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Neogene extensional collapse in the western Mediterranean (Betic-Rif Alpine orogenic belt): Implications for the genesis of the Gilbraltar Arc and magmatic activity

1989; Geological Society of America; Volume: 17; Issue: 5 Linguagem: Inglês

10.1130/0091-7613(1989)017 2.3.co;2

1943-2682

Miguel Doblas, Roberto Oyarzun,

Archaeological and Geological Studies

Research Article| May 01, 1989 Neogene extensional collapse in the western Mediterranean (Betic-Rif Alpine orogenic belt): Implications for the genesis of the Gilbraltar Arc and magmatic activity Miguel Doblas; Miguel Doblas 1Departamento de Geodinámica Interna, Facultad de Ciencias Geológicas, Universidad Complutense, 28040 Madrid, Spain Search for other works by this author on: GSW Google Scholar Roberto Oyarzun Roberto Oyarzun 2Departamento de Cristalografía y Mineralogia, Facultad de Ciencias Geológicas, Universidad Complutense, 28040 Madrid, Spain Search for other works by this author on: GSW Google Scholar Author and Article Information Miguel Doblas 1Departamento de Geodinámica Interna, Facultad de Ciencias Geológicas, Universidad Complutense, 28040 Madrid, Spain Roberto Oyarzun 2Departamento de Cristalografía y Mineralogia, Facultad de Ciencias Geológicas, Universidad Complutense, 28040 Madrid, Spain Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (5): 430–433. https://doi.org/10.1130/0091-7613(1989)017 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Miguel Doblas, Roberto Oyarzun; Neogene extensional collapse in the western Mediterranean (Betic-Rif Alpine orogenic belt): Implications for the genesis of the Gilbraltar Arc and magmatic activity. Geology 1989;; 17 (5): 430–433. doi: https://doi.org/10.1130/0091-7613(1989)017 2.3.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 SocietyGeology Search Advanced Search Abstract The Betic-Rif orogenic belt crops out in the western Mediterranean and constitutes the westernmost part of the Alpine edifice. The building up of this belt by compressional nappe tectonics occured during a series of Alpine deformational episodes. Subsequent Neogene extension resulted from the collapse of the previous compressional edifice through major extensional detachment systems. This episode was accompanied by cafe-alkaline to shoshonitic and lamproitic volcanism, tectonic denudation of metamorphic core complexes, and emplacement of peridotite bodies as a final consequence of the evolution of detachment systems. Furthermore, we relate the generation of the Gibraltar Arc and the opening of the Alboran Sea to this major extensional event. Finally, two main stages of tectonic denudation of these detachment systems are defined: (1) Nevado Filabride stage, with ex-humation of metamorphic core complexes, and (2) Ronda-Beni Boussera stage, with a more advanced degree of denudation, leading to the exhumation of upper mantle peridotites, which may be tentatively termed mantle core complexes. 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.