Implications for late Grenvillian (Rigolet phase) construction of Rodinia using new U-Pb data from the Mars Hill terrane, Tennessee and North Carolina, United States

Abstract

Research Article| October 01, 2013 Implications for late Grenvillian (Rigolet phase) construction of Rodinia using new U-Pb data from the Mars Hill terrane, Tennessee and North Carolina, United States John N. Aleinikoff; John N. Aleinikoff 1U.S. Geological Survey, MS 963, Denver, Colorado 80225, USA Search for other works by this author on: GSW Google Scholar Scott Southworth; Scott Southworth 2U.S. Geological Survey, MS 926A, National Center, Reston, Virginia 20192, USA Search for other works by this author on: GSW Google Scholar Arthur J. Merschat Arthur J. Merschat 2U.S. Geological Survey, MS 926A, National Center, Reston, Virginia 20192, USA Search for other works by this author on: GSW Google Scholar Author and Article Information John N. Aleinikoff 1U.S. Geological Survey, MS 963, Denver, Colorado 80225, USA Scott Southworth 2U.S. Geological Survey, MS 926A, National Center, Reston, Virginia 20192, USA Arthur J. Merschat 2U.S. Geological Survey, MS 926A, National Center, Reston, Virginia 20192, USA Publisher: Geological Society of America Received: 10 Jan 2013 Revision Received: 28 May 2013 Accepted: 03 Jun 2013 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (10): 1087–1090. https://doi.org/10.1130/G34779.1 Article history Received: 10 Jan 2013 Revision Received: 28 May 2013 Accepted: 03 Jun 2013 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation John N. Aleinikoff, Scott Southworth, Arthur J. Merschat; Implications for late Grenvillian (Rigolet phase) construction of Rodinia using new U-Pb data from the Mars Hill terrane, Tennessee and North Carolina, United States. Geology 2013;; 41 (10): 1087–1090. doi: https://doi.org/10.1130/G34779.1 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 New data for zircon (external morphology, cathodoluminescence zoning, and sensitive high resolution ion microprobe [SHRIMP] U-Pb ages) from the Carvers Gap granulite gneiss of the Mars Hill terrane (Tennessee and North Carolina, United States) require reevaluation of interpretations of the age and origin of this rock. The new results indicate that the zircon is detrital and that the sedimentary protolith of this gneiss (and related Cloudland gneiss) was deposited no earlier than ca. 1.02 Ga and was metamorphosed at ca. 0.98 Ga. Tectonic models that included the gneiss as a piece of 1.8 Ga Amazonian crust (perhaps as part of the hypothetical Columbia supercontinent) are now untenable. The remarkably fast cycle of exhumation, erosion, deposition, and deep burial also is characteristic of other late Grenvillian (post-Ottawan) Mesoproterozoic paragneisses that occur throughout the Appalachians. These rocks provide new evidence for the duration of the formation of the Rodinia supercontinent lasting until at least 0.98 Ma. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.