Fraser, G. S., Furer, L. C., Like, K. K., Eaton, N. K., Haulter, A. 1999, Systems mapping of bedrock, nonlithified, and man-made deposits in the Oakland City and Augusta quadrangles, Indiana: Indiana Geological Survey Open-File Study 99-06, 9 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, soil, topography, mine, surface, structure, coal, subcrop, Springfield Coal Member, Petersburg Formation, Colchester Coal Member, Linton Formation, Carbondale Group

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Updated 8/19/2020