SITE SUMMARIES

Priority: 2 (alternate)
Position: 34°54.32'N, 171°33.67'E
Water Depth: 1454 m
Sediment Thickness: 80 m
Target Drilling Depth: >230 m
Approved Maximum Penetration: 380 mbsf
Seismic Coverage: Glomar Challenger Leg 32 Sept 17, '73 0630 UTC

See seismic line for Site HE-6A

Objectives: The objectives of Site HE-6B are to:

1.Obtain a paleolatitude and age of Koko Seamount to investigate processes responsible for Late Cretaceous-Early Tertiary differences between paleomagnetic data and predictions based on the Hawaiian-Emperor chain

2. Determine the geochemical signature of Koko Seamount

3. Determine the nature of the time-averaged geomagnetic field

4. Determine the paleointensity of the geomagnetic field

Drilling Program: RCB

Logging and Downhole: Triple combo, FMS, third-party magnetic tool

Nature of Rock Anticipated: Altered volcanic silt to biogenic volcanic sand, and alkali and tholeiitic basalt