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The AAPG/Datapages Combined Publications Database
Tulsa Geological Society
Abstract
Southern Mid-Continent Responses to Acadian Orogeny
Abstract
The Acadian orogeny was an intense episode folding, thrust faulting and intrusion that culminated in the formation of a mountain chain extending along the continental margin from Newfoundland to the latitude of Cape Hatteras. Effects of the orogeny can be recognized in the distribution of sedimentary formations below the Late Devonian unconformity in the Mid-Continent. Large arch-like uplifts are known in Oklahoma and Kansas; smaller domes developed in the deep Anadarko basin. The larger features affected the distribution of hydrocarbons in the Ordovician rocks; the smaller ones became deeply depressed and tightly squeezed. Structures that are small in area contain large quantities of gas under high pressure. They are surrounded by an apron of carbonate and chert detritus mixed with the overlying black Woodford shale which provides a clue to the presence of such structures.
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