Site summaries (continued)

Proposed Site CRIS-15B

Priority: Alternate
Position: 8°42.77840′N, 84° 8.76753′W
Water depth (m): 678
Target drilling depth (mbsf): 1500 (1425 m sediment, 75 m basement)
Approved maximum penetration (mbsf): 1500
Survey coverage: Inline 1160, Xline 2025
• Track map (Fig. AF1)
• Seismic profile (Fig. AF9)
• Location map (Fig. F6)
Objective: Alternate for CRIS-13B. Characterize upper plate basement and fluid flow.
Drilling, coring, and downhole measurements program: • Hole A: APC/XCB to 800 mbsf.
• Hole B: drill without recovery to 790 mbsf, RCB from 790 to 1500 mbsf.
• Formation temperature measurements (APCT-3/SET).
• FlexIt core orientation measurements.
• Wireline logging (triple combo-UBI, FMS-sonic, VSI).
Nature of rock anticipated: Sediments: mud and silt, mud-supported breccia. Basement: shaly matrix breccia with carbonate, cherty, and basaltic clasts.