Abstract
We present data and preliminary results of the 1986 Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) Basin and Range Lithospheric Seismic Experiment. This prototypical unified seismic experiment contained both active and passive elements: coincident reflection and three‐component refraction data, earthquakes from the 1986 Chalfant, Calif., aftershock sequence, and a nuclear explosion were recorded. Our primary scientific goal is an integrated analysis of these data by a variety of interpretational techniques to improve our understanding of the composition and tectonics of the northwestern Basin and Range province, a major continental rift zone. Secondary seismological objectives included strong ground motion studies, a comparison of Vibroseis™ and explosion sources, and a study of the influence of shot size on frequency content. The data are of high quality and provide detailed information on the structure and velocity distribution of the lithosphere.
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