Geology of Oklahoma

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The geology of Oklahoma is characterized by Carboniferous rocks in the east, Permian rocks in the center and towards the west, and a cover of Tertiary deposits in the pan handle to the west. Cretaceous sediments are found in the south east. There are also some areas with older outcrops dating back to Cambrian, and even one area of Precambrian igneous rocks.


Oklahoma Geological Survey

U.S. Geological Survey

Oklahoma - Digital Geologic Map Database (19 MB).