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Paleomagnetic constraints on the kinematic relationship between the Guerrero terrane (Mexico) and North America since Early Cretaceous time

2018; Geological Society of America; Volume: 130; Issue: 7-8 Linguagem: Inglês

10.1130/b31916.1

1943-2674

Lydian M. Boschman, Roberto S. Molina Garza, Cor G. Langereis, Douwe J.J. van Hinsbergen,

Geological and Tectonic Studies in Latin America

Research Article| January 04, 2018 Paleomagnetic constraints on the kinematic relationship between the Guerrero terrane (Mexico) and North America since Early Cretaceous time Lydian M. Boschman; Lydian M. Boschman † 1Department of Earth Sciences, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, Netherlands †l.m.boschman@uu.nl, rmolina@geociencias.unam.mx, c.g.langereis@uu.nl, d.j.j.vanhinsbergen@uu.nl. Search for other works by this author on: GSW Google Scholar Roberto S. Molina Garza; Roberto S. Molina Garza † 2Centro de Geociencias, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Juriquilla, Querétaro 76230, Mexico †l.m.boschman@uu.nl, rmolina@geociencias.unam.mx, c.g.langereis@uu.nl, d.j.j.vanhinsbergen@uu.nl. Search for other works by this author on: GSW Google Scholar Cor G. Langereis; Cor G. Langereis † 1Department of Earth Sciences, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, Netherlands †l.m.boschman@uu.nl, rmolina@geociencias.unam.mx, c.g.langereis@uu.nl, d.j.j.vanhinsbergen@uu.nl. Search for other works by this author on: GSW Google Scholar Douwe J.J. van Hinsbergen Douwe J.J. van Hinsbergen † 1Department of Earth Sciences, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, Netherlands †l.m.boschman@uu.nl, rmolina@geociencias.unam.mx, c.g.langereis@uu.nl, d.j.j.vanhinsbergen@uu.nl. Search for other works by this author on: GSW Google Scholar Author and Article Information Lydian M. Boschman † 1Department of Earth Sciences, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, Netherlands Roberto S. Molina Garza † 2Centro de Geociencias, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Juriquilla, Querétaro 76230, Mexico Cor G. Langereis † 1Department of Earth Sciences, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, Netherlands Douwe J.J. van Hinsbergen † 1Department of Earth Sciences, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, Netherlands †l.m.boschman@uu.nl, rmolina@geociencias.unam.mx, c.g.langereis@uu.nl, d.j.j.vanhinsbergen@uu.nl. Publisher: Geological Society of America Received: 28 Aug 2017 Revision Received: 17 Nov 2017 Accepted: 05 Dec 2017 First Online: 04 Jan 2018 Online Issn: 1943-2674 Print Issn: 0016-7606 © 2018 Geological Society of America GSA Bulletin (2018) 130 (7-8): 1131–1142. https://doi.org/10.1130/B31916.1 Article history Received: 28 Aug 2017 Revision Received: 17 Nov 2017 Accepted: 05 Dec 2017 First Online: 04 Jan 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Lydian M. Boschman, Roberto S. Molina Garza, Cor G. Langereis, Douwe J.J. van Hinsbergen; Paleomagnetic constraints on the kinematic relationship between the Guerrero terrane (Mexico) and North America since Early Cretaceous time. GSA Bulletin 2018;; 130 (7-8): 1131–1142. doi: https://doi.org/10.1130/B31916.1 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 SocietyGSA Bulletin Search Advanced Search Abstract The North American Cordillera has been shaped by a long history of accretion of arcs and other buoyant crustal fragments to the western margin of the North American plate since early Mesozoic time. The southernmost accreted terrane is the Guerrero terrane of southwestern Mexico, a latest Jurassic–Cretaceous volcanic arc built on a Triassic accretionary prism. Interpretations of the origin of the Guerrero terrane vary: Some authors consider it a far-traveled, exotic intra-oceanic island arc, while others view it as the (par)autochthonous, extended North American continental margin. We present new paleomagnetic and U-Pb zircon data from Lower Cretaceous sedimentary rocks of the Guerrero terrane. These data show that the Guerrero terrane has a latitudinal plate-motion history equal to that of the North America plate, both before and after accretion. This confirms paleogeographic models in which the Guerrero arc successions formed on North American crust that rifted away from the Mexican mainland by approximately east-west opening of a back-arc basin above an eastward-dipping subduction zone. Additionally, it renders alternative paleogeographical models in which the Guerrero terrane is considered to be exotic to the North American continent unlikely. The phase of back-arc spreading resulted in the short-lived existence of an additional "Guerrero" tectonic plate between the North American and Farallon plates and, upon closure of the back-arc basin, the growth of the North American continent. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.