Title: Combined single-grain (U-Th)/He and U/Pb dating of detrital zircons from the Navajo Sandstone, Utah
Abstract: Research Article| September 01, 2003 Combined single-grain (U-Th)/He and U/Pb dating of detrital zircons from the Navajo Sandstone, Utah Jeffrey M. Rahl; Jeffrey M. Rahl 1Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06511, USA Search for other works by this author on: GSW Google Scholar Peter W. Reiners; Peter W. Reiners 1Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06511, USA Search for other works by this author on: GSW Google Scholar Ian H. Campbell; Ian H. Campbell 2Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia Search for other works by this author on: GSW Google Scholar Stefan Nicolescu; Stefan Nicolescu 3Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06511, USA Search for other works by this author on: GSW Google Scholar Charlotte M. Allen Charlotte M. Allen 4Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia Search for other works by this author on: GSW Google Scholar Geology (2003) 31 (9): 761–764. https://doi.org/10.1130/G19653.1 Article history received: 05 Mar 2003 rev-recd: 19 May 2003 accepted: 21 May 2003 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Jeffrey M. Rahl, Peter W. Reiners, Ian H. Campbell, Stefan Nicolescu, Charlotte M. Allen; Combined single-grain (U-Th)/He and U/Pb dating of detrital zircons from the Navajo Sandstone, Utah. Geology 2003;; 31 (9): 761–764. doi: https://doi.org/10.1130/G19653.1 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 Radioisotopic dating of detrital minerals in sedimentary rocks can constrain sediment sources (provenance), elucidate episodes and rates of ancient orogenesis, and give information on paleogeography and sediment-dispersal patterns. Previous approaches have been restricted to the application of a single technique, such as U/Pb or fission-track dating, to detrital grains. These methods provide crystallization and cooling ages, respectively, of sediment sources (terranes). However, evidence for source regions from a single technique can be ambiguous because candidate source terranes often have similar ages for a given radioisotopic system. This ambiguity can be avoided by applying multiple radioisotopic systems to individual detrital grains. Here we present a method for measuring both (U-Th)/He and U/Pb ages of single crystals of detrital zircon, providing both formation and cooling ages (through ∼180 °C). We applied this technique to zircons from the Lower Jurassic Navajo Sandstone, which represents one of the largest erg deposits in the geologic record. A large fraction of these zircons was derived from crust that formed between 1200 and 950 Ma, but cooled below ∼180 °C ca. 500–250 Ma. This history is characteristic of Grenvillian-age crust involved in Appalachian orogenesis (and subsequent rifting) in eastern North America. Our finding requires the existence of a transcontinental sediment-dispersal system capable of moving a large volume of detritus westward (modern coordinates) throughout the late Paleozoic and early Mesozoic. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 182
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