Illinois State Geological Survey Digital Geologic Map Titled: Surficial Geology of Marine Quadrangle, Madison County, Illinois; in Geologic Map Schema (GeMS) format; Quad: Marine; Author(s): Phillips, A.C., D.A. Grimley
Summary
Illinois State Geological Survey Digital Geologic Map Titled: Surficial Geology of Marine Quadrangle, Madison County, Illinois; in Geologic Map Schema (GeMS) format; Quad: Marine; Author(s): Phillips, A.C., D.A. Grimley