The coal availability study in Indiana: Alfordsville 7.5 minute quadrangle (1994)

Item Number: OFS94-08
Map Scale: 1:57,143
Price $7.00
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Authors: Haluk Cetin
Carol Conolly
John Rupp

ABSTRACT: The availability of coal resources in the Alfordsville 7.5 Minute Quadrangle in southwest Indiana was examined in this study. Total original, remaining, and available resources were calculated for seven coal beds underlying the study area. In ascending stratigraphic order, the seven coal beds which belong to the Raccoon Creek Group of the Pennsylvanian System are: Blue Creek and Mariah Hill Coal Members, and unnamed Mansfield coal bed of the Mansfield Formation; Lower Block, Upper Block and Buffaloville Coal Members of the Brazil Formation; and unnamed Staunton coal beds of the Staunton Formation. Resources were calculated by combining two coal thickness categories, "14-28 inches" and "greater than 28 inches" with two overburden categories, "0-200 feet" and "200-1000 feet", and by combining four reliability categories (circles), measured (0-0.25 miles from data point), indicated (0.25-0.75 miles) and hypothetical (3.0-10.0 miles). Structure maps showed that no coals were covered by greater than 1000 feet overburden. The seven coal beds contained 204 million short tons, 19.8 million short tons have been removed by mining or lost in the mining process, thus leaving remaining resources of 184 million short tons. Because of land-use and technological restrictions, 162 million short tons (79.3% of the original resources or 87% of the remaining resources) are available for mining in the area.



Cetin, H., Conolly, C. L., Rupp, J. A. 1994,  The coal availability study in Indiana: Alfordsville 7.5 minute quadrangle: Indiana Geological Survey Open-File Study 94-08, 70 p., 39 fig.

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.

Final Report to the United States Geological Survey.


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Keywords: coal, energy resources, Raccoon Creek Group, Mansfield Formation, Brazil Formation

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