Fraser, G. S., Dintaman, C. , Nance, D. P., Zidek, M., Like, K. K., Kvale, E. , Conolly, C. L. 1998, Geologic maps of the Wheatland and Washington 7.5-minute quadrangles, Indiana: Indiana Geological Survey Open-File Study 98-04, 6 pl.
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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Keywords: statemap, geologic map, cross section, bedrock topography, bedrock geology, structure, Quaternary, Pennsylvanian, coal, Springfield Coal Member, energy resources
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