Map showing the dip magnitude and direction of the Trenton Limestone in the Indiana Heartland (2002)
ANNOTATION: This map presents an analysis of the structural dip of the approximate top of the Trenton Limestone (Ordovician) in the Lafayette, Indianapolis, western half of the Muncie, and western half of the New Castle 1:100,000-scale quadrangles. The map was derived from IGS OFS02-06. This computer-generated map emphasizes subtle regional patterns in the direction and magnitude of structural dip on the crest of the Kankakee Arch and northeastern flank of the Illinois Basin.
Hasenmueller, W. A., James, C. L. 2002, Map showing the dip magnitude and direction of the Trenton Limestone in the Indiana Heartland: Indiana Geological Survey Open-File Study 02-07
Notes: Publications in the Indiana Geological Survey Open-File series have been inconsistently named using a variety of series titles including "Open-File Report," "Open-File Map," and "Open-File Study." Prior to 1994, a publication in this series was generally referred to as an "Open-File Report" (but not always). To help reduce confusion created by these inconsistencies, the IGS now refers to every publication in the Open-File series as an "Open-File Study." To be entirely correct in writing a bibliographic reference for a publication, one should use the series name and number that appears on the publication itself.
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