Sedimentation in a tectonically partitioned, non-marine foreland basin: the Lower Cretaceous Kootenai Formation, southwestern Montana ( USA).

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Abstract

The Lower Cretaceous Kootenai Formation in southwestern Montana was deposited in the nonmarine, Cordilleran foreland basin during a period of intensified uplift in the westward adjacent Sevier fold-thrust belt. Concurrently, the foreland basin was partitioned by uplift of intra-foreland structural elements and incipient plutonism. Kootenai fluvial and fluviolacustrine depositional systems developed and evolved in response to changing basin architecture. The Kootenai thus provides a case study of nonmarine sedimentary responses to tectonic partitioning in a foreland basin. Criteria for recognition of tectonic partitioning of nonmarine foreland basin are described. -from Author

Original languageEnglish (US)
Pages (from-to)911-931
Number of pages21
JournalGeological Society of America Bulletin
Volume97
Issue number8
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Geology

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