|
Core, section,
interval (cm) |
Depth
(mbsf) |
Notes
|
|---|---|---|
| 201-1227A- | ||
| From lithostratigraphic description: | ||
| 7H-1 |
|
Not specifically stated: throughout Unit IV (7H-1 to 18CC) |
| From core description: | ||
| 3H-1, 116–118 | 16–26 | Reworked volcanic glass layer |
| 10H | 81.6–91.1 | Few volcanic accumulations |
| 11H | 91.1–100.6 | Orange spots with plagioclase-bearing volcanic glass |
| 12H | 100.6–110.1 | Rich in volcanic glass |
| 13H-3 | 110.0–119.6 | 3-cm-thick gray volcanic ash layer: yellow specks, volcanic glass |
| From smear slides: | ||
| 3H-1, 116 | 16.26 | Plagioclase and silt-bearing volcanic ash (69% volcanic glass) |
| 6H-3, 135 | 47.95 | Clay-bearing volcanic glass–rich carbonate ooze (30% volcanic glass) |
| 14H-2, 70 | 121.8 | Plagioclase-bearing volcanic ash (94% volcanic glass) |
| 201-1228A- | ||
| From lithostratigraphic description: | ||
| 1H-1 | Uppermost 3 m | Few centimeter thick light gray volcanic ash layers |
| 1H-2 | Uppermost 3 m | Few centimeter thick light gray volcanic ash layers |
| 3H | Above 5 m | Three ash layers, within cores 1H and 3H, varying in thickness from 4 and 6 cm, show graded bedding and sharp basal contacts, indicating redistribution of terrigenous and volcanic material on the seafloor |
| 4H-6 |
|
Three volcanic ash layers observed |
| 6H-4, 60 |
|
Parallel and cross laminations |
| 6H-6, 60 |
|
Parallel and cross laminations |
| From core description: | ||
| 1H-1, 99 | 0.99 |
|
| 1H-2, 8 | 1.51 | Light gray clay-silt rich layers (presumably of volcanic origin) |
| 2H | 4.9–14.4 | Pale gray ash, layers containing few isotropic clasts, clay is abundant |
| 3H | 14.4–23.9 | Three blue and gray volcanic ash layers (4 and 6 cm thick) |
| 3H-7 |
|
One ash layer shows graded bedding and erosional base |
| 4H-6 | 31.4 | Contains Three volcanic ash layers |
| 6H | 42.9–52.4 | Pale blue gray ash layer: diatom-bearing clay-rich volcanic ash |
| 10H |
|
Orange spots rich in volcanic glass (disturbed cores) |
| From smear slides: | ||
| 11H-2 | 91.4–93 | Several sandy layers |
| 1H-1, 99 | 0.99 | Diatom-bearing volcanic glass rich silt |
| 1H-2, 132 | 2.73 | Glauconite-bearing quartz-rich lithic silty sand |
| 6H-4, 70 | 48.1 | Diatom-bearing pyrite and clay-rich diatom ooze (70% volcanic glass) |
| 6H-6, 62 | 51.02 | Diatom and volcanic glass-bearing dolomite (5% volcanic glass) |
| 10H-3, 29 | 84.1 | Quartz and plagioclase and diatom-bearing volcanic glass (84% volcanic glass) |
| 201-1229A- | ||
| From core description: | ||
| 5H | 33.4–39.9 | Gray layers are rich in quartz and contain feldspar and glass |
| 11H | 88.9–98.4 | Few volcaniclastics throughout core |
| From smear slides: | ||
| 5H-4, 66 | 38.56 | Diatom-bearing volcanic glass-feldspar-quartz rich clay (20% volcanic glass) |
| 11H-3, 13 | 92.03 | Volcanic glass bearing quartz-feldspar and silt-rich clay (5% volcanic glass) |
| 11H-5, 73 | 95.63 | Plagioclase-quartz rich volcanic glass (68% volcanic glass) |