Quantification of soil production and downslope creep rates from cosmogenic 10Be accumulations on a hillslope profile

Research Article| April 01, 1993 Quantification of soil production and downslope creep rates from cosmogenic 10Be accumulations on a hillslope profile James A. McKean; James A. McKean 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar William E. Dietrich; William E. Dietrich 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar Robert C. Finkel; Robert C. Finkel 2Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, California 94550 Search for other works by this author on: GSW Google Scholar John R. Southon; John R. Southon 2Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, California 94550 Search for other works by this author on: GSW Google Scholar Marc W. Caffee Marc W. Caffee 2Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, California 94550 Search for other works by this author on: GSW Google Scholar Geology (1993) 21 (4): 343–346. https://doi.org/10.1130/0091-7613(1993)0212.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation James A. McKean, William E. Dietrich, Robert C. Finkel, John R. Southon, Marc W. Caffee; Quantification of soil production and downslope creep rates from cosmogenic 10Be accumulations on a hillslope profile. Geology 1993;; 21 (4): 343–346. doi: https://doi.org/10.1130/0091-7613(1993)0212.3.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 Average soil transport rates over a period of ∼3500 yr on a convex soil-mantled hillslope have been quantified using a mass-balance model that incorporates the soil concentration of the cosmogenic isotope 10Be. The 10Be model results support the assumption used in most geomorphic models that the soil creep rate is proportional to surface gradient. The predicted diffusion coefficient is 360 ±55 cm3 ⋅ yr-1 ⋅ cm-1 contour length and the average rate of soil production is 0.026 ±0.007 cm/yr. Within the uncertainty of this technique, the data do not reject G. K. Gilbert's hypothesis that some hillslopes may exist in a condition of dynamic equilibrium with a uniform soil production rate. However, the model does not require an assumption of dynamic equilibrium and may be an approach that uniquely allows the quantification of a local soil-production rate law. 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.