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Character of the Alleghanian orogeny in the southern Appalachians: Part III. Regional tectonic relations

1986; Geological Society of America; Volume: 97; Issue: 11 Linguagem: Inglês

10.1130/0016-7606(1986)97 2.0.co;2

1943-2674

Donald T. Secor, Arthur W. Snoke, R. D. Dallmeyer,

Geochemistry and Geologic Mapping

Research Article| November 01, 1986 Character of the Alleghanian orogeny in the southern Appalachians: Part III. Regional tectonic relations DONALD T. SECOR, JR; DONALD T. SECOR, JR 1Department of Geology, University of South Carolina, Columbia, South Carolina 29208 Search for other works by this author on: GSW Google Scholar ARTHUR W. SNOKE; ARTHUR W. SNOKE 2Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071 Search for other works by this author on: GSW Google Scholar R. DAVID DALLMEYER R. DAVID DALLMEYER 3Department of Geology, University of Georgia, Athens, Georgia 30601 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1986) 97 (11): 1345–1353. https://doi.org/10.1130/0016-7606(1986)97 2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation DONALD T. SECOR, ARTHUR W. SNOKE, R. DAVID DALLMEYER; Character of the Alleghanian orogeny in the southern Appalachians: Part III. Regional tectonic relations. GSA Bulletin 1986;; 97 (11): 1345–1353. doi: https://doi.org/10.1130/0016-7606(1986)97 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Geological and geochronological studies in the eastern Piedmont of the southern Appalachians have documented a polyphase late Paleozoic deformational chronology (D2–D4) that is contemporaneous with the Alleghanian orogeny recorded in the western Appalachian foreland. The scale and vergence of D3 anticlinoria in the eastern Piedmont are similar to those of anticlinoria in the western Appalachians which are related to ramping of underlying thrust surfaces. We suggest that the Appalachian décollement extends southeastward beneath the entire Piedmont Province and that all of the Piedmont rocks were displaced at least 175 km northwestward relative to North America during the Alleghanian orogeny. Late Paleozoic deformational effects in the eastern Piedmont thus are considered cogenetic with Alleghanian foreland deformation. We interpret the Alleghanian orogeny to be the result of oblique, dextral convergence and collision of Gondwana and Laurentia. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.