Site: PBS-4A

To Figure 12 for seismic cross section

Priority: 2 (alternate to PBS-3A).
Position: 67°07.92´S, 062°59.57´E
Water Depth: 555 m
Sediment Thickness: >1 km (ooze section 50 m)
Target Drilling Depth: ~50 mbsf
Approved Maximum Penetration: 50 mbsf
Seismic Coverage: AGSO 186/1901 SP 2901

Objectives: Same as PBS-3A

Drilling Program: Three APC holes to TD to provide a complete section

Logging Program: None

Nature of Rock Anticipated: Biosiliceous ooze, silt, clay, and ice-rafted pebbles

To 188 Site: PBS-5A

To 188 Table of Contents