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The AAPG/Datapages Combined Publications Database
Oklahoma City Geological Society
Abstract
The Southern Terminus of the Nemaha Tectonic Zone, Garvin County, Oklahoma
Abstract
The Nemaha Tectonic Zone is a 400-mile long, intra-cratonic deformation comprised of crustal faulting and uplift, which has been active since Cambrian time. A regional seismic interpretation has extended this zone southward to the Washita Valley Fault in southern Garvin County Oklahoma. The Springer onlap is offset by the Nemaha Fault providing evidence of right-lateral movement of ten miles during mid-Pennsylvanian time. The southern end of the Nemaha system is therefore interpreted to be an antithetic right-lateral fault in an overall left-lateral wrenching system caused by the Ouachita collision.
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