IODP

doi:10.2204/iodp.sp.317.2009

Site summaries (continued)

Proposed Site CB-02B
Priority:
Alternate for CB-02A
Position:
44°51.8507´S, 171°48.6836´E
Water depth (m):
116
Target drilling depth (mbsf):
918
Approved maximum penetration (mbsf):
918
Survey coverage:
EW00-01-66 (CDP 4816), EW00-01-09 (CDP 14229)
• Track map (Fig. AF1)
• Seismic profile (Fig. AF6)
• Location map (Fig. F3)
• MCS profile EW00-01-66 (Fig. F7)
Objective (see text for details):
Sample facies landward of clinoform breakpoints of progradational sequence boundaries, particularly near breakpoints of Unconformities U7–U9 and Unconformity U6 slope (late Miocene to Pliocene)
Drilling, coring, and downhole measurement program:
Hole A
• APC/XCB to refusal (APC core orientation)
Hole B
• Drill without coring to APC refusal depth
• RCB coring to 918 mbsf
• Wireline log (triple combo, FMS-sonic)
• VSP with VSI
Alternative: Hole A
• RCB to 918 mbsf
• Wireline log (triple combo, FMS-sonic)
• VSP with VSI
Anticipated lithology:
0–918 mbsf: Terrigenous siltstone and silty mudstone with intervals of fine-grained sand and mud