Water depth (m): 5674
Total depth (m): 6620.7
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: mid-Jurassic, 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

Oldest Atlantic basement drilled
The deepest penetration

Leg 123, Site 765: Argo Abyssal Plain, Indian Ocean

Water depth (m): 5713.8
Total depth (m): 6919.2
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

To 185 Table 2