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doi:10.2204/iodp.sp.304305.2004

SITE SUMMARIES (continued)

Site: AMHW-01A
Priority:
 		1
Position:
30.19°N, 42.06°W
Water depth (m):
 		2580
Sediment thickness (m):
1–2
Target drilling depth (mbsf):
>400 through detachment fault
Approved maximum penetration (mbsf):
 		700
Survey coverage:
 		Multichannel seismic data collected by the Ewing (EW-0102) in 2001 using a 10-gun array with 3100 in3 (51 L) capacity.
Shot spacing = 37.5 m.
The 6 km streamer had 480 channels, and data were sampled every 4 ms.
(See Fig. F6)
Objectives:
 		Core through basalt carapace overlying detachment fault.
 Continue through fault zone as deep as possible.
Drilling program:
  • Install hard rock reentry system to
  • Rotary core to
  • Advanced diamond core to
  • Open hole and install casing to
  • Core as deep as possible through detachment fault
     See "Primary Site: Proposed Site AMHW-01A"
    • Logging program:
         		Three logging runs:
  • Triple combination tool string
  • Formation MicroScanner/Dipole Sonic Imager tool string
  • Ultrasonic Borehole Imager
    • Nature of rock anticipated:
         		Basalt, fault gouge, serpentinized peridotite, gabbro

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