Southern Sierra Nevada Continental Dynamics Project: 1993 field observations of the NPE
- Univ. of Texas, El Paso, TX (United States)
- Duke Univ., Durham, NC (United States)
- LLNL, Livermore, CA (United States)
The Southern Sierra Nevada Continental Dynamics Project is a multidisciplinary, multi-institutional investigation of the cause of the uplift of the Sierra Nevada and its relationship to extension in the adjacent Basin and Range. A broad range of geologic and geophysical data have been collected as part of this project. These data include both passive and active seismic measurements, as well as gravity and magnetotelluric observations. Three seismic refraction/wide-angle reflection profiles were recorded: (1) a 325-km-long, north-south profile extending from just east of Mono Lake south across the Garlock fault, (2) a 400-km-long, east-west profile extending from Death Valley west across the Sierra Nevada to near the San Andreas fault, and (3) a 480-km-long, east-west profile deployed for the NPE. This profile extended from Beatty, Nevada, west across the Sierra Nevada along the previously recorded east-west profile and continued nearly to the Pacific Ocean. Up to 675 seismic recorders were deployed for each profile. These data are allowing us to develop refined models of the crustal and upper mantle structure of the southern Sierra Nevada and to evaluate alternative hypotheses for its uplift and for Basin and Range extension. They also provide insight into the propagation of regional phases across complex structures.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- OSTI ID:
- 96007
- Report Number(s):
- CONF-9404100--; ON: DE95011413
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cenozoic evolution of San Joaquin basin, California
Data report for the 1983 seismic-refraction experiment at Yucca Mountain, Beatty and vicinity, southwestern Nevada