Frozen dynamics of migrating bedforms

Research Article| January 01, 2005 Frozen dynamics of migrating bedforms Douglas J. Jerolmack; Douglas J. Jerolmack 1Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar David Mohrig David Mohrig 1Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Douglas J. Jerolmack 1Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA David Mohrig 1Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Publisher: Geological Society of America Received: 05 Jun 2004 Revision Received: 18 Sep 2004 Accepted: 21 Sep 2004 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (1): 57–60. https://doi.org/10.1130/G20897.1 Article history Received: 05 Jun 2004 Revision Received: 18 Sep 2004 Accepted: 21 Sep 2004 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Douglas J. Jerolmack, David Mohrig; Frozen dynamics of migrating bedforms. Geology 2005;; 33 (1): 57–60. doi: https://doi.org/10.1130/G20897.1 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 Here we show how a continuum granular flow model can replicate realistic self-organizing subaqueous bedforms, and we explore how a record of this dynamic topography is transferred into the substrate where it can be fossilized. Modeled bedform behavior is quantitatively compared to laboratory and field data. Sediment scouring and deposition by migrating bedforms produce sets of partially preserved bedforms recording nonlinear behavior at the sediment-fluid interface. Model results show the importance of spatial and temporal variations in bedform size and migration rate to the generation of sets. Addition of net bed aggradation to modeled bedforms allows us to explore the preservation of topography under a wide range of depositional conditions. We present new relationships among aggradation rate, bedform migration rate, and set thickness. Variability of set thickness is shown to be a product of the competition between bed aggradation and bedform migration rates. These results show how using the entire distribution of set thickness for ancient strata can refine estimates of the formative paleoenvironmental conditions. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.