Influence of Island Migration on Barrier-Island Sedimentation

Abstract

Research Article| January 01, 1967 Influence of Island Migration on Barrier-Island Sedimentation JOHN H HOYT; JOHN H HOYT Marine Inst, and Dept. Geology, University of Georgia, Sapelo Island, Georgia Search for other works by this author on: GSW Google Scholar VERNON J HENRY, JR. VERNON J HENRY, JR. Marine Inst, and Dept. Geology, University of Georgia, Sapelo Island, Georgia Search for other works by this author on: GSW Google Scholar Author and Article Information JOHN H HOYT Marine Inst, and Dept. Geology, University of Georgia, Sapelo Island, Georgia VERNON J HENRY, JR. Marine Inst, and Dept. Geology, University of Georgia, Sapelo Island, Georgia Publisher: Geological Society of America Received: 13 Jan 1966 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1967, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1967) 78 (1): 77–86. https://doi.org/10.1130/0016-7606(1967)78[77:IOIMOB]2.0.CO;2 Article history Received: 13 Jan 1966 First Online: 02 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 H HOYT, VERNON J HENRY; Influence of Island Migration on Barrier-Island Sedimentation. GSA Bulletin 1967;; 78 (1): 77–86. doi: https://doi.org/10.1130/0016-7606(1967)78[77:IOIMOB]2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract Barrier islands migrate along some coastal areas in the direction of dominant sediment transport. At the forward end of the island deposition occurs on the margin of the channel where the environment strongly influences the characteristics of barrier-island deposits. The depth of the channel, for example, exceeds two-to-three times that of other environments associated with barrier deposits. Moving along the coast, the channel erodes and reworks the deposits of other environments. The reworked area extends landward and seaward of the inlet and is several miles wide. The depth of reworking and the subsequent deposition preclude further modification by other agencies of the barrier-island environment. The erosion that accompanies transgression and regression may remove the upper level of barrier deposits, leaving modified channel sediments for interpretation and identification.Sedimentary modifications produced by island migration include textural changes, gross shape of the deposit, and steepening and reorientation of stratification. Recognition of the reorientation of stratification is particularly important in paleocurrent analysis. Modified channel sediments inter-finger seaward with shallow neritic deposits and landward with lagoonal salt-marsh sediments.Although the duration of the Holocene high stand of the sea was too short to permit major migration-modification of Holocene islands, there was probably enough time for the extensive reworking of many ancient deposits. Studies on channel sediments and on the extent of island migration can provide information on the environment during the deposition of coastal sediments. 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.