Low-latitude glaciation in the Neoproterozoic of Oman

Abstract

Research Article| May 01, 2005 Low-latitude glaciation in the Neoproterozoic of Oman Ben Kilner; Ben Kilner 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar ConallMac Niocaill; ConallMac Niocaill 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar Martin Brasier Martin Brasier 1Department 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 Ben Kilner 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK ConallMac Niocaill 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Martin Brasier 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Publisher: Geological Society of America Received: 24 Sep 2004 Revision Received: 19 Jan 2005 Accepted: 19 Jan 2005 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (5): 413–416. https://doi.org/10.1130/G21227.1 Article history Received: 24 Sep 2004 Revision Received: 19 Jan 2005 Accepted: 19 Jan 2005 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Ben Kilner, ConallMac Niocaill, Martin Brasier; Low-latitude glaciation in the Neoproterozoic of Oman. Geology 2005;; 33 (5): 413–416. doi: https://doi.org/10.1130/G21227.1 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 Although Earth is widely believed to have undergone a series of extreme low-latitude snowball glaciations during the Neoproterozoic (ca. 1000–543 Ma), only one reliable paleomagnetic result, from Elatina, South Australia, places glacial rocks close to the equator. We report new paleomagnetic data from the Neoproterozoic Huqf Supergroup of Oman that pass fold and reversal tests and yield a paleopole at 52.3°S, 074.4°E (N = 25 sites; α95 = 7.3°). This paleopole places the Muscat region of Oman at a latitude of 13° in the late Neoproterozoic and provides the first direct evidence that both glacial and overlying cap carbonate units were deposited in the tropics. The presence of glacial-interglacial cyclicity within the Huqf Supergroup indicates that areas close to the equator may have been largely free of ice at the time of deposition, a result that is inconsistent with the classic snowball Earth model. Our result precludes the possibility that contrasting lithologies mark a phase of rapid plate motion and provides the first evidence for low-latitude glaciation in Arabia. A series of magnetic reversals in the Fiq tillite and the overlying Hadash dolomite, in northern and central Oman, correlates well with a similar sequence in the Mirbat Formation in southern Oman and indicates that recovery from glacial conditions took place over long time scales (possibly >105–106 yr). You do not have access to this content, please speak to your institutional administrator if you feel you should have access.