Surficial Geology of Mascoutah Quadrangle, St. Clair County, Illinois

Map (2 sheets) and report describe the surficial geology of the Mascoutah Quadrangle, St. Clair County Illinois. Economic resources and environmental hazards are also discussed. Map supersedes Surficial Geology of Mascoutah Quadrangle (2006), Illinois Preliminary Geologic Map series. scale 1:24,000

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