SITE SUMMARIES

Priority: 2 (alternate)
Position: 50°41.98'N, 167°9.26'E
Water Depth: 2617 m
Sediment Thickness: 360 m
Target Drilling Depth: >510 m
Approved Maximum Penetration: 660 mbsf
Seismic Coverage: F2AA87 (Faranella) CDP 3600

Seismic line for Site HE-2A

Objectives: The objectives of Site HE-2A are to:

1.Obtain a paleolatitude and age estimate for Detroit Seamount with enough independent time units (> 15) to provide increased resolution in tests of the fixed-hotspot hypothesis

2. Determine the geochemical signature of the Detroit Seamount

3. Determine the nature of the geomagnetic field

4. Determine the paleointensity of the time-averaged geomagnetic field

5. Constrain downhole magnetic structure through borehole magnetic logging

Drilling Program: RCB

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

Nature of Rock Anticipated: diatom ooze and alkali and trachy basalt flows