Portal de Periódicos da CAPES

Origin of the Rheic Ocean: Rifting along a Neoproterozoic suture?

2006; Geological Society of America; Volume: 34; Issue: 5 Linguagem: Inglês

10.1130/g22068.1

1943-2682

J. Brendan Murphy, Gabriel Gutiérrez‐Alonso, R. Damian Nance, Javier Fernández‐Suárez, J. Duncan Keppie, Cecilio Quesada, Rob Strachan, J. Dostal,

Geology and Paleoclimatology Research

Research Article| May 01, 2006 Origin of the Rheic Ocean: Rifting along a Neoproterozoic suture? J. Brendan Murphy; J. Brendan Murphy 1Department of Earth Sciences, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada Search for other works by this author on: GSW Google Scholar Gabriel Gutierrez-Alonso; Gabriel Gutierrez-Alonso 2Departamento de Geología, Universidad de Salamanca, 33708 Salamanca, Spain Search for other works by this author on: GSW Google Scholar R. Damian Nance; R. Damian Nance 3Department of Geological Sciences, Ohio University, Athens, Ohio 45701, USA Search for other works by this author on: GSW Google Scholar Javier Fernandez-Suarez; Javier Fernandez-Suarez 4Departamento de Petrología y Geoquímica, Universidad Complutense, 28040 Madrid, Spain Search for other works by this author on: GSW Google Scholar J. Duncan Keppie; J. Duncan Keppie 5Institute de Geologia, Universidad Nacional Autonoma de Mexico, 04510 Mexico D.F., Mexico Search for other works by this author on: GSW Google Scholar Cecilio Quesada; Cecilio Quesada 6IGME, Dirección de Geología y Geofísica, c/La Calera, 1 28760 Tres Cantos, Madrid, Spain Search for other works by this author on: GSW Google Scholar Rob A. Strachan; Rob A. Strachan 7School of Earth and Environmental Sciences, University of Portsmouth, Portsmouth PO1 3QL, UK Search for other works by this author on: GSW Google Scholar Jarda Dostal Jarda Dostal 8Department of Geology, St. Marys University, Halifax, Nova Scotia B3H 3C3, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information J. Brendan Murphy 1Department of Earth Sciences, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada Gabriel Gutierrez-Alonso 2Departamento de Geología, Universidad de Salamanca, 33708 Salamanca, Spain R. Damian Nance 3Department of Geological Sciences, Ohio University, Athens, Ohio 45701, USA Javier Fernandez-Suarez 4Departamento de Petrología y Geoquímica, Universidad Complutense, 28040 Madrid, Spain J. Duncan Keppie 5Institute de Geologia, Universidad Nacional Autonoma de Mexico, 04510 Mexico D.F., Mexico Cecilio Quesada 6IGME, Dirección de Geología y Geofísica, c/La Calera, 1 28760 Tres Cantos, Madrid, Spain Rob A. Strachan 7School of Earth and Environmental Sciences, University of Portsmouth, Portsmouth PO1 3QL, UK Jarda Dostal 8Department of Geology, St. Marys University, Halifax, Nova Scotia B3H 3C3, Canada Publisher: Geological Society of America Received: 15 Jul 2005 Revision Received: 25 Oct 2005 Accepted: 29 Oct 2005 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2006) 34 (5): 325–328. https://doi.org/10.1130/G22068.1 Article history Received: 15 Jul 2005 Revision Received: 25 Oct 2005 Accepted: 29 Oct 2005 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation J. Brendan Murphy, Gabriel Gutierrez-Alonso, R. Damian Nance, Javier Fernandez-Suarez, J. Duncan Keppie, Cecilio Quesada, Rob A. Strachan, Jarda Dostal; Origin of the Rheic Ocean: Rifting along a Neoproterozoic suture?. Geology 2006;; 34 (5): 325–328. doi: https://doi.org/10.1130/G22068.1 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 SocietyGeology Search Advanced Search Abstract The Rheic Ocean is widely believed to have formed in the Late Cambrian–Early Ordovician as a result of the drift of peri-Gondwanan terranes, such as Avalonia and Carolina, from the northern margin of Gondwana, and to have been consumed in the Devonian Carboniferous by continent-continent collision during the formation of Pangea. Other peri-Gondwanan terranes (e.g., Armorica, Ossa-Morena, northwest Iberia, Saxo-Thuringia, Moldanubia) remained along the Gondwanan margin at the time of Rheic Ocean formation. Differences in the Neoproterozoic histories of these peri-Gondwanan terranes suggest the location of the Rheic Ocean rift may have been inherited from Neoproterozoic lithospheric structures formed by the accretion and dispersal of peri-Gondwanan terranes along the northern Gondwanan margin prior to Rheic Ocean opening.Avalonia and Carolina have Sm-Nd isotopic characteristics indicative of recycling of a juvenile ca. 1 Ga source, and they were accreted to the northern Gondwanan margin prior to voluminous late Neoproterozoic arc magmatism. In contrast, Sm-Nd isotopic characteristics of most other peri-Gondwanan terranes closely match those of Eburnian basement, suggesting they reflect recycling of ancient (2 Ga) West African crust. The basements of terranes initially rifted from Gondwana to form the Rheic Ocean were those that had previously accreted during Neoproterozoic orogenesis, suggesting the rift was located near the suture between the accreted terranes and cratonic northern Gondwana. Opening of the Rheic Ocean coincided with the onset of subduction beneath the Laurentian margin in its predecessor, the Iapetus Ocean, suggesting geodynamic linkages between the destruction of the Iapetus Ocean and the creation of the Rheic Ocean. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.