Site summaries

Proposed Site CRIS-3B

Priority: Primary
Position: 8.592356°N, 84.077177°W
Water depth (m): 538
Target drilling depth (mbsf): 950
Approved maximum penetration (mbsf): 1000
Survey coverage: BGR 99-7 common midpoint (CMP) 2500
• Track map (Fig. AF1)
• Seismic profile (Fig. AF2)
• Location map (Fig. F2)
Objective: Characterize upper plate basement and fluid flow.
Drilling and logging program: • APC to refusal, then XCB to 500 mbsf.
• RCB from 490 to 950 mbsf.
• Conduct wireline logging or LWD/LWC and VSI.
Nature of rock anticipated: Sediments: mud and silt, mud-supported breccia Basement: shaly matrix breccia with carbonate, cherty, and basaltic clasts