Walter Hasenmueller
Geological Research at the IGS

Mapping bedrock geology, Wabash area

Status Start Date End Date Locations
completed May 1, 2003 Apr 30, 2004 Blackford, Grant, Howard, Huntington, Miami, Wabash, Wells
Director: Walter Hasenmueller
Other Researchers:
Issue: Natural resource needs and population-related impacts require geologic maps and map products in urban areas and along transportation corridors. Specific issues in Indiana that the bedrock geologic mapping addresses are: 1) Distribution and availability of carbonate bedrock for construction aggregate and dimension limestone; 2) Geologic hazards and resource availability related to new highway construction. Because the rural fringes of urban centers in northeastern Indiana contain resources needed for future development, exploration beyond immediate growth centers and along major transportation corridors, such as I-69 and US 24, is essential. The Wabash valley corridor includes the Hoosier Heartland Highway, one of 29 federally recognized high-priority corridors in the National Highway System Designation Act of 1995.
Objective: Continue computer-aided geologic mapping from central Indiana into the Wabash Valley. Trace bedrock mapping units northward into classic exposures of Silurian facies. Create a database of geologic information as a basis for geologic mapping and as a resource for future exploration and exploitation of construction aggregate.
Approach: Geologic data from diverse sources are integrated into a relational database for the project area along with geologic interpretations of those data. Previously tested computer-mapping techniques are used to construct digital interpretations of the bedrock surface and surfaces bounding mappable geologic units in the project area. The final bedrock geologic map is constructed by computing and plotting appropriate intersections between the computer-modeled geologic boundary surfaces.
Products: A 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 bedrock topography map.
Benefits: Geologic mapping provides the best possible background for understanding site-specific and regional problems, for planning exploration and regulatory strategies.
Publications:

Bedrock geologic map of the southwestern portion of the Wabash 30 X 60 minute quadrangle, Indiana
Hasenmueller, W.A., 2004, Bedrock geologic map of the southwestern portion of the Wabash 30 X 60 minute quadrangle, Indiana: Indiana Geological Survey Open-File Study 04-08.

Map showing elevation of the bedrock surface in southwestern portion of the Wabash 30 x 60 minute quadrangle, Indiana
Hasenmueller, W.A., James, C.L., 2004, Map showing elevation of the bedrock surface in southwestern portion of the Wabash 30 x 60 minute quadrangle, Indiana: Indiana Geological Survey Open-File Study 04-09.

Generating Your PDF

Your session for the Indiana Geological and Water Survey will expire in 30 minutes. Please refresh your broswer or click here to restart your session timer.