Item Number: OFS12-02
Map Scale: 1:0

This report describes the development of a three-dimensional geologic framework model for a 500 square kilometer (190 square mile) region encompassing the Huntertown Aquifer System in northern Allen County, Indiana. The model presents a geologically realistic depiction of sediments distributed as morphosequences of facies deposited in subglacial and in proglacial settings. A primary objective of this work was to develop an explicit 3-D geologic framework model that could also serve as a hydrostratigraphic framework for future hydrogeologic applications. Additional supporting data files (three-dimensional solid model, geodatabase of model layers, and other maps and borehole data) are available for this open-file study.

Letsinger, S. L., 2012, Three-dimensional geologic framework model of the glacial interlobate region of northern Allen County, Indiana: Indiana Geological Survey Open-File Study 12-02, 45 p.

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Keywords: geologic framework model, three-dimensional, GIS, glacial geology, geodatabase, Allen County, aquifers

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