Walter Hasenmueller
Geological Research at the IGS

Compilation of Monroe County 1:24,000-scale geologic maps

Status Start Date End Date Locations
completed May 1, 2007 Nov 1, 2010 Monroe
Director: Walter Hasenmueller
Other Researchers: Walter A. Hasenmueller, Carolyn Estell, Brian Keith, Todd Thompson
Funding: U.S. Geological Survey (USGS) - STATEMAP Program
Issue: IGS Miscellaneous Map 73, Bedrock Geologic Map of Monroe County, Indiana, was published in 2008. This intermediate-scale (1:48,000) map provides an overview of Monroe County bedrock geology that points out the need for more detailed mapping in and around the city of Bloomington, Indiana where detailed geologic information is needed to guide development and the need for more detailed mapping of the Mt. Carmel Fault, Leesville Anticline, and associated structures in eastern Monroe County.
Objective: The objective of this project is to produce detailed 1:24,000-scale geologic maps of the Monroe County portions of the five 7.5-minute quadrangles that included the city of Bloomington, Indiana, the city’s developing fringe, and the Monroe County portion of the Mt. Carmel Fault and Leesville Anticline.
Approach: Detailed geologic maps of the Bloomington, Clear Creek, Hindustan, Unionville, and Allens Creek quadrangles will be produced by assembling a database of public-domain geologic records that document the spatial distribution of geologic units in and near the study area. This database will be used to construct preliminary three-dimensional (3-D) geologic models that will guide the efficient collection of new field data to refine the database. The completed database will be used to construct the final 3-D geologic model from which the geologic maps will be derived.
Products: Detailed (1:24,000-scale) geologic maps of the Bloomington and Clear Creek quadrangles have been completed (IGS Miscellaneous Maps 75 and 76). Detailed (1:24,000-scale) geologic maps of the Hindustan, Unionville, and Allens Creek quadrangles are nearing completion. These quadrangles will be added to the IGS Miscellaneous Map publication series.
Benefits: Detailed geologic mapping of the carbonate rocks that underlie most of the city of Bloomington, Indiana and cap ridges to the east and south of the city where development is rapid will provide better tools for planners to use in assessing the impact of urban development on potential resources such as crushed-stone and dimension-stone and geologic hazards such as karst. Detailed geologic maps of the Hindustan, Unionville, and Allens Creek quadrangles will provide better scientific understanding of the Mt. Carmel Fault, associated minor faults, and the Leesville Anticline structure.
Publications:



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