Site: APSHE-06A

Priority: 2 (alternate to APSHE-05A)
66°30.05'S, 70°25.8'W
Water Depth:
600 m
Sediment Thickness:
>2000 m
Approved Maximum Penetration:
505 mbsf
Seismic Coverage:
Site located on Line PD88-04 (0500/002). Approximately 3 km from the site, this Line PD88-04 intersects Line BAS878-021 at SP 2430.

Objectives: The objectives of Site APSHE-06A 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 (lodgement till and proximal glacial marine) with thin biosiliceous interbeds to base of S2 (i.e., top ~150 m), then uncertain (glacial marine diamicton or biosiliceous hemipelagic) from S3 to base of hole.

Note: seismic line same as Site APSHE-05A

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