Site summaries (continued)

Site U1379 (Proposed Site CRIS-4A)

Priority: Alternate
Position: 8°40.84962′N, 84°2.01690′W
Water depth (m): 127
Target drilling depth (mbsf): 1050 (850 m sediment, 200 m basement)
Approved maximum penetration (mbsf): 1050
Survey coverage: Line BGR 99-7 CMP 750
• Track map (Fig. AF1)
• Seismic profile (Fig. AF7)
• Location map (Fig. F6)
Objective: Alternate to CRIS-13B. Characterize upper plate basement and fluid flow.
Drilling, coring, and downhole measurements program: • Hole D: drill without recovery to 900 mbsf, RCB from 900 to 1050 mbsf.
• 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.