166 Prospectus

Site BT-10 (Alternate)

Priority: Secondary site (Alternate to BT-1)
Position: 24°36.40'N; 79°13.75'W
Water depth: 310 m
Sediment thickness: >8000 m
Total penetration: 960 mbsf (approved to a depth of 1160 mbsf)
Seismic coverage: High-resolution MCS survey

Objectives: The objectives of BT-10 are to:

1. date precisely sequence boundaries;

2. determine the facies within the different systems tracts, especially the nature of the onlapping units that are currently interpreted as lowstand deposits;

3. evaluate the fluid flow in this uppermost part of the slope; and

4. retrieve a high-resolution record of climate and sea-level fluctuations for the Quaternary and Late Pliocene.

Drilling program:
Holes A and B: Double APC/XCB to refusal
Hole C: Wash to XCB depth and RCB to a depth of 960 mbsf. A third APC to refusal will be drilled, if time permits.

Logging and downhole: ADARA heatflow measurements will be made on the first eight APC cores below Core 3 and one every third core thereafter. The hole will be logged using the three standard logging strings (Quad-Combination, GLT, and FMS).

Nature of rock anticipated: Periplatform ooze occasionally mixed with coarser grained units.

To Site BT-21

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