IODP

doi:10.2204/iodp.sp.315.2007

Site summaries

Proposed Site NT1-01A
Priority:
Primary:
Chikyu Expedition 314 (LWD)
Alternate:
• Other Stage 1 expeditions
Position:
32°44.8878′N, 136°55.0236′E
Water Depth (m):
3610
Target drilling depth (mbsf):
600 m sediment (Stage 1)
Approved maximum penetration (mbsf):
800; approved by CDEX and TAMU safety panels based on EPSP Jan 2007 recommendation
Survey coverage:
Extensive survey data outlined in Proposal 603A-Full2 (www.iodp.org/nantroseize-downloads):
• Track maps (Figs. AF1, AF4)
• Line odkm 03-AB SP 2795 (Fig. AF2)
• CrossLine odkm 03-22 SP 1685 (Fig. AF3)
• IFREE 3-D Inline 95 (Fig. AF5, AF6)
Objective
(see text for full details):
Reference site:
• Penetrate entire sedimentary section and into oceanic crust
• Document lithologic, hydrologic, thermal, and geotechnical properties of subduction inputs
• Log-seismic integration
Drilling, coring, and downhole measurement program:
Chikyu Expedition 314:
Hole A: MWD/LWD
Anticipated lithology:
0–600 mbsf: Shikoku Basin hemipelagic sediments
600–800 mbsf: volcaniclastic sediments and basalt