Table T1. The oldest crust drilled by ODP in the different ocean basins.
| Leg 185, Site 801: West Pacific, Pigafetta Basin |
|---|
| Water depth (m): 5674 |
| Total depth (m): 6609.7 |
| Penetration (m): 935.7 |
| Basement (mbsf): 461.6 |
| Basement penetration (m): 474.1 |
| Magnetic lineation: >M36 |
| Oldest sediment: Bajocian-Bathonian (166 Ma) |
| Basement age: Alkalic cap (155 Ma) |
| Tholeiites: >155 <171 Ma |
| The oldest basement drilled in the oceans. |
|
Leg 76, Site 534: West Atlantic, Blake-Bahama Basin |
| Water depth (m): 4973 |
| Total depth (m): 6639.5 |
| Penetration (m): 1666.5 |
| Magnetic lineation: M28 |
| Oldest sediment: mid-Callovian (~155 Ma) |
| Basement: core catcher, no radiometric age |
| The oldest Atlantic basement drilled. |
| The deepest penetration. |
| Leg 123, Site 765: Argo Abyssal Plain, Indian Ocean |
| Water depth (m): 5713.8 |
| Total depth (m): 6908.7 |
| Penetration (m): 1194.9 |
| Casing string (m): 937 |
| Basement (mbsf): 947.9 |
| Basement penetration (m): 247 |
| Magnetic lineation: M25a |
| Oldest sediment: early Berriasian (140 Ma) |
| Basement age: >156 Ma; Ar/Ar fusion |
| Celadonite age: 155 Ma; K/Ar |
| The oldest Indian Ocean basement drilled. |
| The greatest total depth. |