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Physiographic divisions of Arkansas

Arkansas is divided topographically into two major regions along a northeast-southwest trending “fall line”.  This imaginary line divides resistant sedimentary Paleozoic rocks of the Interior Highlands from unconsolidated sediments of the Gulf Coastal Plain.  Each region is further divided into five physiographic regions of Arkansas.

Linkable Map of the Physiographic Regions of Arkansas
PDF Physiographic Regions PDF
Link to Ozark Plateaus Link to Arkansas River Valley Link to Ouachita Mountains Link to Mississippi River Alluvial Plain Link to West Gulf Coastal Plain
Physiographic Regions of Arkansas Poster

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Arkansas Geological Survey
Vardelle Parham Geology Center
3815 West Roosevelt Road
Little Rock, AR 72204
Phone: 501-296-1877 | Fax: 501-663-7360
Business Hours: Monday - Friday 8:00am - 4:30pm

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