A model for assessing,quantifying, and correcting for index element mobility in weathering studies |
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| Authors: | Carleton R Bern Arthur F White |
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| Institution: | 1. US Geological Survey, Denver Federal Center, Denver, CO 80225, USA;2. US Geological Survey, 345 Middlefield Rd., Menlo Park, CA 94025, USA |
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| Abstract: | Evidence shows that high field strength (HFS) elements commonly used to index chemical weathering are variably mobile. This mobility may be linked to redistribution of suspended solids. A mass-balance model is presented that can quantify such redistribution without assuming immobility for any single element. Two tropical weathering profiles on quartz diorite and basalt are examined and redistribution of the HFS elements Zr and Ti is documented, along with potential corrections for the resulting changes in measured concentrations. |
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