IODP

doi:10.2204/iodp.sp.317.2009

Site summaries (continued)

Proposed Site CB-03A
Priority:
Alternate for CB-03B
Position:
44°53.4453´S, 171°50.9851´E
Water depth (m):
125
Target drilling depth (mbsf):
1318
Approved maximum penetration (mbsf):
1318
Survey coverage:
EW00-01-66 (CDP 4139), EW00-01-13 (CDP 12117)
• Track map (Fig. AF1)
• Seismic profile (Fig. AF7)
• Location map (Fig. F3)
• MCS profile EW00-01-66 (Fig. F7)
Objective (see text for details):
Sample facies landward of, but close to, clinoform breakpoints of progradational sequence boundaries, particularly Unconformities U8–U19 and slope facies of Unconformities U4–U7 (middle Miocene to Holocene)
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 1318 mbsf
• Wireline log (triple combo, FMS-sonic)
• VSP with VSI
Alternative: Hole A
• RCB to 1318 mbsf
• Wireline log (triple combo, FMS-sonic)
• VSP with VSI
Anticipated lithology:
0–1318 mbsf: Terrigenous siltstone and silty mudstone with intervals of fine-grained sand and mud