Priority: 2 (alternate to APSHE-05A)
Position: 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
