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Meteoric water circulation in a rolling-hinge detachment system (northern Snake Range core complex, Nevada)

2014; Geological Society of America; Volume: 127; Issue: 1-2 Linguagem: Inglês

10.1130/b31063.1

1943-2674

Aude Gébelin, Christian Teyssier, Matthew T. Heizler, Andreas Mulch,

Groundwater flow and contamination studies

Research Article| January 01, 2015 Meteoric water circulation in a rolling-hinge detachment system (northern Snake Range core complex, Nevada) Aude Gébelin; Aude Gébelin † 1Biodiversity and Climate Research Centre (BiK-F) and Senckenberg, Senckenberganlage 25, 60325 Frankfurt/Main, Germany †E-mail: aude.gebelin@senckenberg.de. Search for other works by this author on: GSW Google Scholar Christian Teyssier; Christian Teyssier 2Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Search for other works by this author on: GSW Google Scholar Matthew T. Heizler; Matthew T. Heizler 3Bureau of Geology and Mineral Resources, Socorro, New Mexico 87801, USA Search for other works by this author on: GSW Google Scholar Andreas Mulch Andreas Mulch 1Biodiversity and Climate Research Centre (BiK-F) and Senckenberg, Senckenberganlage 25, 60325 Frankfurt/Main, Germany4Institut für Geowissenschaften, Goethe Universität Frankfurt, Altenhöferallee 1, 60438 Frankfurt/Main, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information Aude Gébelin † 1Biodiversity and Climate Research Centre (BiK-F) and Senckenberg, Senckenberganlage 25, 60325 Frankfurt/Main, Germany Christian Teyssier 2Earth Sciences, University of Minnesota, Minneapolis, Minnesota 55455, USA Matthew T. Heizler 3Bureau of Geology and Mineral Resources, Socorro, New Mexico 87801, USA Andreas Mulch 1Biodiversity and Climate Research Centre (BiK-F) and Senckenberg, Senckenberganlage 25, 60325 Frankfurt/Main, Germany4Institut für Geowissenschaften, Goethe Universität Frankfurt, Altenhöferallee 1, 60438 Frankfurt/Main, Germany †E-mail: aude.gebelin@senckenberg.de. Publisher: Geological Society of America Received: 09 Jan 2014 Revision Received: 23 May 2014 Accepted: 01 Jul 2014 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2014 Geological Society of America GSA Bulletin (2015) 127 (1-2): 149–161. https://doi.org/10.1130/B31063.1 Article history Received: 09 Jan 2014 Revision Received: 23 May 2014 Accepted: 01 Jul 2014 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Aude Gébelin, Christian Teyssier, Matthew T. Heizler, Andreas Mulch; Meteoric water circulation in a rolling-hinge detachment system (northern Snake Range core complex, Nevada). GSA Bulletin 2015;; 127 (1-2): 149–161. doi: https://doi.org/10.1130/B31063.1 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 Combined petrofabric, microstructural, stable isotopic, and 40Ar/39Ar geochronologic data provide a new perspective on the Cenozoic evolution of the northern Snake Range metamorphic core complex in east-central Nevada. This core complex is bounded by the northern Snake Range detachment, interpreted as a rolling-hinge detachment, and by an underlying shear zone that is dominated by muscovite-bearing quartzite mylonite and interlayered micaschist. In addition to petrofabric, microstructural analysis, and 40Ar/39Ar geochronology, we use hydrogen isotope ratios (δD) in synkinematic white mica to characterize fluid-rock interaction across the rolling-hinge detachment. Results indicate that the western flank of the range preserves mostly Eocene deformation (49–45 Ma), characterized by coaxial quartz fabrics and the dominant presence of metamorphic fluids, although the imprint of meteoric fluids increases structurally downward and culminates in a shear zone with a white mica 40Ar/39Ar plateau age of ca. 27 Ma. In contrast, the eastern flank of the range displays pervasive noncoaxial (top-to-the-east) fabrics defined by white mica that formed in the presence of meteoric fluids and yield Oligocene–Miocene 40Ar/39Ar ages (27–21 Ma). Evolution of the Oligocene–Miocene rolling-hinge detachment controlled where and when faulting was active or became inactive owing to rotation, and therefore where fluids were able to circulate from the surface to the brittle-ductile transition. On the western flank (rotated detachment), faulting became inactive early, while continued active faulting on the eastern flank of the detachment allowed surface fluids to reach the mylonitic quartzite. The combined effects of synkinematic recrystallization and fluid interaction reset argon and hydrogen isotope ratios in white mica until the early Miocene (ca. 21 Ma), when the brittle-ductile transition was exhumed beneath the detachment. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.