172 Scientific Prospectus


Site: BBOR-9

Priority: 1
Position: 31°41.415'N, 75°25.807'W
Water Depth: 2975 m
Sediment Thickness: 1000 m
Approved Maximum Penetration: 350 m
Seismic Coverage: CH1292 line 16 SCS, Fay 19 minisparker and SCS, V2807 SCS, KNR 140 3.5kHz

Objectives: The objectives of BBOR-9 are to:

1. Determine the history of circulation change in the deep western North Atlantic in the core of Lower NADW.

2. Test hypotheses about current-controlled sedimentation and sediment rain rates (combined with BBOR-6)

3. Determine a high-resolution history of paleomagnetic change

Drilling Program:
BBOR-6 and -9 are companion sites. BBOR-9 will be triple APC cored to 150 m

Logging and Downhole: None anticipated

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

To Site BR-1
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