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Priority:
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Alternate
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Position:
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58°46.3476′N, 144°30.1200′W
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Water depth (mbrf):
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3701
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Target drilling depth (mbsf):
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962
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Approved maximum penetration (mbsf):
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1100
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Survey coverage:
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Inline GOA3201 (CDP 535), STEEP07 (CDP 3478), Xline STEEP13 (CDP 21728) (navigation and bathymetric maps Figs. AF12, AF13; seismic profiles Figs. AF14, AF16, AF17)
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Objective:
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• Tectonic and climate history of upper Surveyor Fan and origin of Surveyor Fan sequence boundaries
• 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 to ~200 mbsf with non-magnetic core barrels
• Hole D: APC/XCB to 962 mbsf
• 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 D: 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
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