Priority:
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Primary
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Position:
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66°24.8′S, 140°25.5′E
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Water depth (m):
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1010
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Target drilling depth (mbsf):
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190
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Approved maximum penetration (mbsf):
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• 250 (approved by TAMU safety panels based on EPSP Dec 2005 recommendation)
• Limit penetration to Holocene drift
• Terminate when drilling encounters glacial diamict but no more than 250 mbsf
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Survey coverage:
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• Site survey data outlined in Proposal 638-APL2 (available at
iodp.tamu.edu/scienceops/expeditions/wilkes_land.html)
• Track map (Fig. F15)
• Seismic profile (Figs. F8, F16, F17)
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Objective
(see text for full details):
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Ultrahigh resolution of Holocene climate
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Drilling, coring, and downhole measurement program:
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• Hole A: APC to total depth; XCB one core of diamict; APC core orientation and formation temperature measurements
• Hole B: APC to total depth; APC core orientation
• Hole C: APC to total depth; APC core orientation; possibly wireline log (triple combo, FMS-sonic)
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Anticipated lithology:
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• 0–200 mbsf: very soft Holocene diatom ooze
• >200 mbsf: glacial diamict
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