IODP

doi:10.2204/iodp.sp.317.2009

Site summaries (continued)

Proposed Site CB-05B
Priority:
Global alternate
Position:
44°41.6069´S, 172°32.1071´E
Water depth (m):
390
Target drilling depth (mbsf):
1783
Approved maximum penetration (mbsf):
1783
Survey coverage:
EW00-01-14 (CDP 6667), EW00-01-23 (CDP 3020)
• Track map (Fig. AF12)
• Seismic profile (Fig. AF13)
• Location map (Fig. F3)
Objective (see text for details):
Sample current-deposited sediments on the slope, particularly large sediment Drift D11 (late Miocene to early Pliocene)
Sample Marshall Paraconformity and top of Amuri Limestone (late Eocene to early Oligocene)
Drilling, coring, and downhole measurement program:
Hole A
• APC/XCB to refusal (APC core orientation)
• Wireline log (triple combo, FMS-sonic)
• VSP with VSI
Hole B
• Drill without coring to APC refusal depth
• RCB coring to 1783 mbsf
• Wireline log (triple combo, FMS-sonic)
• VSP with VSI
Anticipated lithology:
0–1598 mbsf: Terrigenous siltstone and silty mudstone with intervals of fine-grained sand and mud
1598 mbsf (or slightly shallower)–1783 mbsf: Limestone