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SITE SUMMARIES (continued)

Site: HR6

Priority: Alternate

Position: 44.574176°N, 125.152910°W

Water Depth: 830 m

Sediment Thickness: ~7 km

Target Drilling Depth: 60 mbsf

Approved Maximum Penetration: 60 mbsf

Seismic Coverage: TTN112 3-D high-resolution seismic survey. Proposed site HR6 seismic is shown along with those for proposed sites HR4a-c.

Objectives: To test whether a "bright spot" on deep-towed seafloor reflectivity is a buried carbonate formation that may be an incipient "pinnacle."

Drilling Program: APC to refusal, XCB to refusal. Use of PCS and/or HYACE.

Logging and Downhole Program: LWD (if there is time), triple combo, APC-temperature, DVTP, APC methane tools.

Nature of Rock Anticipated: Interlayered silts and clays, some authigenic carbonates possible, highly deformed accretionary complex sediments.

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