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doi:10.2204/iodp.sp.311.2005
Site CAS-02C
Proposed site:
CAS-02C
Priority:
Primary
Position:
48°38.688'N, 126°58.993'W
Water depth (m):
2230
Target drilling depth (mbsf):
300
Approved maximum penetration (mbsf):
300
Survey coverage:
Regional site survey lines
Objective:
Site CAS-02C is located within the first slope basin along the transect eastward of the deformation front. A BSR is located at 290 ms TWT (~230 mbsf). The BSR reflection strength is frequency dependent. The low-frequency data of Line 89-08 (~40 Hz) show a much stronger and continuous reflection than the high-frequency MCS data from 1999 (~100 Hz).
The objective is to determine the nature of the BSR reflection and the thickness of the free gas zone (if any) underneath the BSR by wireline and LWD logging.
Drilling and Logging program
APC to refusal; XCB; PCS and HYACINTH pending funding) pressure cores
Logging program
LWD, triple combo, FMS-sonic, multiple use of APCT, DVTPP
Nature of rock anticipated:
Interlayered silts and clays, some authigenic carbonates possible