Abstract
Two variables, parent rock type and flushing rate (the amount of water flushed through the weathering profile per hectare per year), control the long-term average dissolved load of streams in forested watersheds of southwestern North Carolina, U.S.A. The same variables explain qualitative stability relations, as shown by stability field diagrams which are, in turn, consistent with the hydrology and kaolinite-gibbsite clay mineralogy of the profiles. Tardy’s Re, a simple semiquantitative mass-balance tool, ranges from 1.36 to 1.65, again qualitatively consistent with the known clay mineralogy of the systems. The consistency of hydrology, aqueous geochemistry and clay mineralogy places useful constraints on more sophisticated geochemical mass-balance models.
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Velbel, M.A. (1985). Hydrogeochemical Constraints on Mass Balances in Forested Watersheds of the Southern Appalachians. In: Drever, J.I. (eds) The Chemistry of Weathering. Nato ASI Series, vol 149. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5333-8_14
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DOI: https://doi.org/10.1007/978-94-009-5333-8_14
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