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Shallow geophysical survey across the Pahrump Valley Fault Zone, California-Nevada border
Author
Shields, GordonAllander, Kip
Brigham, Russell
Crosbie, Ryan
Trimble, Lorenzo
Sleeman, Mike
Tucker, Richard
Zhan, Hongbin
Louie, John N.
Date
2/1/1998Type
CitationThe full text of the article is available at:
Abstract
We employ seismic reflection, magnetics, and electromagnetics to locate precisely the southern extension of the Pahrump Valley Fault Zone (PVFZ) and examine its subsurface geometry. The southern extension of the PVFZ is active and represents a potential seismic hazard for Las Vegas. We observe pronounced magnetic and conductivity anomalies, and truncations of reflectors in the seismic profiles coincident with one of three Holocene scarps in southern Pahrump Valley. These geophysical techniques in combination can locate faults more precisely than the presence of eroded scarps.