Características geoquímicas e isotópicas del carbono en el sistema geotérmico de Los Azufres, Mich.
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Abstract
We discuss the carbon stable iso tope geochemistry of Los Azufres geothermal system. ·Carbon dioxide gas from the gas phase of 13 productive wells was trapped in a 4N NaOH solution, precipitated as SrC03 and then liberated with 100% H3P04 under vacuum. The libcrated COz was analyzed with a mass spectrometer lo determine 1)13C. The 1)13C values lie in the range -11 to -7%0. It is concluded that the COz from the reservoir of Los Azufres geothermal system is of magmatic origino The enrichment of 1)13C with clevation confirms the existence of boiling and partial condensation in the productive zone of the reservoir.
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References
DREVER, J., 1982. The geochemistry of natural waters. Prentice Hall. New Jersey, USA, p. 551.
ELLIS, A. J. and W. A. J. MAHON, 1977. Chemistry and Geothermal Systems. Academic Press. New York, USA, pp. 80-82.
GIGGENBACH, W. F., 1980. Geothermal gas equilibria. Geochem. Cosmochem. Acta. 46, 150-165.
GIGGENBACH, W. y J. L. QUIJANO, 1981. Estudio isotópico de las aguas del campo geotérmico de Los Azufres. Reporte Interno, CFE, México.
HENLEY, R, W. and A. J. ELLIS, 1983. Geothermal systems ancient and modern: A geochemical review. Earth Sci. Rev., 319, 1-50. DOI: https://doi.org/10.1016/0012-8252(83)90075-2
HENLEY, R., A. H. TRUESDELL and P. B. BARTON, 1984. Fluid-mineral equilibria in hydrothermal systems, Society of Economic Geologists. 268 pp. DOI: https://doi.org/10.5382/Rev.01
HOEFS, J., 1980. Stable isotope geochemistry: Mineral and rocks, 2nd. edition. Springer-Verlag. Heidelberg-New York. 203 pp. DOI: https://doi.org/10.1007/978-3-662-02290-0
IGLESIAS, E. Y ARELLANO, V., 1985a. A one dimensional vertical model of Los Azufres, Mexico, geothermal reservoir in its natural state. Geothermal Resources Coun. Trans. 9, part II, pp. 331-336.
IGLESIAS, E., V. ARELLANO y A. GARFIAS, 1985b. The natural thermodynamic state of the fluids in Los Azufres geothermal reservoir. Proceedings, Tenth workshop Geotherm. Reserv. Eng., Stanford University, Stanford, California. 241-246.
IGLESIAS, E. y V. ARELLANO, 1987. Sistemas hidrotermales 'vap-liq' y su aplicación al yacimiento geotérmico de Los Azufres, Mich. Simposio Internacional sobre Desarrollo y Explotación de Recursos Geotérmicos, pp. 251-261.
MAHON, W. A. J., G. D. McDOWELL and J. B. FINLAYSON, 1980. Carbon dioxide: Its role in geothermal systems. N. Z. J. Sci., 323, 133-148.
McCREA, J. M., 1950. On the isotopic chemistry of carbonates and a paleotemperature scale. J. Chem. Phys. 18, 6, 849-857. DOI: https://doi.org/10.1063/1.1747785
MICHAELIS, J., E. USDOWSKI and G. MENSCHEL, 1985. Partitioning of 13C and 12C on the degassing of CO2 and the precipitation of calcite. Rayleigh-type fractionation and a kinetic model. Am. J. Sci., 285, 318-327. DOI: https://doi.org/10.2475/ajs.285.4.318
MOOK, W. G., J. C. BOMMERSON and W. H. STAVERMAN, 1974. Carbon isotope fractionation between dissolved bicarbonate and gaseous carbon dioxide. Earth Planet Sci. Lett., 322, 169-176. DOI: https://doi.org/10.1016/0012-821X(74)90078-8
NIEVA, D., R. M. BARRAGAN, M. CATHELINEAU, E. GONZALEZ, G. IZQUIERDO, R, OLIVER, E. PORTUGAL, E. SANTOYO y M. VERMA, 1987a. Estudio de la estructura hidrológica y de la distribución de parámetros físico-químicos en el yacimiento de Los Azufres, Mich., fase II. IIE-11-2011-1 04-F. Reporte Interno, Inst. Inv. Eléct. México, 159 pp.
NIEVA, D., M. VERMA, R, M. BARRAGAN, E. PORTUGAL, J. ORTIZ and J. L. QUIJANO, 1987b. Chemical and isotopic evidence of steam upflow and partial condensation in Los Azufres reservoir. Twelfth Workshop Geotherm, Reserv. Eng., Stanford University, Stanford, California, pp. 253-259.
NIEVA, D., M. VERMA, E. SANTOYO, R. M. BARRAGAN, E. PORTUGAL, J. ORTIZ y J. L. QUIJANO, 1987c. Estructura hidrológica del yacimiento de Los Azufres. Memorias del Simposio Internacional sobre Desarrollo y Explotación de Recursos Geotérmicos. IIE, Cuernavaca, Mor., México. pp. 202-213.
OHMOTO, H., 1972. Systematics of sulfur and carbon isotopes in hydrothermal ore deposits. Economic Geology, 67, 5, 551-578. DOI: https://doi.org/10.2113/gsecongeo.67.5.551
PANICHI, C. and E. TONGIORGI, 1976. Carbon isotope composition of CO2 from springs, fumaroles, mofettes and travertines of central and southern Italy: a preliminary' prospection method of geothermal areas. Proc. 2nd. U.N. Symp. Develop. Use of Geothermal Resources, San Francisco 1, pp. 815-825.
QUIJANO, J. L., 1983. Consideraciones geoquímicas sobre los pozos A-6, A-13, A-17 y A-19 del campo geotérmico de Los Azufres, Michoacán. Memorias de la Primera Reunión Interdisciplinaria de Actividades sobre el Campo Geotérmico de Los Azufres, Mich., pp. 10-16.
RAMIREZ, D. E., M. P. VERMA, D. NIEVA, J. L. QUIJANO y J. MORENO., 1988. Ebullición y mezcla en procesos de formación de fuentes termales en Los Azufres, Mich., Geotermia. Rev. Mex. Geoenergía. 4, 2, 59-67.
STUMM, W. and J. J. MORGAN, 1981. Aquatic chemistry: An introduction emphazising chemical equilibria in natural waters, 2nd Edition, John Wiley and Sons, 780 pp.
TABACO, F., 1990. Estudio isotópico del carhono-13 en fluidos hidrotermales del campo geotérmico de Los Azufres, Mich. Tesis Licenciatura, IIE-Universidad Autónoma de Tlaxcala, Apizaco, Tlax., México.
THODE, G. H., M. SHIMA, C. E. REES and K. V. KRISHNAMURTY, 1965. Carbon-13 effect isotopes in systems containing carbon dioxide, bicarbonate and metal ions. Canadian J. Chem. 343, 582-595. DOI: https://doi.org/10.1139/v65-076
VERMA, M. P., D. NIEVA, E. SANTOYO, R. M. BARRAGAN and E. PORTUGAL, 1989. Water-Rock Interaction WRI-6, Ed. D. L. Miles, A. A. Balkema, Rotterdam.
VOGEL, J. C., P. M. GROOTES and W. G. MOOK, 1970. Isotopic fractionation between gaseous and dissolved carbon dioxide. Z. Physik. 230, 225-238. DOI: https://doi.org/10.1007/BF01394688