Surficial Geology of Willisville Quadrangle, Perry, Randolph, and Jackson Counties, Illinois


One 35" x 30" map sheet which contains map and legends. A 2-page report detailing stratigraphy and bedrock topography accompanies the map.
Nelson, W.J., 2022, Surficial geology of Willisville Quadrangle, Perry, Randolph, and Jackson Counties, Illinois: Illinois State Geological Survey, Illinois Geologic Quadrangle Map, IGQ Willisville-SG, 1 sheet, 1:24,000, report, 2 p.
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