Structure of Crater Flat and Yucca Mountain, Southeastern Nevada, as inferred from gravity data
By: H. W. Oliver and K.F. Fox
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Abstract
Existing gravity data in the vicinity of Yucca Mountain and Crater Flat have been examined to determine if these data support only the caldera model or if they support other geologic models such as for a high-angle graben or detachment fault. The west to east isostatic gravity profile reduced for a density of 2.0 g/cm3 shows a gravity low of about 20 mGal centered only 2 km from the eastern edge of Crater Flat relative to a gravity high over the eastern boundary of Yucca Mountain. In the western part of Crater Flat, isostatic anomalies rise about 50 mGal across the flat, reaching a maximum gradient of 9 mGal/km about 3 km east of the Bare Mountain range-front fault. Computer modeling of these data indicate that a model that consists of a detachment fault that dips to the west at 12?? under Yucca Mountain and intersects a 27?? east-dipping Bare Mountain fault fits the observed gravity data generally as well as the caldera model.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Structure of Crater Flat and Yucca Mountain, Southeastern Nevada, as inferred from gravity data |
| 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 | 1812 |
| Last page | 1817 |
| 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 |
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