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Priority:
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Alternate
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Position:
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56°56.3571′N, 147°22.3703′W
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Water depth (mbrf):
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4273
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Target drilling depth (mbsf):
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758 (sediment/basalt interface at 755 mbsf)
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Approved maximum penetration (mbsf):
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834 (pending EPSP review)
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Survey coverage:
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Inline MGL1109MCS01 (Shotpoint 1720), Xline F-6-89 line 13 (CDP 5380) (navigation and bathymetric maps Figs. AF18, AF20; seismic profiles Figs. AF21, AF23)
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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 758 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 T3
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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 T3
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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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