To PBF-6A Line AGSO 49/0901
Position: 66°24.036´S, 072°17.064´E
Water Depth: 1695 m
Sediment Thickness: >2 km
Target Drilling Depth: ~620 mbsf
Approved Maximum Penetration: 620 mbsf
Seismic Coverage: AGSO 149/0901, SP 3957; AGSO 186/2300 SP 545
Objective: Document the number of major advances of the East Antarctic Ice Sheet to the shelf edge since late Miocene to middle Pliocene time by coring a succession of sediments comprised of siliciclastic intervals deposited by output from the Lambert Glacier when it was grounded at or near the shelf edge. The siliciclastic intervals are separated by ooze and hemipelagic mud deposited when the ice was further inshore.
Drilling Program: APC Hole A to refusal (~150 mbsf), continue with XCB to refusal (~350 mbsf) then RCB Hole B to ~620 mbsf.
Logging Program: Quad Combo (BHC, HLDT, DITE, and sonic) and GHMT; LWD-light
Nature of Rock Anticipated: Mud, ooze, diamict, and sand interbeds
To 188 Site: PBS-2A
To 188 Table of Contents