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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 67 (1983)

Issue: 9. (September)

First Page: 1459

Last Page: 1459

Title: Structural History of Southern Illinois and Upper Mississippi Embayment: ABSTRACT

Author(s): Howard R. Schwalb

Article Type: Meeting abstract


Early crustal failure produced deep grabens which filled with fluvial and marine sediments. Subsequent growth faulting during the Paleozoic deepened these troughs, allowing deposition of thick sedimentary sequences in the Reelfoot basin and Rough Creek graben. Uplift of the Pascola arch closed the Illinois basin to the south, and erosion along the arch removed much of the sedimentary record.

Subsidence of the Mississippi embayment area allowed deposition of southward thickening continental and marine sediments. Subsequent erosion has produced the present-day areal distribution of geologic units.

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Copyright 1997 American Association of Petroleum Geologists