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Are subduction zones invading the Atlantic? Evidence from the southwest Iberia margin

2013; Geological Society of America; Volume: 41; Issue: 8 Linguagem: Inglês

10.1130/g34100.1

1943-2682

João C. Duarte, Filipe Rosas, Pedro Terrinha, Wouter P. Schellart, D. Boutelier, Marc‐André Gutscher, A. Ribeiro,

Geological and Geochemical Analysis

Research Article| August 01, 2013 Are subduction zones invading the Atlantic? Evidence from the southwest Iberia margin João C. Duarte; João C. Duarte 1School of Geosciences, Monash University, Melbourne, Victoria 3800, Australia Search for other works by this author on: GSW Google Scholar Filipe M. Rosas; Filipe M. Rosas 2Departamento de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal3Instituto Dom Luiz, Universidade de Lisboa, 1749-016 Lisbon, Portugal Search for other works by this author on: GSW Google Scholar Pedro Terrinha; Pedro Terrinha 2Departamento de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal4Instituto Português do Mar e da Atmosfera, 1749-077 Lisbon, Portugal Search for other works by this author on: GSW Google Scholar Wouter P. Schellart; Wouter P. Schellart 1School of Geosciences, Monash University, Melbourne, Victoria 3800, Australia Search for other works by this author on: GSW Google Scholar David Boutelier; David Boutelier 1School of Geosciences, Monash University, Melbourne, Victoria 3800, Australia Search for other works by this author on: GSW Google Scholar Marc-André Gutscher; Marc-André Gutscher 5University of Brest, CNRS, Laboratoire Domaines Océaniques, UMR6538, IUEM, Plouzané 29280, France Search for other works by this author on: GSW Google Scholar António Ribeiro António Ribeiro 2Departamento de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal6Centro de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal Search for other works by this author on: GSW Google Scholar Author and Article Information João C. Duarte 1School of Geosciences, Monash University, Melbourne, Victoria 3800, Australia Filipe M. Rosas 2Departamento de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal3Instituto Dom Luiz, Universidade de Lisboa, 1749-016 Lisbon, Portugal Pedro Terrinha 2Departamento de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal4Instituto Português do Mar e da Atmosfera, 1749-077 Lisbon, Portugal Wouter P. Schellart 1School of Geosciences, Monash University, Melbourne, Victoria 3800, Australia David Boutelier 1School of Geosciences, Monash University, Melbourne, Victoria 3800, Australia Marc-André Gutscher 5University of Brest, CNRS, Laboratoire Domaines Océaniques, UMR6538, IUEM, Plouzané 29280, France António Ribeiro 2Departamento de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal6Centro de Geologia, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisbon, Portugal Publisher: Geological Society of America Received: 03 Oct 2012 Revision Received: 11 Feb 2013 Accepted: 11 Mar 2013 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (8): 839–842. https://doi.org/10.1130/G34100.1 Article history Received: 03 Oct 2012 Revision Received: 11 Feb 2013 Accepted: 11 Mar 2013 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation João C. Duarte, Filipe M. Rosas, Pedro Terrinha, Wouter P. Schellart, David Boutelier, Marc-André Gutscher, António Ribeiro; Are subduction zones invading the Atlantic? Evidence from the southwest Iberia margin. Geology 2013;; 41 (8): 839–842. doi: https://doi.org/10.1130/G34100.1 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 Subduction initiation at passive margins plays a central role in the plate tectonics theory. However, the process by which a passive margin becomes active is not well understood. In this paper we use the southwest Iberia margin (SIM) in the Atlantic Ocean to study the process of passive margin reactivation. Currently there are two tectonic mechanisms operating in the SIM: migration of the Gibraltar Arc and Africa-Eurasia convergence. Based on a new tectonic map, we propose that a new subduction zone is forming at the SIM as a result of both propagation of compressive stresses from the Gibraltar Arc and stresses related to the large-scale Africa-Eurasia convergence. The Gibraltar Arc and the SIM appear to be connected and have the potential to develop into a new eastern Atlantic subduction system. Our work suggests that the formation of new subduction zones in Atlantic-type oceans may not require the spontaneous foundering of its passive margins. Instead, subduction can be seen as an invasive process that propagates from ocean to ocean. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.