Oldest direct evidence of lunar-solar tidal forcing encoded in sedimentary rhythmites, Proterozoic Big Cottonwood Formation, central Utah

Abstract

Research Article| September 01, 1994 Oldest direct evidence of lunar-solar tidal forcing encoded in sedimentary rhythmites, Proterozoic Big Cottonwood Formation, central Utah Marjorie A. Chan; Marjorie A. Chan 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar Erik P. Kvale; Erik P. Kvale 2Indiana Geological Survey, Indiana University, Bloomington, Indiana 47405 Search for other works by this author on: GSW Google Scholar Allen W. Archer; Allen W. Archer 3Department of Geology, Kansas State University, Manhattan, Kansas 66506 Search for other works by this author on: GSW Google Scholar Charles P. Sonett Charles P. Sonett 4Department of Planetary Sciences, Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721 Search for other works by this author on: GSW Google Scholar Author and Article Information Marjorie A. Chan 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Erik P. Kvale 2Indiana Geological Survey, Indiana University, Bloomington, Indiana 47405 Allen W. Archer 3Department of Geology, Kansas State University, Manhattan, Kansas 66506 Charles P. Sonett 4Department of Planetary Sciences, Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (9): 791–794. https://doi.org/10.1130/0091-7613(1994)022<0791:ODEOLS>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Marjorie A. Chan, Erik P. Kvale, Allen W. Archer, Charles P. Sonett; Oldest direct evidence of lunar-solar tidal forcing encoded in sedimentary rhythmites, Proterozoic Big Cottonwood Formation, central Utah. Geology 1994;; 22 (9): 791–794. doi: https://doi.org/10.1130/0091-7613(1994)022<0791:ODEOLS>2.3.CO;2 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 oldest known tidal rhythmites, identified in the Big Cottonwood Formation, Utah, are Late to Middle Proterozoic in age (800 Ma to 1.0 Ga), ∼250 to 400 m.y. older than the previously oldest known tidal rhythmites. Four tidally forced cycles and one nontidal (seasonal) cycle control lamina thickness patterns. All of these cycles are recognized in outcrop and core and include cycles associated with daily, semimonthly (synodic), monthly (anomalistic), semiyearly, and yearly (seasonal) events. These features form the oldest geological record of lunar-solar tidal forcing and show that the middle to late Precambrian lunar- and solar-generated tides behaved in a manner very similar to that of today. The analysis also suggests that the Big Cottonwood Formation may have undergone a seasonal climate. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.