Tectonic loading and subsidence of intermontane basins: Wyoming foreland province ( USA).

E. S. Hagen, M. W. Shuster, K. P. Furlong

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Abstract

Results of 2-D flexural modeling of the N Bighorn and N Green River basins in the Wyoming foreland province suggest that these basins formed as flexures in response to loading by basin-margin uplifts and basin sedimentary sequences. The N Bighorn Basin subsided due to loading by the Beartooth uplift along its W margin. The N Green River Basin developed as a result of concurrent loading by the Wyoming thrust belt to the W and the Wind River uplift to the E. Tectonic loading from basement-involved uplifts played a major role in subsidence and sedimentation, as evidenced by isopach patterns within each basin. Lithospheric flexural rigidities of 10 21 -10 22 newton metres (N.m) can adequately explain subsidence in both basins.-Authors

Original languageEnglish (US)
Pages (from-to)585-588
Number of pages4
JournalGeology
Volume13
Issue number8
DOIs
StatePublished - Jan 1 1985

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All Science Journal Classification (ASJC) codes

  • Geology

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