Patterns of deposition during the Early Pennsylvanian (Morrowan) in the Illinois Basin

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Date

2000

Journal Title

Journal ISSN

Volume Title

Publisher

Indiana Geological & Water Survey

Abstract

The early Pennsylvanian (Morrowan) transgressions in the Illinois Basin can be documented by mapping the depositional limits of the subdivisions of the Mansfield Formation. Initial Morrowan subsidence and/or sea level rises resulted in northeastward onlap in three separate centers of deposition that are associated with paleovalley systems on the sub-Pennsylvanian landscape. In the central and southern parts of the basin most of the sub-Pennsylvanian topography was buried by late Morrowan time. In middle Pennsylvanian (Atokan) time onlap deposition had extended beyond the present outcrop belt of Pennsylvanian rocks in the Illinois Basin.

Description

Keywords

Pennsylvanian, Deposition, Illinois Basin

Citation

Droste, J. B., Furer, L. C., and Horowitz, A. S., 2000, Patterns of deposition during the Early Pennsylvanian (Morrowan) in the Illinois Basin: Indiana Geological Survey Special Report 62, 16 p., 10 figs. doi: 10.5967/s9zh-m287

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Type

Technical Report