Site Summaries: Site 683 | Table of Contents

Site Summaries

Site: ODP Site 688

Priority: Alternate
Position: 11°32.28'S, 78°56.65'W
Water Depth: 3826 m
Sediment Thickness: >429 m
Target Drilling Depth: 429 m
Approved Maximum Penetration: Requested same maximum penetration as for Leg 112.
Seismic Coverage: Shell MCS line P1017 at CDP 1975.
See seismic line.

Objective: Compare this site with 2% to 9% organic carbon and very high levels of dissolved ammonium, which is probably the most microbiologically active we are likely to encounter with an ODP expedition with other continental margin sites occupied during this expedition.

Drilling Program: TBD

Logging and Downhole Program: TBD

Nature of Rock Anticipated: Diatomaceous mud, mudstone, siliceous ooze, calcareous ooze, sand, silt, and siltstone.

Site Summaries: Site 683 | Table of Contents