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Priority:
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Alternate
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Position:
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56°57.3852′N, 147°8.2545′W
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Water depth (mbrf):
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4229
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Target drilling depth (mbsf):
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780 (sediment/basalt interface at 777 mbsf)
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Approved maximum penetration (mbsf):
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856
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Survey coverage:
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Inline MGL1109MCS01 (Shotpoint 1423), Xline L-6-81 line 678-04/05 (JD157 06:37) (navigation and bathymetric maps Figs. AF18, AF19; seismic profiles Figs. AF21, AF22)
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Objective:
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• Tectonic and climate history from 10 Ma to recent
• Provenance of unroofed sediments
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Drilling and coring program:
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• Hole A: APC to ~200 mbsf with non-magnetic core barrels and core orientation
• Hole B: APC to ~200 mbsf with non-magnetic core barrels
• Hole C: APC/XCB to 780 mbsf with non-magnetic core barrels
• Hole D: APC/XCB to 500 mbsf with non-magnetic core barrels
• See “Drilling and coring strategy” and Table T2
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Downhole measurements program:
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• Hole A: APCT-3 (SET if needed) formation temperature measurements
• Hole C: wireline logging with triple combo, FMS-sonic, VSI, and Magnetic Properties tool strings
• See “Downhole measurements strategy” and Table T2
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Anticipated lithology:
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Mud (possibly diatom rich), silt, fine sand, volcanic ash, ice-rafted debris, basalt
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