IODP

doi:10.2204/iodp.sp.324.2009

Site summaries (continued)

Proposed Site SRSH-6

Priority:
Primary site
Position:
34°25.320’N, 159°22.932’E
Water depth
(m):
3285
Target drilling
depth (mbsf):
277 (177 m sediment, 100 m basement)
Requested
maximum
penetration
(mbsf):
~477 (300 m basement)
Survey
coverage:
Cruise TN037, R/V Thomas Thompson
• Seismic Line 13 (time: 0225Z, 22 Aug 1994) (Figs. AF23, AF24)
• Track map (Fig. AF25, AF26)
Objective:
(see text
for details)
• Core igneous basement from the late stage of Southern High for petrographic, geochemical, isotopic, radiometric dating, and paleolatitude investigation.
• Determine the origin and emplacement history of Shatsky Rise basement rocks.
Drilling,
coring, and
downhole
measurement
program:
Hole A
• RCB wash to ~50 m above basement, core to TD or bit failure
• Wireline log (triple combo, FMS-Sonic)
Anticipated
lithology:
• 0–58 mbsf: pelagic ooze
• 58–177 mbsf: chalk with chert and limestone
• >177 mbsf: basalt