Preservation potential of sedimentary event layers

Abstract

Research Article| September 01, 1990 Preservation potential of sedimentary event layers Robert A. Wheatcroft Robert A. Wheatcroft 1School of Oceanography, WB-10, University of Washington, Seattle, Washington 98195 Search for other works by this author on: GSW Google Scholar Author and Article Information Robert A. Wheatcroft 1School of Oceanography, WB-10, University of Washington, Seattle, Washington 98195 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1990) 18 (9): 843–845. https://doi.org/10.1130/0091-7613(1990)018<0843:PPOSEL>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 Robert A. Wheatcroft; Preservation potential of sedimentary event layers. Geology 1990;; 18 (9): 843–845. doi: https://doi.org/10.1130/0091-7613(1990)018<0843:PPOSEL>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 Preservation potential of sedimentary event layers (e.g., ash layers or tempestites) is a function of net sedimentation rate and biogenous mixing rate. Previous studies that have used an inverse Péclet number to scale the problem in terms of advection or diffusion are in error due to the improper inclusion of the surface mixed layer thickness as the sole length scale. Herein, focus is on time scales. If the transit time (i.e., time required to advect the signal through the biologically active zone) is less than the dissipation time (i.e., time required to destroy the signal), then some fraction of the original signal is preserved. A simple quantitative model, based on the diffusion analogy of sediment mixing, estimates the actual percentage of preserved signal under various combinations of sedimentation rate, mixing rate, and event layer thickness. 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.