Geophysical investigations of buried volcanic centers near Yucca Mountain, Southwest Nevada
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Abstract
Several aeromagnetic dipolar anomalies occur over flat, alluvial areas near Yucca Mountain that resemble anomalies typically associated with subaerial basaltic volcanic centers. Detailed gravity and ground magnetic data were collected along a surveyed traverse across an aeromagnetic anomaly in Amargosa Valley, south of Yucca Mountain, Nevada. Modeling of the ground magnetic data collected over the largest of these anomalies, the Lathrop Wells aeromagnetic anomaly, indicates that the top of the causative body, most likely basalt, is less than 250 m below the surface. Gravity data indicate an apparent lack of an associated gravity anomaly and suggest that either the causative body may be tuff rather than basalt, or the volume of the body is small. Both drilling and collection of more magnetic and gravity data are necessary because ages and volumes of buried volcanic centers are important constraints for estimating the probability of potential volcanism near the proposed nuclear waste repository at Yucca Mountain.
Suggested Citation
Langenheim, V., Kirchoff-Stein, K.S., Oliver, H.W., 1993, Geophysical investigations of buried volcanic centers near Yucca Mountain, Southwest Nevada, in High Level Radioactive Waste Management, Las Vegas, NV, USA, 26 April 1993 through 30 April 1993, p. 1840-1846.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Geophysical investigations of buried volcanic centers near Yucca Mountain, Southwest Nevada |
| ISBN | 0872629503 |
| Year Published | 1993 |
| Language | English |
| Publisher | Publ by ASCE |
| Publisher location | New York, NY, United States |
| Larger Work Title | High Level Radioactive Waste Management |
| First page | 1840 |
| Last page | 1846 |
| Conference Title | Proceedings of the 4th Annual International Conference on High Level Radioactive Waste Management |
| Conference Location | Las Vegas, NV, USA |
| Conference Date | 26 April 1993 through 30 April 1993 |