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Chinese Journal of Geochemistry

, Volume 9, Issue 4, pp 336–346 | Cite as

Distribution of hydrogen and oxygen isotopes in salt lakes of the Qinghai-Xizang Plateau, China

  • Zhang Baozhen
  • Zhang Pengxi
  • Ran Longde
  • Yang Wenbo
Article

Abstract

The Qinghai-Xizang Plateau is an area where a large number of salt lakes are distributed. We have collected several hundred samples of natural waters over the Plateau since 1976 and carried out researches on their hydrogen and oxygen isotopes. The results indicate that theδD and δ18O values of the salt lake waters over the Plateau range from −64.1 to +12.4‰ and from −11.19 to +8.62‰, respectively.

From the different types of surfaces, ground and lake waters of various salinities it is inferred that the compositions of H and O isotopes in the initial water of Qinghai Lake areδD=−55.0‰ and {ie336-1}; and those in the original water from the lakes in northern Xizang, areδD=−116.0‰ and {ie336-2}. Brines in the salt lakes are derived from rain water through prolonged circulation. Oilfield water also makes some contribution to the salt lakes in the Qaidam Basin. Similar slopes of evaporation lines of water isotopes are noticed for the Qinghai Lake area and northern Xizang. This is attributed to the evolution of the isotopes in these water bodies in an environment of middle latitude and high elevation.

Keywords

Lake Water Oxygen Isotope Salt Lake Qaidam Basin Geothermal Water 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Epstein, S. and Majeda, T. (1953) Variation of δ18O content of water from natural, sources.G. C. A., (4), 213–224.Google Scholar
  2. Zhang Pengxi et al. (1987) Salt Lakes in the Qaidam Basin. Science Press, Beijing.Google Scholar
  3. Zheng Shuhui et al. (1982) Research on stable isotopes of hydrogen and oxygen in precipitation in China. In: Proceedings of the Second National Symposium on Geochemistry of Isotopes, 323–326.Google Scholar

Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 1990

Authors and Affiliations

  • Zhang Baozhen
    • 1
  • Zhang Pengxi
    • 1
  • Ran Longde
    • 1
  • Yang Wenbo
    • 1
  1. 1.The Salt Lake Institute of the Chinese Academy of SciencesXining

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