| Hydrogen and Oxygen Isotope Fractionation Mechanism in the Hydrothermal System and Its Geologic Significance |
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| 作者单位： | Chen Zhensheng;Zhang Ligang Yichang Institute of Geology and Mineral Resources，Chinese Academy of Geological Sciences，Yichang，Hubei Jiang Minxi |
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| 摘 要： | The geochemical behaviors of hydrogen and oxygen isotopes in the hydrothermal system and their inher-ent relationship with the water / rock exchange are discussed in this paper In addition to the temperature con-ditions, the effective W / R ratio is another factor controlling the changes in H and O isotope compositions ofthe altered rock and hydrothermal water. Besides, the application and geological significance of the water-rockexchange theory are also discussed in the light of the H and O isotope compositions and their variation charac-teristics of the mineralizing hydrothermal water and altered rocks from several mineral deposits. Finally, abrief evolutional model of H and O istotope compositions of meteoric and magmatic hydrothermal waters in ahydrothermal system is given.
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Hydrogen and Oxygen Isotope Fractionation Mechanism in the Hydrothermal System and Its Geologic Significance |
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| Chen Zhensheng,Zhang Ligang Yichang Institute of Geology and Mineral Resources,Chinese Academy of Geological Sciences,Yichang,Hubei Jiang Minxi. Hydrogen and Oxygen Isotope Fractionation Mechanism in the Hydrothermal System and Its Geologic Significance[J]. Acta Geologica Sinica (English Edition), 1992, 66(4): 397-409. DOI: 10.1111/j.1755-6724.1992.mp5004005.x |
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| Authors: | Chen Zhensheng Zhang Ligang Yichang Institute of Geology Mineral Resources Chinese Academy of Geological Sciences Yichang Hubei Jiang Minxi |
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| Abstract: | The geochemical behaviors of hydrogen and oxygen isotopes in the hydrothermal system and their inher-ent relationship with the water / rock exchange are discussed in this paper In addition to the temperature con-ditions, the effective W / R ratio is another factor controlling the changes in H and O isotope compositions ofthe altered rock and hydrothermal water. Besides, the application and geological significance of the water-rockexchange theory are also discussed in the light of the H and O isotope compositions and their variation charac-teristics of the mineralizing hydrothermal water and altered rocks from several mineral deposits. Finally, abrief evolutional model of H and O istotope compositions of meteoric and magmatic hydrothermal waters in ahydrothermal system is given. |
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| Keywords: | hydrothermal system isotope fractionation mechanism water/rock exchnage effective W/R ratio evolutional model |
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