DCO Project Summary

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Project Title
Carbon in Fluids
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Geologic evidence from carbonate mineral veins and mantle xenoliths shows that deep fluids are important agents for carbon transfer to and from deep reservoirs. We seek to better understand these fluids. We will (1) analyze the speciation of carbonate in fluids at deep Earth conditions, (2) investigate the solubility of carbonate minerals in subduction zone fluids, (3) utilize new algorithms for ab initio molecular dynamic calculations related to the behavior of aqueous solutions containing divalent anions, (4) investigate experimentally the bonding properties of carbon in C-O-H fluids in the deep Earth and icy giant planets, (5) investigate synthesis pathways and phase diagrams for complex hydrocarbon systems to conditions of Earth’s lower mantle, and (6) develop new equations of state for organic compounds dissolved in water.
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