The NSS Bulletin - ISSN 1090-6924
Volume 38 Number 4: 74-79 - October 1976

A publication of the National Speleological Society

The Mitchell Plain of Southern Indiana
Margaret V. Palmer


A topographic study of the Mitchell Plain of southern Indiana offers a framework for understanding the origin of the well-developed karst features located in its western portions. The Mitchell Plain is composed of three landform types and has been modified by at least three base-leveled surfaces, which cut across the different landform types. The landform types are (1) areas of sinkhole plain, (2) areas of unconsolidated surficial cover, and (3) areas of dissected upland. The base-level-controlled surfaces include: (1) the upper Mitchell Plain surface, (2) the lower Mitchell Plain surface, and (3) the Blue River Strath.

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