Gravity Survey and Interpretation of Fort Irwin and Vicinity, Mojave Desert, California
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- Document: Report (3.2 MB pdf)
- Larger Work: This publication is Chapter H of Geology and geophysics applied to groundwater hydrology at Fort Irwin, California
- Additional Report Piece: Supplemental Data (2.6 MB)
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Abstract
In support of a hydrogeologic study of the groundwater resources on Fort Irwin, we have combined new gravity data with preexisting measurements to produce an isostatic residual gravity map, which we then separated into two components reflecting (1) the density distribution in the pre-Cenozoic basement complex and (2) the distribution of low-density Cenozoic volcanic and sedimentary deposits that lie on top of the basement complex. The second component was inverted to estimate the three-dimensional distribution of Cenozoic deposits by using constraints from geology, drillholes, and time-domain electromagnetic soundings. In most of the base, the Cenozoic deposits are no more than 300 m thick, except in the basins with more than 500 m of fill beneath Coyote Lake, Red Pass Lake, west of Nelson Lake, west of Superior Lake, Bicycle Lake, and in the vicinity of Nelson Lake.
Suggested Citation
Jachens, R.C., and Langenheim, V.E., 2014, Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California, chap. H of Buesch, D.C., ed., Geology and geophysics applied to groundwater hydrology at Fort Irwin, California: U.S. Geological Survey Open-File Report 2013–1024, 11 p., https://doi.org/10.3133/ofr20131024H.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California |
| Series title | Open-File Report |
| Series number | 2013-1024 |
| Chapter | H |
| DOI | 10.3133/ofr20131024H |
| Year Published | 2014 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center |
| Description | Report: iv, 11 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Numbered Series |
| Larger Work Title | Geology and geophysics applied to groundwater hydrology at Fort Irwin, California |
| Country | United States |
| State | California |
| County | San Bernardino County |
| City | Fort Irwin |
| Online Only (Y/N) | Y |
| Additional Online Files (Y/N) | Y |
| Google Analytic Metrics | Metrics page |