Lithologic control on the form of soil-mantled hillslopes

Research Article| January 01, 2015 Lithologic control on the form of soil-mantled hillslopes Samuel A. Johnstone; Samuel A. Johnstone Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305, USA Search for other works by this author on: GSW Google Scholar George E. Hilley George E. Hilley Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Samuel A. Johnstone Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305, USA George E. Hilley Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305, USA Publisher: Geological Society of America Received: 06 Jul 2014 Revision Received: 29 Oct 2014 Accepted: 05 Nov 2014 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2014 Geological Society of America Geology (2015) 43 (1): 83–86. https://doi.org/10.1130/G36052.1 Article history Received: 06 Jul 2014 Revision Received: 29 Oct 2014 Accepted: 05 Nov 2014 First Online: 09 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 Samuel A. Johnstone, George E. Hilley; Lithologic control on the form of soil-mantled hillslopes. Geology 2015;; 43 (1): 83–86. doi: https://doi.org/10.1130/G36052.1 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 Slopes in steady-state soil-mantled landscapes tend to increase downslope in a way that balances local transport capacity with the sediment supplied from progressively larger source areas. Most formulations of sediment transport due to hillslope processes scale transport rate with local slope, which produces convex-up forms that are independent of the properties of the underlying lithologies. In this study, we document soil-mantled hillslopes that show variations in slope that mimic the underlying stratigraphy. We present stratigraphic and soil-thickness measurements, topographic analyses, and numerical models to demonstrate that variations in rock type can impact the forms of these soil-mantled hillslopes if hillslope transport rates scale with local slope and soil thickness. This demonstrates that hillslope forms in soil-mantled landscapes can be influenced by the underlying lithology through a coupling between the processes that produce soil from rock and those that transport this soil downslope. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.