Priority:
|
Primary site
|
Position:
|
31°05.752’N, 156°55.981’E
|
Water depth
(m):
|
4670
|
Target drilling
depth (mbsf):
|
255 (155 m sediment, 100 m basement)
|
Requested
maximum
penetration
(mbsf):
|
~455 (300 m basement)
|
Survey
coverage:
|
Cruise TN037, R/V Thomas Thompson
• Seismic Line 17C (time: 1814Z, 28 Aug 1994) (Fig. AF28)
• Track map (Fig. AF13)
|
Objective:
(see text
for details)
|
• Core igneous basement from the oldest part of Shatsky Rise (southwest flank 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:
|
• 0–116 mbsf: pelagic ooze
• 116–155 mbsf: chalk with chert
• >155 mbsf: basalt
|
