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.
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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