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
