Priority:
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Primary
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Position:
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57°33.4′N, 175°49.0′W (WGS 84)
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Water depth (m)
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1975
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Target drilling depth (mbsf):
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700
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Approved maximum penetration (mbsf):
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745
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Previous drilling in area:
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None
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Comments:
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Relocated from GAT-4B to Shotpoint 351 on Cruise KH99-3, 1999, Line Stk-1 (EPSP December 2005)
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Survey coverage (track map, seismic profile); sediment cores:
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R/V Hakuhou-maru Cruise KH99-3 Leg 3 (1999):
• Location and track maps (Figs. AF25, AF26, AF27)
• MCS profile: Line Stk1 (SW–NE)
• Crossing Line Stk2 (SE–NW) (Figs. AF28, AF29, AF30, AF31)
• 3.5 kHz: Line Stk1 (SW–NE) (Fig. AF32)
• Swath bathymetry: Lines Stk1 (SW–NE) and Stk2 (SE–NW) (Fig. AF33)
• Multiple cores (16 cm)
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Objective (see text for complete details):
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Tripe APC to refusal, XCB and RCB if needed:
• Holes A, B, C: APC with core orientation to refusal (~200 mbsf)
• Hole C: XCB to ~500 mbsf
• Hole D: APC to 25 mbsf
• Hole E: drill to ~500 mbsf, RCB to ~700 mbsf
Temperature measurements: 3 APCT-3, 2 DVTP if required
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Drilling/coring program:
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See BOW-12B
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Downhole logging program:
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Wireline logging: triple combo, FMS-sonic, possible check shot survey
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Anticipated lithology:
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Hemipelagic silty clay with siliceous and calcareous microfossils
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