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Hydrogen and Oxygen Isotope Fractionation Mechanism in the Hydrothermal System and Its Geologic Significance
Author(s) -
Zhensheng Chen,
Ligang Zhang
Publication year - 1992
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1992.mp5004005.x
Subject(s) - hydrothermal circulation , isotopes of oxygen , fractionation , geochemistry , geology , meteoric water , oxygen , isotope fractionation , hydrogen , oxygen isotope ratio cycle , equilibrium fractionation , isotope , stable isotope ratio , mineralogy , chemistry , paleontology , physics , organic chemistry , quantum mechanics
The geochemical behaviors of hydrogen and oxygen isotopes in the hydrothermal system and their inherent relationship with the water / rock exchange are discussed in this paper. In addition to the temperature conditions, the effective W / R ratio is another factor controlling the changes in H and O isotope compositions of the altered rock and hydrothermal water. Besides, the application and geological significance of the water‐rock exchange theory are also discussed in the light of the H and O isotope compositions and their variation characteristics of the mineralizing hydrothermal water and altered rocks from several mineral deposits. Finally, a brief evolutional model of H and O istotope compositions of meteoric and magmatic hydrothermal waters in a hydrothermal system is given.