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Discrepancy between mineral residence time and soil age: Implications for the interpretation of chemical weathering rates

2007; Geological Society of America; Volume: 36; Issue: 1 Linguagem: Inglês

10.1130/g24285a.1

1943-2682

Kyungsoo Yoo, Simon M. Mudd,

Geology and Paleoclimatology Research

Research Article| January 01, 2008 Discrepancy between mineral residence time and soil age: Implications for the interpretation of chemical weathering rates Kyungsoo Yoo; Kyungsoo Yoo 1University of Delaware, Plant and Soil Sciences Department, Newark, Delaware 19716, USA Search for other works by this author on: GSW Google Scholar Simon Marius Mudd Simon Marius Mudd 2School of GeoSciences, University of Edinburgh, Edinburgh EH9 3JW, UK Search for other works by this author on: GSW Google Scholar Geology (2008) 36 (1): 35–38. https://doi.org/10.1130/G24285A.1 Article history received: 19 Apr 2007 rev-recd: 23 Aug 2007 accepted: 27 Aug 2007 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 Kyungsoo Yoo, Simon Marius Mudd; Discrepancy between mineral residence time and soil age: Implications for the interpretation of chemical weathering rates. Geology 2008;; 36 (1): 35–38. doi: https://doi.org/10.1130/G24285A.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 Virtually all soil chronosequence studies have equated the degree of mineral weathering with the soil age, which is equal to the time since the cessation of erosion or deposition. The primary minerals from the parent material, however, enter the soil as the weathering front propagates downward and are depleted via chemical weathering. The residence time of minerals is thus a function of both the rate of conversion of parent material to soil (i.e., soil production) and the minerals' susceptibility to chemical weathering reactions. We find that mineral residence times are significantly shorter than the soil age. By mathematically considering the interactions among soil production and chemical weathering, we demonstrate that traditional estimates of mineral-specific chemical weathering rates from soil chronosequences may diverge by several orders of magnitude from the actual weathering rates. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.