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Rapid and widespread response of the Lower Mississippi River to eustatic forcing during the last glacial-interglacial cycle

2012; Geological Society of America; Volume: 124; Issue: 5-6 Linguagem: Inglês

10.1130/b30449.1

1943-2674

Zhixiong Shen, Torbjörn E. Törnqvist, Whitney J. Autin, Zenon Mateo, K. M. Straub, Barbara Mauz,

Geological formations and processes

Research Article| May 01, 2012 Rapid and widespread response of the Lower Mississippi River to eustatic forcing during the last glacial-interglacial cycle Zhixiong Shen; Zhixiong Shen † 1Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA †E-mail: zshen@tulane.edu Search for other works by this author on: GSW Google Scholar Torbjörn E. Törnqvist; Torbjörn E. Törnqvist 1Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA2Tulane/Xavier Center for Bioenvironmental Research, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA Search for other works by this author on: GSW Google Scholar Whitney J. Autin; Whitney J. Autin 3Department of the Earth Sciences, State University of New York, College at Brockport, Brockport, New York 14420, USA Search for other works by this author on: GSW Google Scholar Zenon Richard P. Mateo; Zenon Richard P. Mateo 4Department of Earth and Environmental Sciences, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7059, USA §Present address: Integrated Ocean Drilling Program-United States Implementing Organization, Texas A&M University, 1000 Discovery Drive, College Station, Texas 77845, USA. Search for other works by this author on: GSW Google Scholar Kyle M. Straub; Kyle M. Straub 1Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA Search for other works by this author on: GSW Google Scholar Barbara Mauz Barbara Mauz 5Department of Geography, University of Liverpool, Liverpool L69 7ZT, UK Search for other works by this author on: GSW Google Scholar Author and Article Information Zhixiong Shen † 1Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA Torbjörn E. Törnqvist 1Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA2Tulane/Xavier Center for Bioenvironmental Research, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA Whitney J. Autin 3Department of the Earth Sciences, State University of New York, College at Brockport, Brockport, New York 14420, USA Zenon Richard P. Mateo §Present address: Integrated Ocean Drilling Program-United States Implementing Organization, Texas A&M University, 1000 Discovery Drive, College Station, Texas 77845, USA. 4Department of Earth and Environmental Sciences, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7059, USA Kyle M. Straub 1Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118-5698, USA Barbara Mauz 5Department of Geography, University of Liverpool, Liverpool L69 7ZT, UK †E-mail: zshen@tulane.edu Publisher: Geological Society of America Revision Received: 28 Jul 2011 Accepted: 29 Jul 2011 Received: 15 Nov 2012 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2012 Geological Society of America GSA Bulletin (2012) 124 (5-6): 690–704. https://doi.org/10.1130/B30449.1 Article history Revision Received: 28 Jul 2011 Accepted: 29 Jul 2011 Received: 15 Nov 2012 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Zhixiong Shen, Torbjörn E. Törnqvist, Whitney J. Autin, Zenon Richard P. Mateo, Kyle M. Straub, Barbara Mauz; Rapid and widespread response of the Lower Mississippi River to eustatic forcing during the last glacial-interglacial cycle. GSA Bulletin 2012;; 124 (5-6): 690–704. doi: https://doi.org/10.1130/B30449.1 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 The Lower Mississippi Valley provides an exceptional field example for studying the response of a continental-scale alluvial system to upstream and downstream forcing associated with the large, orbitally controlled glacial-interglacial cycles of the late Quaternary. However, the lack of a numerical chronology for the widespread Pleistocene strata assemblage known as the Prairie Complex, which borders the Holocene floodplain of the Lower Mississippi River, has so far precluded such an analysis. Here, we apply optically stimulated luminescence (OSL) dating, mainly on silt-sized quartz from Prairie Complex strata. In total, 27 OSL ages indicate that the Prairie Complex consists of multiple allostratigraphic units that formed mainly during marine isotope stages 7, 5e, and 5a. Thus, the aggradation of the Prairie Complex is strongly correlated with the sea-level highstands of the last two glacial-interglacial cycles. Fluvial incision during the sea-level fall associated with the MIS 5a–MIS 4 transition extended as far inland as ∼600 km from the present-day shoreline, testifying to the dominant downstream control of fluvial stratigraphic architecture in the Lower Mississippi Valley. In addition, the short reaction time of the Lower Mississippi River suggests that large fluvial systems can respond much more rapidly to allogenic forcing than is commonly believed. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.