Thermodynamic-kinetic Modeling of Chemical Weathering of Basaltic Tephra on Hawaii

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• 作者：M.V. Mironenko ; E.V. Cherkasova ; ^{wri-lab@geokhi.ru}
• 关键词：chemical thermodynamics ; geochemical modeling ; chemical weathering
• 刊名：Procedia Earth and Planetary Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：17
• 期：Complete
• 页码：124-127
• 全文大小：282 K
• 卷排序：17

文摘

A thermodynamic-kinetic model for interactions in water-rock systems has been modified to calculate water-rock interactions during fluid flow. We used published data on chemical composition of atmospheric precipitates at Hawaii and their abundance in Kaka Falls aria, the Island of Hawaii, a level of surface runoff, age and initial composition of basaltic tephra, mineralogical zoning of laterites, to adjust such a parameter of the model as a degree of exposure of the primary mineral surfaces to aqueous solution. The goal was to obtain an approximate agreement of scales of simulated and observed mineral alterations during certain time.