Site summaries (continued)

Proposed Site GOA15-1A

Priority: Alternate
Position: 59°42.0600′N, 143°7.2012′W
Water depth (mbrf): 189
Target drilling depth (mbsf): 1158
Approved maximum penetration (mbsf): 1200
Survey coverage: Inline GOA2503 (CDP 2336), Xline GOA2502 (CDP 758) (navigation and bathymetric maps Figs. AF6, AF8; seismic profiles Figs. AF5, AF7)
Objective: Tectonic and climate history of the Bering Glacier and Trough
Drilling and coring program: • Hole A: APC to ~250 mbsf with non-magnetic core barrels, XCB to ~1158 mbsf
• See “Drilling and coring strategy” and Table T3
Downhole measurements program: • Wireline logging with triple combo, FMS-sonic, and VSI tool strings
• See “Downhole measurements strategy” and Table T3
Anticipated lithology: Mud, silt, fine sand, volcanic ash, ice-rafted debris, diamict