Velocity logging and seismic velocity of rocks in the Rainier Mesa area, Nevada Test Site, Nevada

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:7089609

Carroll, R D; Magner, J E

Velocity data obtained in 38 vertical drill holes in the Rainier and Aqueduct Mesa area were evaluated. Twenty-three geophone surveys and 20 acoustic logs were used to define the in-situ velocity of rocks in the region. The vertical velocity profile can be subdivided into the caprock; the unsaturated zone, the base of which is approximately defined by the top of pervasive zeolitization; the saturated zone of zeolitized rocks; and the pre-Tertiary clastic and carbonate rocks. Comparisons of geophone and acoustic log surveys indicate considerable positive drift (higher acoustic log velocity) in several holes, and none of the postulated causes (dispersion, geologic structure, data error, invasion) can be isolated.

• Research Organization: Geological Survey, Las Vegas, NV (USA)
• DOE Contract Number: AI08-86NV10583
• OSTI ID: 7089609
• Report Number(s): USGS-OFR-88-380; ON: TI89001653
• Country of Publication: United States
• Language: English

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58 GEOSCIENCES
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CALIPER LOGGING
DRILL CORES
GEOLOGIC FORMATIONS
GEOLOGIC SURVEYS
HYDROLOGY
NATIONAL ORGANIZATIONS
NEUTRON LOGGING
NEVADA TEST SITE
RADIOACTIVITY LOGGING
SEISMIC WAVES
SONIC LOGGING
SURVEYS
US DOE
US ORGANIZATIONS
VELOCITY
WAVE PROPAGATION
WELL LOGGING