Borehole Seismic Data

ODP logging contractor: LDEO-BRG

Hole: 1245E

Leg: 204

Location: Hydrate Ridge - Cascadia Margin (NE Pacific)

Latitude: 44° 35.1702' N

Longitude: 125° 8.9605' W

Logging date: August 14-16, 2002

Water depth (as seen on logs): 883.5 mbrf

Total penetration: 540.3 mbsf

Total core recovered: 18.5 m (27.7 %)

TOOL USED: QSST (Inline Checkshot Tool).

The logging data was recorded by Schlumberger in DLIS format. All processing, including first arrival picking and stacking, was performed by Schlumberger during Leg 204. The data was then converted into SEGY format at the Borehole Research Group of the Lamont-Doherty Earth Observatory, using the SEGY Save module in GeoFrame.

Stacks are generally calculated with at least seven good traces.

All the data in the SEGY files are sorted shot by shot (i.e. chronologically).

Gilles Guerin

Phone: 845-365-8671

Fax: 845-365-3182

E-mail: Gilles Guerin

Cristina Broglia

Phone: 845-365-8343

Fax: 845-365-3182

E-mail: Cristina Broglia