Priority:
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Primary
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Position:
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56°26.1′N, 170°37.2′E (WGS 84) [Russia]
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Water depth (m)
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2232
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Target drilling depth (mbsf):
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200
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Approved maximum penetration (mbsf):
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200
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Previous drilling in area:
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DSDP Site 191 (farther southwest) and 192 (farther south)
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Comments
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Approved at relocated position at track time 8:20 on USNS Bartlett Cruise 02, Leg 055, 236 Day, 1970, 07:00–09:00 (EPSP December 2005)
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Survey coverage (track map, seismic profile); sediment cores:
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USNS Bartlett Cruise 02, Leg 055, 236 Day (1970) 14:00-13:15:
• Track maps (Figs. AF45, AF46, AF47)
• Single-channel seismic (Figs. AF48, AF49)
• Seismic velocity: DSDP Site 189 measurement; ref. interval velocity by USGS R/V Lee Cruise L6-80, Line 6
• Multiple cores (16 cm)
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Objective (see text for complete details):
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Monitor deep and intermediate water masses flowing out of the Bering Sea to the Pacific and surface conditions in the western Bering Sea.
Reconstruct Pliocene-Pleistocene high-resolution paleoceanography and investigate Bering/Arctic Gateway history and sea ice and water mass distribution in the northeast region.
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Drilling/coring program:
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Holes A, B, and D: APC with core orientation to 200 mbsf, Hole C to 25 mbsf
Temperature measurements: 3 APCT-3
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Downhole logging program:
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Wireline logging: triple combo, FMS-sonic
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Anticipated lithology:
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Hemipelagic silty clay with siliceous microfossils
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