171A Scientific Prospectus

Site: NBR-8A (alternate to proposed Site NBR-5A)

Priority: 2

Position: 15°32.21'N, 58°43.39'W

Water Depth: 4756 m

Sediment Thickness: 800 m

Total Penetration: 800 mbsf

Seismic Coverage: 3-D survey, Line 736 SP-1165
East-west seismic profile through Site NBR-8A; VE: 3.7.

Objectives: The objectives of proposed Site NBR-8A are identical to those of Site NBR-5A.

Drilling Program: No cores.

Logging and Downhole: LWD.

Nature of Rock Anticipated: Pelagic and hemipelagic sediments, local distal turbidites in the underthrust section.

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