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- W2939733642 abstract "Research Article| April 16, 2019 Shock-produced high-pressure (La, Ce, Th)PO4 polymorph revealed by microstructural phase heritage of monazite Timmons M. Erickson; Timmons M. Erickson * 1Jacobs - JETS Contract, NASA Johnson Space Center, Houston, USA, Texas 77058, USA2Space Science and Technology Centre, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box 1984, Perth, Western Australia 6845, Australia3Center for Lunar Science and Exploration, Lunar and Planetary Institute, Universities Space Research Association, 3600 Bay Area Boulevard, Houston, Texas 77058, USA *E-mail: timmons.m.erickson@nasa.gov Search for other works by this author on: GSW Google Scholar Nicholas E. Timms; Nicholas E. Timms 2Space Science and Technology Centre, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box 1984, Perth, Western Australia 6845, Australia Search for other works by this author on: GSW Google Scholar Mark A. Pearce; Mark A. Pearce 4CSIRO Mineral Resources, Australian Resources Research Centre, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia Search for other works by this author on: GSW Google Scholar Cyril Cayron; Cyril Cayron 5Laboratory of ThermoMechanical Metallurgy (LMTM), PX Group Chair, École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, 2000 Neuchâtel, Switzerland Search for other works by this author on: GSW Google Scholar Alex Deutsch; Alex Deutsch 6Institut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, D-48149 Munster, Germany Search for other works by this author on: GSW Google Scholar Lindsay P. Keller; Lindsay P. Keller 7NASA Johnson Space Center, Mailcode XI3, 2101 NASA Parkway, Houston, Texas 77058, USA Search for other works by this author on: GSW Google Scholar David A. Kring David A. Kring 3Center for Lunar Science and Exploration, Lunar and Planetary Institute, Universities Space Research Association, 3600 Bay Area Boulevard, Houston, Texas 77058, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Timmons M. Erickson * 1Jacobs - JETS Contract, NASA Johnson Space Center, Houston, USA, Texas 77058, USA2Space Science and Technology Centre, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box 1984, Perth, Western Australia 6845, Australia3Center for Lunar Science and Exploration, Lunar and Planetary Institute, Universities Space Research Association, 3600 Bay Area Boulevard, Houston, Texas 77058, USA Nicholas E. Timms 2Space Science and Technology Centre, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box 1984, Perth, Western Australia 6845, Australia Mark A. Pearce 4CSIRO Mineral Resources, Australian Resources Research Centre, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia Cyril Cayron 5Laboratory of ThermoMechanical Metallurgy (LMTM), PX Group Chair, École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, 2000 Neuchâtel, Switzerland Alex Deutsch 6Institut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, D-48149 Munster, Germany Lindsay P. Keller 7NASA Johnson Space Center, Mailcode XI3, 2101 NASA Parkway, Houston, Texas 77058, USA David A. Kring 3Center for Lunar Science and Exploration, Lunar and Planetary Institute, Universities Space Research Association, 3600 Bay Area Boulevard, Houston, Texas 77058, USA *E-mail: timmons.m.erickson@nasa.gov Publisher: Geological Society of America Received: 14 Jan 2019 Revision Received: 11 Mar 2019 Accepted: 13 Mar 2019 First Online: 16 Apr 2019 Online Issn: 1943-2682 Print Issn: 0091-7613 © 2019 Geological Society of America Geology (2019) 47 (6): 504–508. https://doi.org/10.1130/G46008.1 Article history Received: 14 Jan 2019 Revision Received: 11 Mar 2019 Accepted: 13 Mar 2019 First Online: 16 Apr 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Timmons M. Erickson, Nicholas E. Timms, Mark A. Pearce, Cyril Cayron, Alex Deutsch, Lindsay P. Keller, David A. Kring; Shock-produced high-pressure (La, Ce, Th)PO4 polymorph revealed by microstructural phase heritage of monazite. Geology 2019;; 47 (6): 504–508. doi: https://doi.org/10.1130/G46008.1 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 The responses of uranium-bearing accessory minerals to shock metamorphism have received growing interest, because under extreme pressure and temperature conditions, these phases can form unique microstructures and/or polymorphs and their radiometric ages can be partially to wholly reset. This study presents new, high-resolution electron backscatter diffraction microstructural analyses of shock-deformed monazite, (La, Ce, Th)PO4, from the Haughton Dome, Nunavut, Canada, and the Nördlinger-Ries Crater, southern Germany. At each locality, shocked monazite grains contain distinctive lamellae comprising interlocking laths in four systematic crystallographic orientations. Modelling of orientation relationships among these lath-textured microstructures reveals that they were produced by reversion from lamellae of a previously undescribed high-pressure polymorph with a tetragonal symmetry. This is the first report of polymorphism found in natural (La, Ce, Th)PO4. The orientation relationships, lamellar forms, and ready reversion to monazite at low pressures are consistent with a deviatoric transformation. The former presence of this new (La, Ce, Th)PO4 polymorph is detected in moderately to highly shocked rocks, suggesting that it may be common at other impact craters. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2939733642 date "2019-04-16" @default.
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- W2939733642 title "Shock-produced high-pressure (La, Ce, Th)PO4 polymorph revealed by microstructural phase heritage of monazite" @default.
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