Priority:
|
Alternate site
|
Position:
|
36°04.492’N, 159°17.065’E
|
Water depth
(m):
|
4079
|
Target drilling
depth (mbsf):
|
377 (177 m sediment, 200 m basement)
|
Requested
maximum
penetration
(mbsf):
|
~477 (300 m basement)
|
Survey
coverage:
|
Cruise TN037, R/V Thomas Thompson
• Seismic Line 8 (time: 1537Z, 14 Aug 1994) (Fig. AF5)
• Track map (Fig. AF3)
|
Objective:
(see text
for details)
|
• Core igneous basement from the lower flank of Central 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, coring to TD (possible need for second bit and FFF deployment?)
• Wireline log (triple combo, FMS-Sonic)
|
Anticipated
lithology:
|
• 0–21 mbsf: pelagic ooze
• 21–177 mbsf: chalk with chert
• >177 mbsf: basalt
|
