Site: SCS-4

Track line for SCS-1 through SCS-5E
Seismic for SCS-4 (revised 1 February 1999)

Priority: 1
Position: 1927.24'N, 11615.84'E
Water Depth: 2093 m
Sediment Thickness: 1400 m
Approved Maximum Penetration: 520 m
Seismic Coverage: Intersection of SO-95 Profile 5

Objectives:

1.To recover a continuous sequence of hemipelagic sediments to reconstruct the middle Miocene to Pliocene paleomonsoon history.

2.To identify if monsoonal indices intensify or weaken during the middle to late Miocene as a test of monsoon evolution models.

3.To establish if Miocene-Pliocene pattern of accumulation rates are consistent with models of HTC uplift, monsoon intensification, and sea-level changes.

Drilling Program: Triple APC to refusal, XCB (possibly double XCB) to 520 mbsf

Logging and Downhole Operations: Triple-combo, GHMT, and sonic-FMS

Nature of Rock Anticipated: Hemipelagic mud and silt

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