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The rift-to-drift transition in the North Atlantic: A stuttering start of the MORB machine?

2007; Geological Society of America; Volume: 35; Issue: 12 Linguagem: Inglês

10.1130/g23613a.1

1943-2682

Oliver Jagoutz, Othmar Müntener, Giänreto Manatschal, Daniela Rubatto, Gwenn Péron‐Pinvidic, B. D. Turrin, Igor M. Villa,

Geology and Paleoclimatology Research

Research Article| December 01, 2007 The rift-to-drift transition in the North Atlantic: A stuttering start of the MORB machine? Oliver Jagoutz; Oliver Jagoutz 1Institut für Geologie, Universität Bern, CH-3012 Bern, Switzerland Search for other works by this author on: GSW Google Scholar Othmar Müntener; Othmar Müntener 1Institut für Geologie, Universität Bern, CH-3012 Bern, Switzerland Search for other works by this author on: GSW Google Scholar Gianreto Manatschal; Gianreto Manatschal 2Centre géochimie surface-École et observatoire des sciences de la Terre, Université Louis Pasteur, F-67084 Strasbourg, France Search for other works by this author on: GSW Google Scholar Daniela Rubatto; Daniela Rubatto 3Research School of Earth Sciences, Australian National University, Canberra 0200 ACT, Australia Search for other works by this author on: GSW Google Scholar Gwenn Péron-Pinvidic; Gwenn Péron-Pinvidic 4Centre géochimie surface- École et observatoire des sciences de la Terre, Université Louis Pasteur, F-67084 Strasbourg, France Search for other works by this author on: GSW Google Scholar Brent D. Turrin; Brent D. Turrin 5Department of Geological Sciences, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA Search for other works by this author on: GSW Google Scholar Igor M. Villa Igor M. Villa 6Institut für Geologie, Universität Bern, CH-3012 Bern, Switzerland, and Universita di Milano Bicocca, 20126 Milano, Italy Search for other works by this author on: GSW Google Scholar Author and Article Information Oliver Jagoutz 1Institut für Geologie, Universität Bern, CH-3012 Bern, Switzerland Othmar Müntener 1Institut für Geologie, Universität Bern, CH-3012 Bern, Switzerland Gianreto Manatschal 2Centre géochimie surface-École et observatoire des sciences de la Terre, Université Louis Pasteur, F-67084 Strasbourg, France Daniela Rubatto 3Research School of Earth Sciences, Australian National University, Canberra 0200 ACT, Australia Gwenn Péron-Pinvidic 4Centre géochimie surface- École et observatoire des sciences de la Terre, Université Louis Pasteur, F-67084 Strasbourg, France Brent D. Turrin 5Department of Geological Sciences, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA Igor M. Villa 6Institut für Geologie, Universität Bern, CH-3012 Bern, Switzerland, and Universita di Milano Bicocca, 20126 Milano, Italy Publisher: Geological Society of America Received: 18 Dec 2006 Revision Received: 25 Jul 2007 Accepted: 27 Jul 2007 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2007) 35 (12): 1087–1090. https://doi.org/10.1130/G23613A.1 Article history Received: 18 Dec 2006 Revision Received: 25 Jul 2007 Accepted: 27 Jul 2007 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Oliver Jagoutz, Othmar Müntener, Gianreto Manatschal, Daniela Rubatto, Gwenn Péron-Pinvidic, Brent D. Turrin, Igor M. Villa; The rift-to-drift transition in the North Atlantic: A stuttering start of the MORB machine?. Geology 2007;; 35 (12): 1087–1090. doi: https://doi.org/10.1130/G23613A.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 We report U-Pb and 39Ar-40Ar measurements on plutonic rocks recovered from the Ocean Drilling Program (ODP) Legs 173 and 210. Drilling revealed continental crust (Sites 1067 and 1069) and exhumed mantle (Sites 1070 and 1068) along the Iberia margin and exhumed mantle (Site 1277) on the conjugate Newfoundland margin. Our data record a complex igneous and thermal history related to the transition from rifting to seafloor spreading. The results show that the rift-to-drift transition is marked by a stuttering start of MORB-type magmatic activity. Subsequent to initial alkaline magmatism, localized mid-oceanic ridge basalts (MORB) magmatism was again replaced by basin-wide alkaline events, caused by a low degree of decompression melting due to tectonic delocalization of deformation. Such "off-axis" magmatism might be a common process in (ultra-) slow oceanic spreading systems, where "magmatic" and "tectonic" spreading varies in both space and time. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.