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Research Article| May 16, 2017 Influence of textural parameters on detrital-zircon age spectra with application to provenance and paleogeography during the Ediacaran–Terreneuvian of southwestern Laurentia Jason G. Muhlbauer; Jason G. Muhlbauer † 1Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA †jmuhlbau@utk.edu Search for other works by this author on: GSW Google Scholar Christopher M. Fedo; Christopher M. Fedo 1Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Search for other works by this author on: GSW Google Scholar G. Lang Farmer G. Lang Farmer 2Department of Geological Sciences and Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado–Boulder, UCB 399, Boulder, Colorado 80309-0399, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Jason G. Muhlbauer † 1Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA Christopher M. Fedo 1Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee 37996-1410, USA G. Lang Farmer 2Department of Geological Sciences and Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado–Boulder, UCB 399, Boulder, Colorado 80309-0399, USA †jmuhlbau@utk.edu Publisher: Geological Society of America Received: 06 Jul 2016 Revision Received: 06 Feb 2017 Accepted: 11 Apr 2017 First Online: 23 Jun 2017 Online Issn: 1943-2674 Print Issn: 0016-7606 © 2017 Geological Society of America GSA Bulletin (2017) 129 (11-12): 1585–1601. https://doi.org/10.1130/B31611.1 Article history Received: 06 Jul 2016 Revision Received: 06 Feb 2017 Accepted: 11 Apr 2017 First Online: 23 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jason G. Muhlbauer, Christopher M. Fedo, G. Lang Farmer; Influence of textural parameters on detrital-zircon age spectra with application to provenance and paleogeography during the Ediacaran–Terreneuvian of southwestern Laurentia. GSA Bulletin 2017;; 129 (11-12): 1585–1601. doi: https://doi.org/10.1130/B31611.1 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 Multiple sedimentary structures of different scales and representative of various flow conditions were sampled from single, sand-dominated, fluvial channels in the Neoproterozoic (Ediacaran) upper member of the Stirling Quartzite and the Cambrian (Terreneuvian) middle member of the Wood Canyon Formation. Sampling was designed to determine if sorting of detrital-zircon populations by their textural properties affects detrital-zircon age spectra in fluvial sandstones. Grain sizes of the sampled host sandstones range from fine to coarse sand, and sorting ranges from moderately well to poorly sorted. Four Wood Canyon Formation samples contain detrital-zircon grains of similar size, whereas detrital zircons in samples of the Stirling Quartzite differ greatly in size between two samples. Paired Kolmogorov-Smirnov, overlap, and likeness statistical tests demonstrate that all samples from each channel are similar. Comparing size, sphericity, and roundness of detrital-zircon grains to their ages yielded no linear correlation. Sorting of sediments by their textural properties did not affect detrital-zircon age spectra in either unit. In this study, different sedimentary structures within a single fluvial channel do not control the age distribution of detrital zircons. Furthermore, the two braidplain systems (Wood Canyon Formation, Stirling Quartzite) have substantially different detrital-zircon age spectra, indicating that the fluvial environment in general is not responsible for selecting specific age populations. The dominant ca. 1.1 Ga Grenvillian peak in the middle member Wood Canyon Formation results from provenance, not sampling bias. Uplift and erosion of Grenvillian rocks along the Ouachita rift flank during the earliest Cambrian may have generated a pulse of sediment that entered a northwestward-flowing braidplain. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.