Search Results - "Sverjensky, D A"

Subduction hides high-pressure sources of energy that may feed the deep subsurface biosphere by Vitale Brovarone, A., Sverjensky, D. A., Piccoli, F., Ressico, F., Giovannelli, D., Daniel, I.

“…Geological sources of H 2 and abiotic CH 4 have had a critical role in the evolution of our planet and the development of life and sustainability of the deep…”
Get full text

Silicate dissolution boosts the CO2 concentrations in subduction fluids by Tumiati, S., Tiraboschi, C., Sverjensky, D. A., Pettke, T., Recchia, S., Ulmer, P., Miozzi, F., Poli, S.

“…Estimates of dissolved CO 2 in subduction-zone fluids are based on thermodynamic models, relying on a very sparse experimental data base. Here, we present…”
Get full text

Subducted organic matter buffered by marine carbonate rules the carbon isotopic signature of arc emissions by Tumiati, S., Recchia, S., Remusat, L., Tiraboschi, C., Sverjensky, D. A., Manning, C. E., Vitale Brovarone, A., Boutier, A., Spanu, D., Poli, S.

“…Ocean sediments consist mainly of calcium carbonate and organic matter (phytoplankton debris). Once subducted, some carbon is removed from the slab and returns…”
Get full text

Mineral surfaces, geochemical complexities, and the origins of life by Hazen, Robert M, Sverjensky, Dimitri A

“…Crystalline surfaces of common rock-forming minerals are likely to have played several important roles in life's geochemical origins. Transition metal sulfides…”
Get full text

Highly oxidising fluids generated during serpentinite breakdown in subduction zones by Debret, B., Sverjensky, D. A.

“…Subduction zones facilitate chemical exchanges between Earth’s deep interior and volcanism that affects habitability of the surface environment. Lavas erupted…”
Get full text

Prediction of the thermodynamic properties of aqueous metal complexes to 1000 degrees C and 5 kb by Sverjensky, D A, Shock, E L, Helgeson, H C

“…A large number of aqueous metal complexes contribute significantly to hydrothermal, metamorphic, and magmatic processes in the crust of the Earth…”
Get full text

Geochemical modeling of the formation of an unconformity-type uranium deposit by Komninou, A, Sverjensky, D. A

“…Petrologic studies of alteration associated with uranium mineralization in unconformity-type uranium deposits have established a detailed paragenetic sequence…”
Get full text

Inorganic species in geologic fluids: Correlations among standard molal thermodynamic properties of aqueous ions and hydroxide complexes by Shock, Everett L., Sassani, David C., Willis, Marc, Sverjensky, Dimitri A.

“…Correlations among experimentally determined standard partial molal thermodynamic properties of inorganic aqueous species at 25°C and 1 bar allow estimates of…”
Get full text

Pre-ore hydrothermal alteration in an unconformity-type uranium deposit by Komninou, A., Sverjensky, D. A.

“…A study investigated hydrothermal alteration associated with the formation of unconformity-type uranium deposits. Chloritization is a pre-ore alteration event…”
Get full text

GEOSURF: a computer program for modeling adsorption on mineral surfaces from aqueous solution by Sahai, Nita, Sverjensky, Dimitri A.

“…A new program, GEOSURF, has been developed for calculating aqueous and surface speciation consistent with the triple-layer model of surface complexation…”
Get full text

Physical surface-complexation models for sorption at the mineral-water interface by Sverjensky, Dimitri A

“…Models of surface complexation of ions at oxide-water interfaces can be included quantitatively in surface-complexation theory by describing them using the…”
Get full text

A genetic metasomatic link between eclogitic and peridotitic diamond inclusions by Mikhail, S., Rinaldi, M., Mare, E.R., Sverjensky, D.A.

“…Diamond inclusions sample the otherwise inaccessible archive of Earth’s deep interior. The geochemical and petrological diversity of diamond inclusions…”
Get full text

Mobility of chromium in high temperature crustal and upper mantle fluids by Huang, J., Hao, J., Huang, F., Sverjensky, D.A.

Get full text

A linear free energy relationship for crystalline solids and aqueous ions by Sverjensky, Dimitri A, Molling, P. A

“…An empirically based linear free energy equation applicable to cations of any charge, radius or chemical type, is presented. The equation is analogous to the…”
Get full text

Linear free energy relations for predicting dissolution rates of solids by Sverjensky, Dimitri A

“…A QUANTITATIVE understanding of the rates and mechanisms of dissolution of crystalline solids in aqueous solutions is critical to the chemical modelling of…”
Get full text

Attachment of l-Glutamate to Rutile (α-TiO2): A Potentiometric, Adsorption, and Surface Complexation Study by Jonsson, Caroline M, Jonsson, Christopher L, Sverjensky, Dimitri A, Cleaves, Henderson J, Hazen, Robert M

“…Interactions between aqueous amino acids and mineral surfaces influence the bioavailability of amino acids in the environment, the viability of Ti implants in…”
Get full text

Hydrothermal alteration and the chemistry of ore-forming fluids in an unconformity-type uranium deposit by Komninou, A., Sverjensky, D.A.

“…Compositions of hydrothermal chlorite and fine-grained white mica from the inner and outer alteration halos in the Koongarra U deposit were analyzed by…”
Get full text

Prediction of the thermodynamic properties of aqueous metal complexes to 1000°C and 5 kb by Sverjensky, D.A., Shock, E.L., Helgeson, H.C.

“…A large number of aqueous metal complexes contribute significantly to hydrothermal, metamorphic, and magmatic processes in the crust of the Earth…”
Get full text

Prediction of surface charge on oxides in salt solutions: Revisions for 1:1 (M +L −) electrolytes by Sverjensky, Dimitri A.

“…Quantitative characterization of the development of proton surface charge on the surfaces of minerals is necessary for a fundamental understanding of reactions…”
Get full text

The lead and sulfur isotopic compositions of galena from a mississippi valley-type deposit in the New Lead Belt, Southeast Missouri by Sverjensky, D. A, Rye, D. M, Doe, B. R

Get full text