SITE SUMMARIES
Site: HE-1B
Priority: 1 (primary)
Position: 52°53'N, 164°35'E
Water Depth: 3200 m
Sediment Thickness: 1000 m
Target Drilling Depth: 950 m
Approved Maximum Penetration: 950 mbsf
Seismic Coverage: Glomar Challenger Leg 19 0500 UTC
See seismic line for Site HE-1A
Objectives: The objectives of Site HE-1B are to:
2. Determine the geochemical signature of the oldest part of the Hawaiian-Emperor chain
3. Determine the nature of the Late Cretaceous time-averaged geomagnetic field
4. Determine the Late Cretaceous paleointensity of the geomagnetic field
5. Recover a North Pacific Paleogene paleoceanographic record
Drilling Program: RCB
Logging and Downhole: Triple combo, FMS
Nature of Rock Anticipated: Silty clay, diatom ooze, volcanic ash beds, claystone, minor calcareous layers, chalk, minor sand beds, and basalt
