The Mortagne granite pluton (France) emplaced by pull-apart along a shear zone: Structural and gravimetric arguments and regional implication

Abstract

Research Article| December 01, 1987 The Mortagne granite pluton (France) emplaced by pull-apart along a shear zone: Structural and gravimetric arguments and regional implication BRUNO GUINEBERTEAU; BRUNO GUINEBERTEAU 1Université de Nantes, Laboratoire de Tectonophysique, 2 rue de la Houssinière, 44072 Nantes, France Search for other works by this author on: GSW Google Scholar JEAN-LUC BOUCHEZ; JEAN-LUC BOUCHEZ 2Université Paul Sabatier, Laboratoire de Pétrophysique et Tectonique, 38 rue des Trente-Six Ponts, 31400 Toulouse, France Search for other works by this author on: GSW Google Scholar JEAN-LOUIS VIGNERESSE JEAN-LOUIS VIGNERESSE 1Université de Nantes, Laboratoire de Tectonophysique, 2 rue de la Houssinière, 44072 Nantes, France Search for other works by this author on: GSW Google Scholar Author and Article Information BRUNO GUINEBERTEAU 1Université de Nantes, Laboratoire de Tectonophysique, 2 rue de la Houssinière, 44072 Nantes, France JEAN-LUC BOUCHEZ 2Université Paul Sabatier, Laboratoire de Pétrophysique et Tectonique, 38 rue des Trente-Six Ponts, 31400 Toulouse, France JEAN-LOUIS VIGNERESSE 1Université de Nantes, Laboratoire de Tectonophysique, 2 rue de la Houssinière, 44072 Nantes, France Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1987) 99 (6): 763–770. https://doi.org/10.1130/0016-7606(1987)99<763:TMGPFE>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 Email Permissions Search Site Citation BRUNO GUINEBERTEAU, JEAN-LUC BOUCHEZ, JEAN-LOUIS VIGNERESSE; The Mortagne granite pluton (France) emplaced by pull-apart along a shear zone: Structural and gravimetric arguments and regional implication. GSA Bulletin 1987;; 99 (6): 763–770. doi: https://doi.org/10.1130/0016-7606(1987)99<763:TMGPFE>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 The emplacement mechanism and kinematics and the 3-D geometry of the Variscan granite pluton of Mortagne are interpreted, using systematic measurements of the granite structure allied with micro-structural observations, from a detailed gravimetric study. It is proposed that magma infilled a pull-apart structure which formed along a jog of a northwest-southeast–trending sinistral zone of shear. A second episode of shearing, under a dextral regime and independent of emplacement, was responsible for perigranitic tectonites. These successive transcurrent opposite movements, already documented for Variscan times in western France, are discussed concerning the age of the Mortagne pluton (313 ± 15 m.y.). 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.