Renewed late Miocene (<8 Ma) hinterland ductile thrusting, western Nepal Himalaya

Research Article| April 06, 2018 Renewed late Miocene (<8 Ma) hinterland ductile thrusting, western Nepal Himalaya Zoe Braden; Zoe Braden 1Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, ON K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar Laurent Godin; Laurent Godin 1Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, ON K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar John Cottle; John Cottle 2Department of Earth Science, University of California, Santa Barbara, California 93106, USA Search for other works by this author on: GSW Google Scholar Chris Yakymchuk Chris Yakymchuk 3Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Zoe Braden 1Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, ON K7L 3N6, Canada Laurent Godin 1Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, ON K7L 3N6, Canada John Cottle 2Department of Earth Science, University of California, Santa Barbara, California 93106, USA Chris Yakymchuk 3Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada Publisher: Geological Society of America Received: 25 Jan 2018 Revision Received: 21 Mar 2018 Accepted: 22 Mar 2018 First Online: 06 Apr 2018 Online Issn: 1943-2682 Print Issn: 0091-7613 © 2018 Geological Society of America Geology (2018) 46 (6): 503–506. https://doi.org/10.1130/G40097.1 Article history Received: 25 Jan 2018 Revision Received: 21 Mar 2018 Accepted: 22 Mar 2018 First Online: 06 Apr 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Zoe Braden, Laurent Godin, John Cottle, Chris Yakymchuk; Renewed late Miocene (<8 Ma) hinterland ductile thrusting, western Nepal Himalaya. Geology 2018;; 46 (6): 503–506. doi: https://doi.org/10.1130/G40097.1 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 8 Ma zircon rim ages from a kyanite-bearing leucocratic pod within the lower metamorphic core of the Himalayan orogen in western Nepal. Zircon cores yield ca. 1.84 Ga ages, interpreted to be inherited igneous cores, consistent with the sample's structural position and a Paleoproterozoic source. The pod is boudinaged and hosted in a pervasively top-to-the-south sheared pelitic schist; the 8 Ma zircon rim ages therefore provide a maximum age constraint on recent shear deformation. This late Miocene shearing is inferred to be associated with renewed thrusting in the hinterland of the western Nepal Himalaya, coeval with thrusting and erosion of Lesser Himalayan sequence rocks in the foreland. Hinterland ductile deformation at ≤8 Ma was followed by cooling below 350 °C at 6 Ma. This rapid transition from ductile thrusting to exhumation highlights the need for high-resolution geochronology to resolve deformation episodes in orogenic systems. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.