New 1:100,000-scale mapping of the Indianapolis 30 x 60 minute quadrangle

Status Start Date End Date Locations
completed Jan 1, 1950 Apr 30, 2001 Boone, Hamilton, Hendricks, Johnson, Marion, Montgomery, Morgan, Putnam
Director: Walter Hasenmueller
Other Researchers: Walter A. Hasenmueller and Christina James
Funding: U.S. Geological Survey (USGS) - STATEMAP Program
Issue: Central Indiana (Indiana heartland) is experiencing an extremely high rate of growth. Planners need accurate bedrock geologic maps to assess local mineral resource deposits that can be used to sustain growth at the lowest possible cost and to identify bedrock aquifers that the increased population is likely to use as a source of ground water.
Objective: We will create and publish 1:100,000-scale maps of the project area depicting the bedrock topography and bedrock geology. Developing digital interpretations of the bedrock surface and the distribution of bedrock units anticipate the demand for computer-generated assessments of resource distribution, quantity, and quality. A relational database will be made available that can be used to rapidly locate geologic data requested by government and industry planners and citizens.
Approach: Geologic data from diverse sources are being integrated into a relational database for the project area along with geologic interpretations of those data. Previously tested computer-mapping techniques will be used to construct digital interpretations of the bedrock surface and surfaces bounding mappable geologic units in the project area. The bedrock geologic map will be constructed by computing and plotting appropriate intersections between the computer-modeled geologic boundary surfaces.
Products: The project database containing the compilation of existing geologic data and new data from water well logging and field work used to develop interpretations of bedrock geology will be made available to the public, a 1:100,000-scale computer-generated geologic map, and geologic cross sections.
Benefits: Accurate geologic maps provide the best possible background for understanding site-specific and regional problems in central Indiana, and can be used for planning exploration and regulatory strategies.
Publications:

Reconnaissance bedrock geologic map of the Indianapolis 30 X 60 minute quadrangle, central Indiana
Hasenmueller, W.A., 2001, Reconnaissance bedrock geologic map of the Indianapolis 30 X 60 minute quadrangle, central Indiana: Indiana Geological Survey Open-File Study 01-34.

Reconnaissance map showing elevation of the bedrock surface in the Indianapolis 30 X 60 minute quadrangle, central Indiana
Hasenmueller, W.A., James, C.L., 2001, Reconnaissance map showing elevation of the bedrock surface in the Indianapolis 30 X 60 minute quadrangle, central Indiana: Indiana Geological Survey Open-File Study 01-32.

Reconnaissance map showing thickness of unconsolidated deposits in the Indianapolis 30 X 60 minute quadrangle, central Indiana
Hasenmueller, W.A., James, C.L., 2001, Reconnaissance map showing thickness of unconsolidated deposits in the Indianapolis 30 X 60 minute quadrangle, central Indiana: Indiana Geological Survey Open-File Study 01-33.