Borehole Seismic Data

ODP logging contractor: LDEO-BRG

Well name: 504B

Leg: 111

Location: Costa Rica Rift (tropical NE Pacific)

Latitude: 1°13.611' N

Longitude: 83°43.818' W

Logging date: September, 1986

Bottom felt: 3474 mbrf (used for depth shift to sea floor)

Total penetration: 1562.3 mbsf

Total core recovered: 26.4 m (12.6 %)

TOOL USED: WST (Well Seismic Tool)

The logging data was recorded by Schlumberger in LIS format. All processing, including first arrival picking and stacking, was performed by Schlumberger during Leg 111. The data was then converted into SEGY format at the Schlumberger processing center.

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