Chemical geothermometry and geobarometry in hydrothermal aqueous solutions: A theoretical investigation based on a mineral-solution equilibrium model
Identifieur interne : 000422 ( Main/Merge ); précédent : 000421; suivant : 000423Chemical geothermometry and geobarometry in hydrothermal aqueous solutions: A theoretical investigation based on a mineral-solution equilibrium model
Auteurs : Giovanni Chiodini [Italie] ; Roberto Cioni [Italie] ; Massimo Guidi [Italie] ; Luigi Marini [Italie]Source :
- Geochimica et Cosmochimica Acta [ 0016-7037 ] ; 1991.
English descriptors
- KwdEn :
- Acta, Activity coefficients, Anhydrite, Anion, Aqueous solution, Aqueous solutions, Aqueous species, Arnorsson, Assemblage, Bicarbonate, Broadlands, Calcite, Calcite muscovite, Carbon dioxide, Cation, Chemical constituent, Chemical constituents, Chiodini, Chloride, Chloride content, Chloride molality, Clinochlore, Clinozoisite, Complex species, Corresponding values, Cosmochim, Council trans, Elli, Equilibrium model, Equilibrium temperature, Fiars, Final regression equation, Fluoride, Fluoride contents, Fluorite, Free ions, Geochim, Geoindicators, Geothermal, Geothermal fluids, Geothermal mineral equilibria, Geothermal systems, Geothermal waters, Geothermal wells, Geothermics, Geothermometer, Giggenbach, Guidi, High temperature, Hydrothermal, Hydrothermal solutions, Hydrothermal systems, Independent variables, Kizildere, Latera, Mineral assemblage, Mineral paragenesis, Mineral phases, Molality, Multiple correlation coefficient, Muscovite, Paragenesis, Partial pressure, Pco2, Pcoz, Quartz, Quartz equilibrium temperature, Quartz geothermometer, Regression analysis, Regression equations, Significant changes, Silicate, Solid phases, Solute, Stable mineral assemblage, Straight lines, Sulfate, Tcrs, Theoretical concentrations, Theoretical contents, Theoretical model, Thermodynamic data, Total chloride content, Total concentration, Total contents, Univariant, Univariant conditions, Univariant reactions.
- Teeft :
- Acta, Activity coefficients, Anhydrite, Anion, Aqueous solution, Aqueous solutions, Aqueous species, Arnorsson, Assemblage, Bicarbonate, Broadlands, Calcite, Calcite muscovite, Carbon dioxide, Cation, Chemical constituent, Chemical constituents, Chiodini, Chloride, Chloride content, Chloride molality, Clinochlore, Clinozoisite, Complex species, Corresponding values, Cosmochim, Council trans, Elli, Equilibrium model, Equilibrium temperature, Fiars, Final regression equation, Fluoride, Fluoride contents, Fluorite, Free ions, Geochim, Geoindicators, Geothermal, Geothermal fluids, Geothermal mineral equilibria, Geothermal systems, Geothermal waters, Geothermal wells, Geothermics, Geothermometer, Giggenbach, Guidi, High temperature, Hydrothermal, Hydrothermal solutions, Hydrothermal systems, Independent variables, Kizildere, Latera, Mineral assemblage, Mineral paragenesis, Mineral phases, Molality, Multiple correlation coefficient, Muscovite, Paragenesis, Partial pressure, Pco2, Pcoz, Quartz, Quartz equilibrium temperature, Quartz geothermometer, Regression analysis, Regression equations, Significant changes, Silicate, Solid phases, Solute, Stable mineral assemblage, Straight lines, Sulfate, Tcrs, Theoretical concentrations, Theoretical contents, Theoretical model, Thermodynamic data, Total chloride content, Total concentration, Total contents, Univariant, Univariant conditions, Univariant reactions.
Abstract
Abstract: The theoretical compositions of an aqueous solution in equilibrium with a mineral assemblage made up of low-albite, K-feldspar, either a Ca-Al-silicate or calcite, clinochlore, muscovite, quartz, anhydrite, and fluorite, under varying T-PCO2-mcl conditions of geothermal interest, indicate that 1.1) the total SO4 content as well as the NaK, K2Mg, and SO4F2 ratios are potential geothermometers;2.2) the total HCO3 content as well as the K2Ca, CaMg, HCO3F, and (HCO3)2SO4 ratios are potential PCO2 indicators;3.3) the Na, K, Ca, and Mg total contents as well as the Na2Mg and Na2Ca ratios are mainly controlled by the total ionic salinity and are therefore hardly suitable as geoindicators.A preliminary test of the equations involving total HCO3 content as well as K2Ca and HCO3F ratios as PCO2 indicators have provided satisfactory results.
Url:
DOI: 10.1016/0016-7037(91)90438-B
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Chiodini</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Scienze della Terra, Università di Perugia, Piazza della Università, 06100 Perugia</wicri:regionArea><wicri:noRegion>06100 Perugia</wicri:noRegion></affiliation></author><author><name sortKey="Cioni, Roberto" sort="Cioni, Roberto" uniqKey="Cioni R" first="Roberto" last="Cioni">Roberto Cioni</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Istituto di Geocronologia e Geochimica Isotopica, CNR, Via Cardinal Maffi 36, 56127 Pisa</wicri:regionArea><placeName><settlement type="city">Pise</settlement><region nuts="2">Toscane</region></placeName></affiliation></author><author><name sortKey="Guidi, Massimo" sort="Guidi, Massimo" uniqKey="Guidi M" first="Massimo" last="Guidi">Massimo Guidi</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Geotermica Italiana srl, Lungarno Mediceo 16, 56127 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type="ISSN">0016-7037</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0016-7037</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acta</term><term>Activity coefficients</term><term>Anhydrite</term><term>Anion</term><term>Aqueous solution</term><term>Aqueous solutions</term><term>Aqueous species</term><term>Arnorsson</term><term>Assemblage</term><term>Bicarbonate</term><term>Broadlands</term><term>Calcite</term><term>Calcite muscovite</term><term>Carbon dioxide</term><term>Cation</term><term>Chemical constituent</term><term>Chemical constituents</term><term>Chiodini</term><term>Chloride</term><term>Chloride content</term><term>Chloride molality</term><term>Clinochlore</term><term>Clinozoisite</term><term>Complex species</term><term>Corresponding values</term><term>Cosmochim</term><term>Council trans</term><term>Elli</term><term>Equilibrium model</term><term>Equilibrium temperature</term><term>Fiars</term><term>Final regression equation</term><term>Fluoride</term><term>Fluoride contents</term><term>Fluorite</term><term>Free ions</term><term>Geochim</term><term>Geoindicators</term><term>Geothermal</term><term>Geothermal fluids</term><term>Geothermal mineral equilibria</term><term>Geothermal systems</term><term>Geothermal waters</term><term>Geothermal wells</term><term>Geothermics</term><term>Geothermometer</term><term>Giggenbach</term><term>Guidi</term><term>High temperature</term><term>Hydrothermal</term><term>Hydrothermal solutions</term><term>Hydrothermal systems</term><term>Independent variables</term><term>Kizildere</term><term>Latera</term><term>Mineral assemblage</term><term>Mineral paragenesis</term><term>Mineral phases</term><term>Molality</term><term>Multiple correlation coefficient</term><term>Muscovite</term><term>Paragenesis</term><term>Partial pressure</term><term>Pco2</term><term>Pcoz</term><term>Quartz</term><term>Quartz equilibrium temperature</term><term>Quartz geothermometer</term><term>Regression analysis</term><term>Regression equations</term><term>Significant changes</term><term>Silicate</term><term>Solid phases</term><term>Solute</term><term>Stable mineral assemblage</term><term>Straight lines</term><term>Sulfate</term><term>Tcrs</term><term>Theoretical concentrations</term><term>Theoretical contents</term><term>Theoretical model</term><term>Thermodynamic data</term><term>Total chloride content</term><term>Total concentration</term><term>Total contents</term><term>Univariant</term><term>Univariant conditions</term><term>Univariant reactions</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Acta</term><term>Activity coefficients</term><term>Anhydrite</term><term>Anion</term><term>Aqueous solution</term><term>Aqueous solutions</term><term>Aqueous species</term><term>Arnorsson</term><term>Assemblage</term><term>Bicarbonate</term><term>Broadlands</term><term>Calcite</term><term>Calcite muscovite</term><term>Carbon dioxide</term><term>Cation</term><term>Chemical constituent</term><term>Chemical constituents</term><term>Chiodini</term><term>Chloride</term><term>Chloride content</term><term>Chloride molality</term><term>Clinochlore</term><term>Clinozoisite</term><term>Complex species</term><term>Corresponding values</term><term>Cosmochim</term><term>Council trans</term><term>Elli</term><term>Equilibrium model</term><term>Equilibrium temperature</term><term>Fiars</term><term>Final regression equation</term><term>Fluoride</term><term>Fluoride contents</term><term>Fluorite</term><term>Free ions</term><term>Geochim</term><term>Geoindicators</term><term>Geothermal</term><term>Geothermal fluids</term><term>Geothermal mineral equilibria</term><term>Geothermal systems</term><term>Geothermal waters</term><term>Geothermal wells</term><term>Geothermics</term><term>Geothermometer</term><term>Giggenbach</term><term>Guidi</term><term>High temperature</term><term>Hydrothermal</term><term>Hydrothermal solutions</term><term>Hydrothermal systems</term><term>Independent variables</term><term>Kizildere</term><term>Latera</term><term>Mineral assemblage</term><term>Mineral paragenesis</term><term>Mineral phases</term><term>Molality</term><term>Multiple correlation coefficient</term><term>Muscovite</term><term>Paragenesis</term><term>Partial pressure</term><term>Pco2</term><term>Pcoz</term><term>Quartz</term><term>Quartz equilibrium temperature</term><term>Quartz geothermometer</term><term>Regression analysis</term><term>Regression equations</term><term>Significant changes</term><term>Silicate</term><term>Solid phases</term><term>Solute</term><term>Stable mineral assemblage</term><term>Straight lines</term><term>Sulfate</term><term>Tcrs</term><term>Theoretical concentrations</term><term>Theoretical contents</term><term>Theoretical model</term><term>Thermodynamic data</term><term>Total chloride content</term><term>Total concentration</term><term>Total contents</term><term>Univariant</term><term>Univariant conditions</term><term>Univariant reactions</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The theoretical compositions of an aqueous solution in equilibrium with a mineral assemblage made up of low-albite, K-feldspar, either a Ca-Al-silicate or calcite, clinochlore, muscovite, quartz, anhydrite, and fluorite, under varying T-PCO2-mcl conditions of geothermal interest, indicate that 1.1) the total SO4 content as well as the NaK, K2Mg, and SO4F2 ratios are potential geothermometers;2.2) the total HCO3 content as well as the K2Ca, CaMg, HCO3F, and (HCO3)2SO4 ratios are potential PCO2 indicators;3.3) the Na, K, Ca, and Mg total contents as well as the Na2Mg and Na2Ca ratios are mainly controlled by the total ionic salinity and are therefore hardly suitable as geoindicators.A preliminary test of the equations involving total HCO3 content as well as K2Ca and HCO3F ratios as PCO2 indicators have provided satisfactory results.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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