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A Sedimentary Model for Determining Paleotidal Range

1971; Geological Society of America; Volume: 82; Issue: 9 Linguagem: Inglês

10.1130/0016-7606(1971)82[2585

1943-2674

George Klein,

Geological and Geophysical Studies

Research Article| September 01, 1971 A Sedimentary Model for Determining Paleotidal Range GEORGE DEVRIES KLEIN GEORGE DEVRIES KLEIN Department of Geology, University of Illinois, Urbana, Illinois 61801 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1971) 82 (9): 2585–2592. https://doi.org/10.1130/0016-7606(1971)82[2585:ASMFDP]2.0.CO;2 Article history received: 12 Mar 1971 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation GEORGE DEVRIES KLEIN; A Sedimentary Model for Determining Paleotidal Range. GSA Bulletin 1971;; 82 (9): 2585–2592. doi: https://doi.org/10.1130/0016-7606(1971)82[2585:ASMFDP]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 Prograding clastic tidal coastlines in embayed areas, lagoons, and open coasts generate a graded, fining-upward sequence of sediments. This graded sequence is produced by a distinct zonation of sediment transport processes across a clastic intertidal flat. These transport zones are (1) tidal bedload transport (producing subtidal sand), (2) combination of tidal bedload transport and emergence runoff prior to exposure (producing low tidal flat sand), (3) alternation of bedload and suspension sedimentation (producing midflat interbedded sands and muds), and (4) suspension sedimentation (producing high tidal flat muds and clays). The distinction between subtidal and low intertidal flat sands is achieved by identifying sedimentary structures indicating late-stage emergence runoff prior to exposure in the low tidal flat sands. The contact between these two sands, one with and the other without emergence runoff sedimentary structures, coincides with the postion of mean low water. The top of the graded, fining-upward sequence consists of clay-sized sediment and coincides with the level of mean high tide.Such prograded fining-upward sequences contain within them a preserved record of tidal range. In Holocene sediments, the thickness of the interval representing low tidal flat, midflat and high tidal flat sediments coincides with mean tidal range. In fossil equivalents, the thickness of similar sequences gives a quantitative measurement of paleotidal range. 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.