLAY-BEARING DIATOM-RICH SILT
1
0.5
SS
1.0
SS
IW
1.5
2
2.0
2.5
IW
3.0
Major Lithology:
Dark brow to black CLAY-BEARING
DIATOM-RICH SILT
General Description:
Sand sized benthic foraminifers were observed
throughtout the core. In Section 1, 116-118 cm
is a reworked volcanic-glass layer. Slightly
bioturbated zones were also observed.
Section 2, 0-120 cm was sampled for
microbiology.
SS
3
3.5
4.0
PP
IW
4.5
4
5.0
5.5
IW
6.0
5
6.5
7.0
IW
7.5
6
8.0
SS
8.5
IW
7
9.0
9.5
Section 5, 0-89 cm was sampled for
microbiology.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-4H
Core Photo message openfile IMAGES/1227A4H.PDF
Cored 24.6-34.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 4H
4
DESCRIPTION
DIATOM RICH CLAY
1
0.5
SS
IW
1.0
General Description:
In Section 5, 62 cm, a lighter interval is present,
which includes a cemented carbonate layer.
Pyritized radiolarians and foraminifers were
observed.
2
1.5
2.0
2.5
3
3.0
3.5
4.0
4
4.5
5.0
SS
5.5
5
6.0
XRD
6.5
IW
7.5
6
7.0
8.0
9.0
7
8.5
10.0
10.5
8
9.5
Major Lithology:
Dark brown to black DIATOM RICH CLAY with a
few scattered foraminifers.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-5H
Core Photo message openfile IMAGES/1227A5H.PDF
Cored 34.1-43.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 5H
5
DESCRIPTION
GLAUCONITE BEARING PYRITE RICH SILT
XRD
1
0.5
1.0
IW
1.5
2
2.0
Major Lithology:
Dark brown, homogeneous GLAUCONITE
BEARING PYRITE RICH SILT
General Description:
A few larger glauconite and pyrite clasts are
present throughout the core. The clasts are
coarser in Section 6 and 7.
2.5
PP
IW
3.0
Section 3, 0-80 cm was sampled for
microbiology.
3
3.5
4.0
IW
4.5
4
5.0
5.5
IW
6.0
Section 5, 0-114 cm was sampled for
microbiology.
5
6.5
7.0
IW
7.5
6
8.0
8.5
SS
IW
7
9.0
9.5
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-6H
Core Photo message openfile IMAGES/1227A6H.PDF
Cored 43.6-53.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 6H
6
DESCRIPTION
PYRITE-BEARING DIATOM-RICH CLAY
0.5
1
Major Lithology:
Black to dark brown PYRITE-BEARING
DIATOM-RICH CLAY
1.0
IW
1.5
2
2.0
2.5
IW
3.0
General Description:
Pyrite is common throughout the core. A brown
red to pale red diatom-rich layer occurs in
Section 3. Few burrows have been found in the
lower part of the core.
Section 2, 0-89 cm was sampled for
microbiology.
3
3.5
4.0
SS
XRD
SS
SS
XRD
SS
4.5
4
5.0
5.5
6.0
IW
Section 4, 0-50 cm was sampled for
microbiology.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-7H
Core Photo message openfile IMAGES/1227A7H.PDF
Cored 53.1-62.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 7H
PP
SS
1
0.5
7
1.0
SS
1.5
IW
CLAY- AND NANNOFOSSIL-BEARING DIATOM
OOZE
Major Lithology:
Dark green CLAY- AND
NANNOFOSSIL-BEARING DIATOM OOZE
General Description:
The sediment contains both homogeneous and
bioturbated layers throughout the core.
2
2.0
DESCRIPTION
Section 2, 0-101 cm was sampled for
microbiology.
2.5
3.0
IW
3.5
SS
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-8H
Core Photo message openfile IMAGES/1227A8H.PDF
Cored 62.6-72.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
1
METERS
Site 1227 Hole A Core 8H
8
XRD
DESCRIPTION
NANNOFOSSIL- AND CLAY-BEARING DIATOM
OOZE and GRAVEL
Major Lithology:
Olive green NANNOFOSSIL- AND
CLAY-BEARING DIATOM OOZE and GRAVEL
General Description:
The core consists of gravel-sized dark green,
olive, and white clasts, mixed with shell hash
and olive green NANNOFOSSIL- AND
CLAY-BEARING DIATOM OOZE.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-9H
Core Photo message openfile IMAGES/1227A9H.PDF
Cored 72.1-81.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 9H
SS
1
0.5
1.0
PP
IW
1.5
2
2.0
3.0
3
3.5
4.0
IW
SS
5
5.5
6.0
DIATOM- AND CLAY-BEARING GRAVEL and
CLAY- AND NANNOFOSSIL-BEARING DIATOM
OOZE
Major Lithologies:
1. White, black and green olive DIATOM- AND
CLAY-BEARING GRAVEL
2. Dark olive, bioturbated CLAY- AND
NANNOFOSSIL-BEARING DIATOM OOZE
Section 3, 0-95 cm was sampled for
microbiology.
Yellow speck, F-phophate?
4
5.0
DESCRIPTION
General Description:
Dark gravel is present in the top 45 cm of
Section 1. The gravel consists of mixed
dolomite and phophate clasts. Dark olive
sediments of the rest of the core are
bioturbated and have a low-angle inclination.
Lamination is caused by variation in the content
of diatoms, clay, and opaque clasts.
2.5
4.5
9
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-10H
Core Photo message openfile IMAGES/1227A10H.PDF
Cored 81.6-91.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 10H
10
DESCRIPTION
CLAY- AND NANNOFOSSIL-BEARING DIATOM
OOZE
1
0.5
Major Lithology:
Dark olive green CLAY- AND
NANNOFOSSIL-BEARING DIATOM OOZE
1.0
1.5
3.0
IW
General Description:
The first 45 cm consists of dark and gray gravel
which is most likely washed from horizons
above due to drilling. The gravel probably
consists of dolomite and phosphate nodules.
The rest of the core is very homogeneous with
few volcanic ash accumulations.
3.5
SS
Section 2, 0-73 cm was sampled for
microbiology.
2
2.0
3
2.5
4.0
4.5
4
5.0
5.5
IW
6.5
7.0
5
6.0
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-11H
Core Photo message openfile IMAGES/1227A11H.PDF
Cored 91.1-100.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 11H
11
DESCRIPTION
CLAY- AND NANNOFOSSIL-BEARING DIATOM
OOZE
1
0.5
1.0
SS
IW
1.5
Major Lithology:
Dark olive green CLAY- AND
NANNOFOSSIL-BEARING DIATOM OOZE
Minor Lithology:
Orange PLAGIOCLASE-BEARING VOLCANIC
GLASS
2
2.0
2.5
3.0
3.5
4.0
IW
General Description:
In Section 1 (0-55 cm) the sediment is soupy
due to drilling disturbance. Gravel is winnowed
from sections above. It contains nodules that
are most probably phosphate and dolomite. The
rest of the core is homogenous dark olive green
with white laminae rich in elongated diatoms.
Orange spots with PLAGIOCLASE BEARING
VOLCANIC GLASS are sporadically distributed.
Section 2, 0-126 cm was sampled for
microbiology.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-12H
Core Photo message openfile IMAGES/1227A12H.PDF
Cored 100.6-110.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 12H
1
1.0
SS
XRD
XRD
1.5
PP
2
2.0
2.5
IW
3.0
Major Lithology:
Dark olive green CLAY- AND
NANNOFOSSIL-BEARING DIATOM OOZE
General Description:
In Section 1, 0-30 cm gravel is present in a
soupy matrix, due to drilling disturbance. The
dark olive green sediment is slightly laminated
with lighter diatom rich laminae. Orange spots
are rich in volcanic glass. A laminated dolomite
nodule was found in Section 1, at 85 cm.
Section 2, 0-105 cm was sampled for
microbiology.
3
3.5
4.0
4.5
4
5.0
5.5
IW
5
6.0
7.0
DESCRIPTION
CLAY- AND NANNOFOSSIL-BEARING DIATOM
OOZE
0.5
6.5
12
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-13H
Core Photo message openfile IMAGES/1227A13H.PDF
Cored 110.1-119.6 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 13H
1
Major Lithology:
Dark olive green NANNOFOSSIL-BEARING
DIATOM- and CLAY-RICH SILT
1.0
IW
1.5
2
2.0
2.5
SS
3.0
3
4.0
4.5
4
5.0
5.5
SS
6.0
IW
SS
5
General Description:
The top 35 cm of Section 1 are enriched in
gravel. This enrichment is due to drilling
disturbance. A 3 cm thick gray volcanic ash
layer is present in Section 3. Yellow specks
containing volcanic glass shards are common
throughout the core. Core 5 and 6 are more olive
and show more pronounced lamination.
Section 3, 15-100 cm and 115-135 cm were
sampled for microbiology.
3.5
7.0
DESCRIPTION
NANNOFOSSIL-BEARING DIATOM- and
CLAY-RICH SILT
0.5
6.5
13
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-14H
Core Photo message openfile IMAGES/1227A14H.PDF
Cored 119.6-129.1 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole A Core 14H
14
DESCRIPTION
NANNOFOSSIL-RICH DIATOM OOZE
0.5
1
Major Lithology:
Greenish brown NANNOFOSSIL-RICH DIATOM
OOZE
1.0
IW
1.5
2
2.0
2.5
3
3.0
3.5
1227A-15P NO RECOVERY
SS
General Description:
The first 20 cm consists of white gravel which is
most likely washed from horizons above due to
drilling. Homogeneous greenish brown
NANNOFOSSIL-RICH DIATOM OOZE with few
foraminifer and silicoflagellate layers are
present throughout the core.
Section 2, 0-65 cm was sampled for
microbiology.
Section 2, 75-105 cm was sampled for
microbiology.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-16M
Core Photo message openfile IMAGES/1227A16M.PDF
SAMPLE
DISTURB.
DIAGENESIS
ICHNO.
GRAPHIC
LITH.
SECTION
STRUCTURE
Cored 131.1-132.1 mbsf
DESCRIPTION
1
METERS
Site 1227 Hole A Core 16M
15
Gravel from Fugro pressure corer.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-17H
Core Photo message openfile IMAGES/1227A17H.PDF
0.5
SAMPLE
DISTURB.
DIAGENESIS
ICHNO.
GRAPHIC
LITH.
SECTION
2
DESCRIPTION
CLAY-BEARING NANNOFOSSIL-RICH DIATOM
OOZE
SS
IW
1.0
1.5
STRUCTURE
Cored 132.1-141.6 mbsf
1
METERS
Site 1227 Hole A Core 17H
16
Major Lithology:
Dark brown CLAY-BEARING
NANNOFOSSIL-RICH DIATOM OOZE with
pyrite
General Description:
This core is very disturbed by drilling.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227A-18H
Core Photo message openfile IMAGES/1227A18H.PDF
0.5
SAMPLE
DISTURB.
DIAGENESIS
ICHNO.
GRAPHIC
LITH.
SECTION
STRUCTURE
Cored 141.6-151.1 mbsf
DESCRIPTION
CLAY-BEARING NANNOFOSSIL-RICH DIATOM
OOZE
1
METERS
Site 1227 Hole A Core 18H
17
Major Lithology:
Dark brown CLAY-BEARING
NANNOFOSSIL-RICH DIATOM OOZE
1.0
1.5
2
2.0
General Description:
The core is highly disturbed and soupy
throughout.
Section 2, 53-72 cm was sampled for
microbiology.
2.5
IW
IW
3.5
3
3.0
4.0
5.0
5.5
4
4.5
Section 2, 85-135 cm was sampled for
microbiology.
Section 3, 35-54 cm void.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227B-1H
Core Photo message openfile IMAGES/1227B1H.PDF
Cored 0.0-5.0 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole B Core 1H
18
DESCRIPTION
CLAY- AND SILT-RICH DIATOM OOZE
SS
Major Lithology:
Entire core consists of laminated CLAY- AND
SILT-RICH DIATOM OOZE
1
0.5
1.0
General Description:
The thickness of light green and yellow laminae
varies from 2 to 5 mm. Laminae consist of
almost pure diatom ooze. Fish vertebra are in
Section 1, 42 to 43 cm. Section 2, 57 to 69 cm
contains a burrow filled with unconsolidated
FORAMINIFER OOZE.
1.5
2
2.0
2.5
3.0
3
3.5
4.0
5.0
SS
4
4.5
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227B-2H
Core Photo message openfile IMAGES/1227B2H.PDF
1
0.5
Cored 5.0-14.5 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole B Core 2H
19
DESCRIPTION
CLAY- AND SILT-RICH DIATOM OOZE
PYRITE- AND GLAUCONITE-RICH
FORAMINFER OOZE
CLAY-BEARING DIATOM-RICH SILT
1.0
1.5
2
2.0
2.5
3.0
3
3.5
4.0
4.5
4
5.0
5.5
6.0
5
6.5
7.0
7.5
6
8.0
8.5
7
9.0
9.5
10.0
Major Lithologies:
From the top of the core through Section 5, 10
cm, the sediment consists of alternations of
olive green CLAY- AND SILT-RICH DIATOM
OOZE and PYRITE- AND GLAUCONITE-RICH
FORAMINFER OOZE
Below Section 5, 10 cm, the sediment is a dark
brown CLAY-BEARING DIATOM-RICH SILT
Minor Lithology:
Dark brown DIATOM-BEARING
FORAMINIFER-RICH SILT
General Description:
Laminated olive green diatom ooze grades into
olive green foraminifer ooze below 110 cm in
Section 1 and is present again from Section 2,
121 cm through Section 4, 26 cm. Foraminifer
ooze is present in Section 1, 110 cm through
Section 2, 121 cm and Section 4, 26 cm through
Section 5, 10 cm. Below Section 5, 10 cm, dark
brown, slightly bioturbated silt is the dominant
lithology. The base of the second diatom ooze
interval is marked by a 7 cm thick dark brown
layer composed of DIATOM-BEARING
FORAMINIFER-RICH SILT. A small yellow
carbonate nodule occurs in Section 2, 112-114
cm. Phosphate nodules mark the top of the silty
interval in Section 5, 10 cm. These nodules as
well as the sharp contact between the over- and
underlying intervals indicate the presence of a
unconformity at this depth.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227B-3H
Core Photo message openfile IMAGES/1227B3H.PDF
Cored 14.5-24.0 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole B Core 3H
20
DESCRIPTION
CLAY-BEARING DIATOM-RICH SILT
1
0.5
1.0
1.5
2
2.0
Dominant Lithology:
The entire core consists of homogeneous dark
brown CLAY-BEARING DIATOM-RICH SILT
General Description:
Section 4 through 7 contain scattered
sand-sized foraminifers, being slightly more
abundant in Section 4 and 5. Two white spots
are in Section 2, 55 to 58 cm.
2.5
3.0
3
3.5
4.0
4.5
4
5.0
5.5
6.0
5
6.5
7.0
7.5
6
8.0
8.5
7
9.0
9.5
Hole 1227C - Cores from this hole were not split on board. They were shipped to the Gulf Coast Repository
as complete sections for postcruise sampling.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-1H
Core Photo message openfile IMAGES/1227D1H.PDF
Cored 0.0-7.5 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole D Core 1H
21
DESCRIPTION
CLAY-RICH DIATOM OOZE and SHELL
DEBRIS-BEARING FORAMINIFERAL OOZE
1
0.5
Major Lithology:
1. Olive, well laminated CLAY-RICH DIATOM
OOZE
2. Olive SHELL DEBRIS-BEARING
FORAMINIFERAL OOZE
1.0
1.5
IW
2
2.0
2.5
SS
3.0
3
3.5
4.0
SS
4.5
4
5.0
5.5
General Description:
Sections 2 to 4 consist of lithology 1. Dark
green laminae alternate with white laminae.
Some of them show angular lamination.
In Section 5 and CC a SHELL
DEBRIS-BEARING FORAMINIFERAL OOZE is
present. Coarser shell debris occurs in Section
5, at 97-105 cm.
Entire Section 1 was sampled for microbiology
and interstitial water analysis.
IW: 0-15 cm, 60-75 cm, and100-115 cm
Microbiology: 15-60 cm. 75-100 cm, and
115-150 cm
Section 2, 0-21 cm was sampled for
microbiology.
Section 2, 45-77 cm was sampled for
microbiology.
6.5
7.0
5
6.0
Section 3, 0-72 cm and Section 4, 0-5 cm, was
sampled for microbiology.
Section 4, 0-5 cm was sampled for
microbiology.
Section 5, 0-81 cm was sampled for
microbiology.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-2H
Core Photo message openfile IMAGES/1227D2H.PDF
Cored 7.5-17.0 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole D Core 2H
1
Major Lithologies:
1. Laminated green CLAY-RICH DIATOM OOZE
2. Olive green SILT-RICH FORAMINIFER OOZE
1.0
SS
1.5
2
2.0
2.5
XRD
3.0
3
3.5
4.0
4.5
4
5.0
5.5
6.0
5
6.5
7.0
6
7.5
8.5
9.0
DESCRIPTION
CLAY-RICH DIATOM OOZE and SILT-RICH
FORAMINIFER OOZE
0.5
8.0
22
SS
General Description:
In Section 2, 12-19 cm a dark olive silty layer
with two bone fragments is present. The
foraminifer ooze occurs in Section 2 through to
Section 6. In Section 3 the sediment becomes
more silt- and diatom-rich, and layers of
volcanic-glass are present in Section 6.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-3H
Core Photo message openfile IMAGES/1227D3H.PDF
Cored 17.0-26.5 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole D Core 3H
23
DESCRIPTION
DIATOM-BEARING CLAY- AND PYRITE-RICH
SILT
1
0.5
Major Lithology:
Olive brown, bioturbated DIATOM-BEARING
CLAY- AND PYRITE-RICH SILT
1.0
1.5
Minor Lithology:
2
2.0
SS
SS
CLAY-BEARING PYRITE-RICH QUARZ
GLAUCONITE SILT
2.5
General Description:
Sediment in burrows consists of minor lithology.
3.0
3
3.5
4.0
4.5
4
5.0
5.5
6.0
5
6.5
7.0
7.5
6
8.0
8.5
7
9.0
9.5
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-4H
Core Photo message openfile IMAGES/1227D4H.PDF
Cored 26.5-36.0 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole D Core 4H
24
DESCRIPTION
PYRITE-, DIATOM- AND CLAY-RICH SILT
0.5
1
Major Lithology:
Dark olive green PYRITE-, DIATOM- AND
CLAY-RICH SILT
1.0
IW
2.0
SS
2
1.5
General Description:
The entire core consists of dark olive green
homogeneous sediment with few coarser
burrows. Possible veinlets of very fine grained
barite is present in Section 5, 90-110 cm.
2.5
IW
3.0
3
3.5
4.0
IW
4.5
Section 4, 0-94 cm was sampled for
microbiology.
4
5.0
5.5
IW
6.0
5
6.5
7.0
XRD
SS
IW
7.5
8.0
6
Section 6, 0-135 cm was sampled for
microbiology.
8.5
IW
7
9.0
9.5
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-5H
Core Photo message openfile IMAGES/1227D5H.PDF
Cored 36.0-45.5 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole D Core 5H
25
DESCRIPTION
FORAMINIFER-RICH SILTY CLAY
0.5
1
Major Lithology:
Dark olive green bioturbated
FORAMINIFER-RICH SILTY CLAY
1.0
IW
1.5
2
2.0
2.5
IW
3.0
General Description:
The entire core consists of dark olive green
sediment with a fairly homogenous appearance.
Slight bioturbation is present throughout the
core. A barite nodule has been found in Section
4, 94-95 cm.
Section 2, 0-99 cm was sampled for
microbiology.
3
3.5
4.0
SS
4.5
IW
4
5.0
5.5
XRD
SS
6.0
IW
7.0
Section 5, 0-62 cm and 86-91 cm was sampled
for microbiology.
5
6.5
IW
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-6H
Core Photo message openfile IMAGES/1227D6H.PDF
Cored 45.5-55.0 mbsf
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole D Core 6H
XRD
XRD
1.0
1.5
IW
SS
2
2.0
2.5
3.0
SS
XRD
3
3.5
4.0
4.5
4
5.0
5.5
6.0
5
6.5
7.0
7.5
6
8.0
8.5
9.0
DESCRIPTION
PYRITE-RICH GLAUCONITE SAND
Major Lithology:
Very dark olive green PYRITE-RICH
GLAUCONITE SAND
1
0.5
26
General Description:
Fine-grained pyrite is present on the surface of
0.5-mm-scale round glauconite grains. Together
they form a very dark unlithified sand. A well
rounded (terrigenous) pebble was found,
surrounded by disseminated barite. 5-mm-scale
clams with thick carbonate shells were found in
the uppermost part of the core where the
sediment is more clay- and silt-rich. A
carbonate nodule was found in this interval.
3 cm-scale rounded terrigenous pebble in
Section 3.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-7H
Core Photo message openfile IMAGES/1227D7H.PDF
SAMPLE
DISTURB.
DIAGENESIS
ICHNO.
GRAPHIC
LITH.
SECTION
STRUCTURE
Cored 55.0-64.5 mbsf
DESCRIPTION
1
METERS
Site 1227 Hole D Core 7H
27
GRAVEL
Major Lithology:
White, dark green and black gravel.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227D-8H
Core Photo message openfile IMAGES/1227D8H.PDF
SAMPLE
DISTURB.
DIAGENESIS
ICHNO.
GRAPHIC
LITH.
SECTION
STRUCTURE
Cored 64.5-74.0 mbsf
0.5
1.5
Major Lithology:
White green and black GRAVEL
2
1.0
DESCRIPTION
GRAVEL
1
METERS
Site 1227 Hole D Core 8H
28
IW
General Description:
The core is very disturbed by the drilling
process. A carbonate cemented glauconite
nodule was found in Section CC.
Entire Section 2 was sampled for microbiology
(0-109 cm).
1227E-1H through 1227E-3 H - Cores were not split on board. They were shipped to the Gulf Coast Repository as complete sections for postcruise sampling.
CORE DESCRIPTIONS
VISUAL CORE DESCRIPTIONS, SITE 1227
1227E-4M
Core Photo message openfile IMAGES/1227E4M.PDF
SAMPLE
DISTURB.
DIAGENESIS
STRUCTURE
ICHNO.
GRAPHIC
LITH.
SECTION
METERS
Site 1227 Hole E Core 4M
29
Cored 25.90-26.90
DESCRIPTION
Severely drilling disturbed Fugro Pressure
core barrel interval.
SS1
*
4
*
10
3
*
5
64
1
*
1
15
5
5
5
5
8
9
30
10
5
*
*
90
*
*
*
*
*
*
1
5
*
*
*
*
*
*
4
1
1
5
1
90
5
95
90
90
85
30
80
10
10
15
70
20
*
5
9
10
15
70
25
10
9
*
1
20
5
3
13
*
1
*
*
Volcanic Glass Shard (246)
Silt (191)
Organic Debris/Matter (142)
Lithoclast (107)
Clay Size Particles (255)
Sponge Spicules (199)
1
4
*
30
72
76
83
65
9
61
69
95
1
78
91
85
88
*
30
10
3
*
65
*
*
*
*
30
1
1
*
1
*
1
*
Silicoflagellates (189)
1
3
1
1
Radiolarians (173)
Diatoms (58)
Bivalves (23)
43
85
80
89
76
88
55
9
*
78
52
25
15
10
20
10
10
4
50
1
1
*
*
*
*
*
*
*
*
5
10
2
4
1
*
*
4
3
4
*
*
*
90
90
10
7
5
10
*
5
*
3
87
41
5
10
2
15
4
25
5
10
5
*
*
5
8
10
2
1
3
3
4
3
*
*
*
4
5
1
1
2
1
Nannofossils (132)
2
1
1
Rock
Foraminifers (78)
1
Quartz (172)
1
1
Pyrite (169)
D
M
M
M
M
D
D
M
D
M
D
M
Plagioclase (159)
2.50
4.16
8.87
16.29
19.00
19.02
28.41
33.52
39.90
41.45
47.30
48.69
1
1
Opaques (140)
100
116
137
129
50
52
41
102
90
95
30
19
10
10
30
10
1
1
Mica (118)
2
3
1
6
2
2
2
5
3
4
2
3
82
Glauconite (82)
D
M
90
90
70
90
99
*
20
5
20
4
10
10
9
4
9
Feldspar (71)
0.39
4.32
10
2
Dolomite (62)
39
132
70
20
5
20
4
10
10
9
4
9
99
5
95
95
20
98
80
20
80
Biogenic
Clay Mineral (47)
1
3
4
80
95
80
92
90
90
91
26
91
1
95
5
5
70
2
20
80
20
Carbonate (35)
D
M
D
D
D
D
D
M
D
M
D
M
D
D
D
D
D
D
D
D
D
D
D
D
M
M
D
D
Barite (17)
1.72
1.74
1.83
5.13
9.76
11.20
15.70
16.26
18.46
23.46
25.50
29.67
42.70
46.80
47.80
47.80
47.90
47.95
53.51
54.02
56.58
76.75
77.31
77.32
84.99
95.28
121.80
132.78
Clay
22
24
33
63
116
110
60
116
36
86
90
67
110
20
120
120
130
135
41
92
48
15
71
72
39
118
70
68
Silt
Lithology
2
2
2
4
3
4
1
1
3
6
1
4
6
3
3
3
3
3
1
1
3
4
4
4
3
3
2
1
Sand
Depth (mbsf)
B
H
H
D
H
H
H
H
H
H
H
H
H
H
H
H
Top (cm)
Hole
1
1
Hole
1
1
2
2
3
3
4
4
5
5
6
6
Sct
CT
Core
A
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Mineral
10
10
5
8
4
1
5
20
1
1
20
35
1
63
60
*
5
1
35
25
79
97
77
20
2
9
15
1
4
*
*
1
*
*
10
3
15
*
30
*
*
51
4
94
5
3
75
*
15
*
*
1
*
Clay- and Silt-rich Foraminifer Ooze
Clay-bearing Diatom Ooze
Clay- and Silt-rich Diatom Ooze
Diatom-bearing Foramonifer-rich Silt
Clay- and Diatom-rich Silt
Clay-rich Silt
Clay-bearing Diatom-rich Nannofossil Ooze
Plagioclase- and Silt-bearing Volcanic Ash
Clay-bearing Diatom-rich Silt
Diatom-bearing Clay
Diatom-rich Silt
Diatom-bearing Clay
Gloconite-bearing Pyrite-rich Silt
Pyrite-bearing Silt
Pyrite-bearing Diatom-rich Clay
Pyrite-bearing Diatom-rich Clay
Silt
Clay-bearing volcanic glass-rich Carbonate Ooze
Clay-bearing Nannofossil-rich Diatom Ooze
Clay-bearing Diatom Ooze
Clay- and Nannofossil-bearing Diatom Ooze
Clay- and Nannofossil-rich Diatom Ooze
Clay-bearing Diatom Ooze
Nannofossil-bearing Clay-Diatom Ooze
Diatom-bearing Nannofossil-rich Ooze
Plagioclase-bearing Volcanic Ash
Nannofossil-rich Diatom-Ooze
Pyrite- and Clay-bearing Nannofossil-rich Diatom
Ooze
Silt- and Clay-rich Diatom Ooze
Foraminifer-bearing Nannofossil-rich Diatom Ooze
28
66
59
*
Comments
16
54
67
8
45
Diatom Ooze
Diatom Ooze
Clay-bearing Diatom Ooze
Diatom-rich Volcanic Glass
Clay-bearing Pyrite-rich Quartz and Glauconite Silt
Diatom-bearing Clay- and Pyrite-rich Silt
Pyrite- Diatom- and Clay-rich Silt
Carbonate-bearing Pyrite-rich Barite Clay
Foraminifer-rich Clayey Silt
Barite Silt
Glauconite-bearing Pyrite-rich Clayey Silt
Pyrite-bearing Barite Silt
30
Hole
1
1
1
1
2
2
3
3
3
3
4
4
5
6
6
6
6
6
7
7
7
9
9
9
10
11
14
17
Texture
CORE DESCRIPTIONS
SMEAR SLIDES, SITE 1227
Sample