2008/01/01 by J. C. Hill, P. T. Gayes, Neal W. Driscoll +2 · 1 voice · 1 citation
Earth and Planetary Sciences · Environmental Science · #Coastal and Marine Dynamics #Coastal wetland ecosystem dynamics #Oceanographic and Atmospheric Processes
paper · doi:10.1130/g24651a.1
openalex publication_date 2008/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Research Article| June 01, 2008 Iceberg scours along the southern U.S. Atlantic margin Jenna C. Hill; Jenna C. Hill * 1Coastal Carolina University, Burroughs and Chapin Center for Marine and Wetland Studies, Conway, South Carolina 29526, USA *E-mail: [email protected]. Search for other works by this author on: GSW Google Scholar Paul T. Gayes; Paul T. Gayes 1Coastal Carolina University, Burroughs and Chapin Center for Marine and Wetland Studies, Conway, South Carolina 29526, USA Search for other works by this author on: GSW Google Scholar Neal W. Driscoll; Neal W. Driscoll 2Scripps Institution of Oceanography, University of California–San Diego, La Jolla, California 92093, USA Search for other works by this author on: GSW Google Scholar Elizabeth A. Johnstone; Elizabeth A. Johnstone 2Scripps Institution of Oceanography, University of California–San Diego, La Jolla, California 92093, USA Search for other works by this author on: GSW Google Scholar George R. Sedberry George R. Sedberry 3Gray's Reef National Marine Sanctuary, National Oceanic and Atmospheric Administration, Savannah, Georgia 31411, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Jenna C. Hill * 1Coastal Carolina University, Burroughs and Chapin Center for Marine and Wetland Studies, Conway, South Carolina 29526, USA Paul T. Gayes 1Coastal Carolina University, Burroughs and Chapin Center for Marine and Wetland Studies, Conway, South Carolina 29526, USA Neal W. Driscoll 2Scripps Institution of Oceanography, University of California–San Diego, La Jolla, California 92093, USA Elizabeth A. Johnstone 2Scripps Institution of Oceanography, University of California–San Diego, La Jolla, California 92093, USA George R. Sedberry 3Gray's Reef National Marine Sanctuary, National Oceanic and Atmospheric Administration, Savannah, Georgia 31411, USA *E-mail: [email protected]. Publisher: Geological Society of America Received: 27 Nov 2007 Revision Received: 12 Feb 2008 Accepted: 19 Feb 2008 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2008 Geological Society of America Geology (2008) 36 (6): 447–450. https://doi.org/10.1130/G24651A.1 Article history Received: 27 Nov 2007 Revision Received: 12 Feb 2008 Accepted: 19 Feb 2008 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 Jenna C. Hill, Paul T. Gayes, Neal W. Driscoll, Elizabeth A. Johnstone, George R. Sedberry; Iceberg scours along the southern U.S. Atlantic margin. Geology 2008;; 36 (6): 447–450. doi: https://doi.org/10.1130/G24651A.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 Rapid climate fluctuations associated with ice-sheet oscillations have resulted in pulses of iceberg discharge that are recorded by iceberg scour marks along continental shelves and ice-rafted debris deposits across the North Atlantic. Iceberg transport is largely controlled by ocean surface currents; therefore, iceberg trajectories can serve as a proxy for paleo-circulation studies. Records of iceberg transport from ice-rafted debris (i.e., Heinrich layers) in the North Atlantic suggest that most icebergs released during Quaternary glaciations were entrained in a cyclonic subpolar gyre restricted to polar and mid-latitudes; however, new data suggest that there may have been an additional southerly component of transport along the western Atlantic margin. Here, we present evidence of extensive iceberg scouring across the upper slope offshore of South Carolina, ~1000 km south of the proximal ice margin during Quaternary glacial maximums. The location and orientation of the keel marks suggest that icebergs were entrained in a southwestward-flowing coastal current. At present, warm waters of the rapid, northeastward-flowing Gulf Stream bathe the upper slope off the southeastern United States. An offshore shift in the Gulf Stream axis during sea-level lowstand may have allowed glacially fed coastal currents to penetrate farther south. This may be the first evidence of iceberg rafting to subtropical latitudes in the North Atlantic. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.