Site: APSHE-10A

Priority: 2 (alternate to APSHE-05A)
Position: 63°59.97'S, 65°27.92'W
Water Depth: 510 m
Sediment Thickness: >2000 m
Approved Maximum Penetration: 650 mbsf
Seismic Coverage: Site located at SP 1707 of Line AI95-152; also on Line AMG 845-08; 7675 m off the site, SP 1400 of Line AI95-152 intersects SP 1500 of Line AMG 845-10. Intersect on site AI97-H231 SP 3491.

Objectives: The objectives of Site APSHE-10A are to:

1. Examine "pre-glacial" (S3) lithologies in detail and test the synchroneity of the conformable S3/S2 boundary along the margin.

2. Sample the near-conformable (probably tectonic) S3/S4 boundary.

3. Test hypotheses of the "pre-glacial" nature of S3 and of the uplift/subsidence origin of the S4/S3 boundary.

Drilling Program: Single RCB hole.

Logging and Downhole Operations: Standard suites IPLT-DLT and FMS-sonic, plus GHMT.

Nature of Rock Anticipated: Diamicton intercalated with thin hemipelagic layers down to S1/S3 boundary. Hemipelagic or terrigenous sediments down to S3/S4 boundary. Volcaniclastics below S3/S4 boundary.

Note: seismic line same as Site APSHE-01A

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