DCO Project Summary

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Project Title
Solubility of Carbonate Minerals and Aqueous CO2 Speciation
Start DateEnd Date
2011-10-01 2013-09-01
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Earth’s deep carbon cycle is strongly influenced by the reactivity of carbonate minerals along the P-T paths on which they are transported through the deep crust and mantle. We will undertake carbonate mineral solubility measurements in a diamond anvil cell optimized for x-ray fluorescence measurements of calcium carbonates in NaCl-H2O solutions at high pressure and temperature. We will also undertake solubility experiments in the presence of silicate minerals to access fluid compositions typical of subduction-zone processes. These experimental data will be used to calculate thermodynamic data relevant for use in geochemical models.
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