We measure apparent conductivity averaged over a depth of 3 to 6 m, and total-field ground magnetism. The seismic profiles employ a high-resolution hammer technique. We use a Worden gravimeter for the gravity survey. Photos showing UNR Geology students in the field working on the seismic line. Location map showing Pahrump Valley, with approximate location of survey line marked in red.
Dark lines show mapped or inferred faults, while the shaded line shows a hypothesized shear zone.
Taken from Hoffard, 1991. Combined plot of magnetic and gravity data across Pahrump Valley with topography. Vertical shaded lines show the location of the PVFZ scarps. Combined plot of magnetic and conductivity data across the PVFZ scarps with topography. The magnetic and conductivity anomalies correlate well with the scarp 1, and are present though less pronounced at scarps 2 and 3.