ODP logging contractor: LDEO-BRG
Hole: 1256D
Leg: 206
Location: Guatemala Basin (NE equatorial Pacific)
Latitude: 6° 44.163' N
Longitude: 91° 56.061' W
Logging date: December 28-30, 2002
Bottom felt: 3645.4 mbrf
Total penetration: 752 mbsf
Total core recovered: 227.3 (47.8%)

VSP TOOL USED: WST (Well Seismic Tool)

Acquisition Break Time: Time between start of recording and first break

Acquisition Transit Time: Time between shot firing (as recorded by blast phone) and first break. The shot is fired ~12 milliseconds after start of recording. The difference between Acquisition Break Time and Acquisition Transit Time is not constant and varies for each shot.

VSP STACKS SUMMARY LISTING (one-way transit times)

DEPTH ACQUISITION_ ACQUISITION_  ACQUISITION_     
(mbsf) SHOT_TIME   BREAK_TIME    TRANSIT_TIME       
                     (s)             (s)               
728.5	30-12-2002:03:22:57	2.691	2.680256
699.0	30-12-2002:03:31:35	2.686	2.674637
659.1	30-12-2002:03:41:07	2.678	2.667263
609.0	30-12-2002:03:48:28	2.667	2.65627
569.0	30-12-2002:03:55:49	2.661	2.649661
519.0	30-12-2002:04:05:42	2.651	2.639614
479.0	30-12-2002:04:13:39	2.641	2.630252
444.0	30-12-2002:04:19:42	2.634	2.623273
409.1	30-12-2002:04:24:47	2.626	2.615263
374.0	30-12-2002:04:33:03	2.617	2.605624
334.0	30-12-2002:04:38:35	2.608	2.597258
294.0	30-12-2002:04:46:04	2.601	2.590309