172 Scientific Prospectus


Site: BBOR-7A

Priority: 1
Position: 32°01.00'N, 76°04.00'W
Water Depth: 2585 m
Sediment Thickness: 1000 m
Approved Maximum Penetration: 200 m
Seismic Coverage: V2807, Farnella 87-1 line 18, KNR 140 3.5kHz

Objectives: The objectives of BBOR-7A are to:

1.Determine the history of circulation change in the deep western North Atlantic near the boundary between Lower and Upper NADW.

2.Determine a high-resolution history of paleomagnetic change

Drilling Program:
Triple APC to 100 m

Logging and Downhole:
None anticipated

Nature of Rock Anticipated: Foraminifer-bearing silty clay and nannofossil marl

To Site BBOR-8C
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