Table T1. Lithologic subunits defined in Hole C0022B.
|
Subunit
|
Core, section, interval (cm) | Depth (mbsf) |
Thickness
(m) |
Stratigraphic
age |
Lithologic description
|
Process of formation
|
Interpretation
|
||
|---|---|---|---|---|---|---|---|---|---|
|
Top
|
Bottom
|
Top
|
Bottom
|
||||||
| 338-C0022B- | 338-C0022B- | ||||||||
| IA | 1H-1, 0 | 38X-2, 56 | 0.00 | 383.47 | 383.47 | Silty clay with depth-diminishing carbonate content, thin sand layers, and volcanic ash layers | Hemipelagic settling, thin-bedded turbidites, and volcanic ash fall | Slope-basin succession | |
| IB | 38X-2, 56 | 41X-CC, 39 | 383.47 | 415.90 | 32.44 | Carbonate-poor silty clay, mud clast gravel layers, and significant amounts of clayey silt and fine to coarse sand | Hemipelagic settling, medium-bedded turbidites, and mass-wasting | Early stage of slope-basin fill | |
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