Priority:
|
Primary site
|
Position:
|
36°06.944’N, 158°27.526’E
|
Water depth
(m):
|
3148
|
Target drilling
depth (mbsf):
|
384 (184 m sediment, 200 m basement)
|
Requested
maximum
penetration
(mbsf):
|
~484 (300 m basement)
|
Survey
coverage:
|
Cruise TN037, R/V Thomas Thompson
• Seismic Line 8 (time: 0005Z, 15 Aug 1994) (Fig. AF6)
• Track map (Figs. AF3, AF4)
|
Objective:
(see text
for details)
|
• Core igneous basement from Central High summit 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 (possibly two bits needed and FFF deployment?)
• Wireline log (triple combo, FMS-Sonic)
|
Anticipated
lithology:
|
• 0-54 mbsf: pelagic ooze
• 54–184 mbsf: chalk with chert
• >184 mbsf: basalt
|
