Table T6. Summary of stratigraphic relations at Site C0011 and correlation with equivalent units at ODP sites and IODP Site C0012. (See table note.)
| Unit | Unit name |
Core, section, interval (cm) |
Depth CSF (m) |
Thickness (m) |
Stratigraphic age |
Lithologic description |
Processes of formation |
Stratigraphic correlation | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Site 808 |
Site 1173 |
Site 1174 |
Site 1177 |
Site C0012 |
||||||||||
| Top | Bottom | Top | Bottom | |||||||||||
| 322-C0011B- | 322-C0011B- | |||||||||||||
| I | Upper Shikoku Basin | ***Drilled without coring*** | 0.00 | 340.00 | 340.00 | Pliocene? | — | — | Subunit IVA | Unit II | Unit III | Unit I | Unit I | |
| II | Middle Shikoku Basin tuffaceous sandstones, volcaniclastic sandstones | 1R-1, 0 | 17R-CC, 6 | 340.00 | 479.06 | 139.06 |
late Miocene (7.6–9.1 Ma) |
Silty claystone, tuffaceous sandstone, volcaniclastic sandstone | Hemipelagic settling and volcaniclastic turbidity currents in submarine fan system | NA | NA | NA | NA | Unit II |
| III | Lower Shikoku Basin hemipelagites | 17R-CC, 6 | 40R-2, 58 | 479.06 | 673.98 | 194.92 |
late–middle Miocene (9.1–12.3 Ma) |
Silty claystone and lime mudstone | Hemipelagic settling | Subunit IVB | Unit III | Unit IV | Unit II | Unit III |
| IV | Lower Shikoku Basin turbidites | 40R-2, 58 | 57R-3, 73 | 673.98 | 849.95 | 175.97 | middle Miocene (12.3–13.9 Ma) | Silty claystone, clayey siltstone, and silty sandstone | Hemipelagic settling and terrigenous turbidity currents in submarine fan system | NA | NA | NA | Unit III | Unit IV |
| V | Volcaniclastic-rich deposits | 57R-3, 74 | 61R-CC, 5 | 849.95 | 876.05 | 26.10 | middle Miocene (>13.9 Ma) | Silty claystone, tuffaceous claystone, and tuff | Hemipelagic settling, volcaniclastic turbidity currents, and air fall pyroclastic deposition | Unit V | Unit IV | Unit V | Unit IV | Unit V |
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