SITE SUMMARIES (continued)

Priority: 1
Position: 32°14.66'N, 135°01.51'E
Water Depth: 4790 m
Sediment Thickness: 710 m
Target Drilling Depth: 760 mbsf
Approved Maximum Penetration: 760 mbsf
Seismic Coverage: Fred Moore Line NT62-8, SP 1116 (common depth point [CDP] 45); 1999
3-D sesimic survey, Line 215, cross Line 244

Objectives: The objectives for Site 1173 are to

1. Determine the spatial distribution and temporal progression of deformation

2. Determine the structural and hydrologic evolution of the décollement zone

3. Determine the fluid flow paths and chemical gradients

4. Deploy ACORK instrumentation for further long-term hydrologic monitoring

5. Deploy a seismometer in the basement for further long-term hydrological and seismic monitoring (contingent upon funding and JOIDES advisory structure approval)

Logging and Downhole Tools: ADN and CDN, packer measurements in basement, if time permits

Nature of Section: Interbedded hemipelagic mud/silty-sandy turbidites, tuff, oceanic basalts