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| Keywords: Michigan Basin 2.jpg A geological map of the Michigan Basin Source http //nationalatlas gov/articles/geology/features/michiganbasin html Michigan Basin The North American Tapestry of Time and Terrain United States Department of the Interior Text from this web page follows below A giant incomplete bull's-eye is centered on the state of Michigan Radiating outward to Ohio Indiana Illinois Wisconsin and Ontario this annular pattern outlines the Michigan Basin The Basin is a bowl-shaped structure of uncertain origin that contains over 2 5 miles 4 km of inward-dipping Paleozoic strata and a veneer of Jurassic sedimentary rocks This curious basin is located in the less tectonically-active interior of the continent bordered by the Appalachian and Rocky Mountains It subsided rapidly from Cambrian to Silurian time and filled with shallow-water marine sediments some of which contain deposits of petroleum coal and salt PD-USGov Geology of Michigan Maps of Michigan Geological maps of North America Sedimentary basins | ||||
