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Hydrogeology of an ancient arid closed basin: implications for tabular sandstone-hosted uranium deposits

Geology

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Abstract

Hydrogeologic modeling shows that tabular-type uranium deposits in the Grants uranium region of the San Juan basin, New Mexico, formed in zones of ascending and discharging regional ground-water flow. The association of either lacustrine mudstone or actively subsiding structures and uranium deposits can best be explained by the occurrence of lakes at topographic depressions where ground water having different sources and compositions is likely to converge, mix, and discharge. Ascending and discharging flow also explains the association of uranium deposits with underlying evaporites and suggests a brine interface. The simulations contradict previous suggestions that ground water moved downward in the mudflat. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Hydrogeology of an ancient arid closed basin: implications for tabular sandstone-hosted uranium deposits
Series title:
Geology
Volume
18
Issue:
11
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geology
First page:
1099
Last page:
1102