|
Unit/
subunit |
Hole, core, section,
interval (cm) |
Depth
(mbsf) |
Thickness
(m) |
Age
|
Lithology
|
|---|---|---|---|---|---|
|
|
207- |
|
|
||
| I | 1257A-1H-1, through 1H-2, 7 | 0–1.57 | 1.57 | late Neogene | Nannofossil clay |
| IIA | 1257A-1H-1, 7, through 4H-2, 75 | 1.57–23.85 | 22.28 | early Oligocene | Nannofossil ooze with foraminifers; nannofossil chalk with foraminifers |
| IIB | 1257A-4H-2, 75, through 10X-3, 55 | 23.85–76.85 | 53.00 | early Oligocene–early Eocene | Siliceous nannofossil chalk with foraminifers to nannofossil chalk with siliceous microfossils and foraminifers |
|
|
1257B-1R-1, 0, through 6R-1, 0 | <40.00–78.70 | |||
|
|
1257C-1R-1, 0, through 1R-3, 95 | <82.00–85.95 |
|
|
|
| IIIA | 1257A-10X-3, 55, through 16X-CC, 63 | 76.85–140.70 | 66.80 | late Paleocene–middle Paleocene | Nannofossil chalk; foraminifer nannofossil chalk |
|
|
1257B-6R-1, 0, through 12R-7, 60 | 78.70–145.81 |
|
||
|
|
1257C-1R-3, 95, through 7R-5, 15 | 85.95–145.15 |
|
|
|
| IIIB | 1257A-16X-CC, 63, through 20X-4, 52 | 140.70–174.42 | 33.80 | early Maastrichtian–early Campanian | Foraminifer nannofossil chalk |
|
|
1257B-12R-7, 60, through 17R-1, 17 | 145.81–174.57 |
|
||
|
|
1257C-7R-5, 15, through 11R-1, 3 | 145.15–178.03 |
|
|
|
| IV | 1257A-20X-4, 52, through 26X-1, 0 | 174.42–226.80 | 52.60 | Santonian–middle Cenomanian | Calcareous claystone with organic matter; clayey chalk with organic matter; limestone |
|
|
1257B-17R-1, 17, through 25R-2, 112 | 174.57–217.60 | |||
|
|
1257C-11R-1, 3, through 15R-CC, 39 | 178.03–226.20 |
|
|
|
| V | 1257A-26X-1, 0, through 31X-CC, 56 | 226.80–284.67 | 47.20 | mid–late Albian | Silty calcareous claystone to clayey carbonate siltstone |
|
|
1257B-25R-2, 112, through 27R-CC, 22 | 217.60–227.30 |
|
|
|
|
|
1257C-15R-CC, 39, through 16R-CC, 18 | 226.20–235.88 |
|
|