Site:
|
1138
|
1139
|
1140
|
|---|---|---|---|
| Geography (Fig. F1): | Central Kerguelen Plateau, 180 km east-southeast of Heard Island | 350 km west-southwest of the Kerguelen archipelago, Skiff Bank (Leclaire Rise) | Northernmost Kerguelen Plateau, 270 km north of the Kerguelen archipelago |
| Core depth (mbsf): | 842.7 | 694.2 | 321.9 |
| Water depth (m): | 1141 | 1415 | 2394 |
| Basement: | Basalts overlain by volcaniclastic rock layers were recovered below 689 mbsf from the lower 144 m of the hole; age: Late Cretaceous | Altered volcaniclastic rocks, basalts, and one minor sedimentary bed from the lower 233 m of the hole; age: late Eocene? | Pillow basalts on three minor sediment beds from the lower 87.38 m of the hole; age: late Eocene-early Oligocene |
| Sediments recovered down to (mbsf): | 689 | 461 | 234 |
| Sedimentology: | 655-m pelagic ooze, chalk, and calcareous claystone overlying 43 m of glauconitic calcareous sandstone and silty clay interbedded with sandstone and conglomerate | 383-m calcareous claystone and chalk with thin intervals of calcareous ooze and chalk at the top and base overlying a <10-m interval of sandy packstone and 77-m grainstone | Pelagic ooze and chalk, whole sedimentary section |
| Eocene/Oligocene (Fig. F2): | Base of Core 183-1138A-36R | Sections 183-1139A-38R-2 to 41R-1 | Cores 183-1140A-37R to 26R |
Note: All data are from Shipboard Scientific Party (2000) except Eocene/Oligocene data for Holes 1138A and 1139A.