Plate velocity exhumation of ultrahigh-pressure eclogites in the Pakistan Himalaya

Research Article| November 01, 2006 Plate velocity exhumation of ultrahigh-pressure eclogites in the Pakistan Himalaya Randall R. Parrish; Randall R. Parrish 1Department of Geology, University of Leicester, and Natural Environment Research Council Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottinghamshire NG12 5GG, UK Search for other works by this author on: GSW Google Scholar Simon J. Gough; Simon J. Gough 2Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar Michael P. Searle; Michael P. Searle 2Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar David J. Waters David J. Waters 2Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar Author and Article Information Randall R. Parrish 1Department of Geology, University of Leicester, and Natural Environment Research Council Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottinghamshire NG12 5GG, UK Simon J. Gough 2Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Michael P. Searle 2Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK David J. Waters 2Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Publisher: Geological Society of America Received: 21 Mar 2006 Revision Received: 16 Jun 2006 Accepted: 19 Jun 2006 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2006) 34 (11): 989–992. https://doi.org/10.1130/G22796A.1 Article history Received: 21 Mar 2006 Revision Received: 16 Jun 2006 Accepted: 19 Jun 2006 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Randall R. Parrish, Simon J. Gough, Michael P. Searle, David J. Waters; Plate velocity exhumation of ultrahigh-pressure eclogites in the Pakistan Himalaya. Geology 2006;; 34 (11): 989–992. doi: https://doi.org/10.1130/G22796A.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 U-Pb ages of zircon and allanite from the coesite-bearing ultrahigh-pressure (UHP) units in the Kaghan Valley, northern Pakistan, demonstrate that peak UHP metamorphism along the northern margin of the Indian plate occurred at 46.4 ± 0.1 Ma at peak pressure-temperature conditions of >27.5 kbar (>100 km) and 720–770 °C. Much lower pressure retrogressive growth of titanite took place between 46.4 and ca. 44 Ma, indicating that the eclogites were exhumed to 35 km depth at or before 44 Ma, implying very rapid exhumation rates within the mantle of ∼30–80 mm/yr or more, comparable to rapid plate velocities. Once entrained in the base of the crust, the eclogites followed a slower cooling history from 45 Ma, similar to the amphibolite facies gneisses of the Pakistan Himalaya. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.