167 Prospectus

SITE CA-4A

LOCATION: Eastern flank, Gorda Ridge

PRIORITY: 1

POSITION: 41° 00.50' N 126° 26.05' W (W9406 CA4 line 4 shotpoint 690 )

WATER DEPTH: 3075 m

SEDIMENT THICKNESS: 0.345 sec (270 m)

TOTAL PENETRATION: 275 m

SEISMIC COVERAGE: W9406 CA4 surveys; miscellaneous regional

OBJECTIVES: Gorda Transect, northern depth transect. To sample high-resolution

5.1-Ma to Holocene hemipelagic sediments at a moderate water depth.

DRILLING PROGRAM: 2 APCs to refusal, third APC to 50 m or longer if time

available. XCB to total penetration, including minor basement sampling.

LOGGING AND DOWNHOLE OPERATIONS: Second priority logging objective. Standard

Quad Combo, FMS, and GHMT magnetic log if time permits.

NATURE OF ROCK ANTICIPATED: Hemipelagic sediments over MORB basalt.