Position: 24°32.71'N; 79°15.58'W
Water depth: 470 m
Sediment thickness: >8000 m
Total penetration: 852 mbsf (approved to a depth of 1050 mbsf)
Seismic coverage: High-resolution multichannel siesmic (MCS) survey, industrial seismic line
Objectives: The objectives of BT-2 are to:
1. obtain sedimentary record, determine the facies within the differing systems especially evaluate facies of lowstand vs. highstand deposits; and determine the nature of the unconformity at 0.85 s (twt);
2. refine the age of the seismic sequence boundaries;
3. retrieve material for a high-resolution isotope stratigraphy of the Neogene to Holocene; and
4. determine possible fluid flow through this portion of the margin
Hole A: APC/XCB to refusal.
Hole B: Core using APC.
Hole C: Wash down to XCB depth and RCB to 852 mbsf.
Logging and downhole: ADARA heat-flow 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 four logging strings (Quad-Combination, geochemical logging tool [GLT], the Formation MicroScanner [FMS]), and the geological high-sensitivity magnetic tool (GHMT), and a vertical seismic profile (VSP) experiment will be performed.
Nature of rock anticipated: Periplatform ooze occasionally mixed with coarser grained units.
TO Site F-3
166 Table of Contents