Origin of the tufa at Jiuzhaigou scenic spot in Sichuan

YAN Hao; LIU Zai hua; DENG Gui ping; SUN Hai long; ZHANG Jin liu

doi:10.3969/j.issn.1001-4810.2013.01.003

Volume 32 Issue 1

Mar. 2013

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YAN Hao, LIU Zai hua, DENG Gui ping, SUN Hai long, ZHANG Jin liu. Origin of the tufa at Jiuzhaigou scenic spot in Sichuan[J]. CARSOLOGICA SINICA, 2013, 32(1): 15-22. doi: 10.3969/j.issn.1001-4810.2013.01.003

Citation:

YAN Hao, LIU Zai hua, DENG Gui ping, SUN Hai long, ZHANG Jin liu. Origin of the tufa at Jiuzhaigou scenic spot in Sichuan[J]. CARSOLOGICA SINICA, 2013, 32(1): 15-22. doi: 10.3969/j.issn.1001-4810.2013.01.003

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Origin of the tufa at Jiuzhaigou scenic spot in Sichuan

doi: 10.3969/j.issn.1001-4810.2013.01.003

1.
Institute of Geochemistry/State Key Laboratory of Environmental Geochemistry
2.
Jiuzhaigou National Scenic Area Administration, Jiuzhaigou
3.
Institute of Geochemistry/State Key Laboratory of Environmental Geochemistry；Hefei College

Received Date: 2012-11-30
Publish Date: 2013-03-25

Abstract

Abstract

Jiuzhaigou is well known for its unique and gorgeous scenery. As a key factor of the landscape, tufa there has high tourist value and scientific value. The hydrochemistry, stable hydrogen and oxygen isotope (δD and δ18O) in some key water samples and stable carbon isotope (δ13C) in dissolved inorganic carbon (DIC) as well as modern tufa are examined to understand the origin of the tufa and especially the CO2 needed for the formation of the tufa at Jiuzhaigou, Sichuan. It is found that, (1) water of Jiuzhaigou is supplied by atmospheric precipitation; (2) the concentrations of HCO3- and Ca2+ in the water of Jiuzhaigou, originated from the dissolution of carbonate rock by soil CO2, are low; (3) according to the source of CO2, the tufa at Jiuzhaigou is meteor gene or supergene; (4) the large fractionation of carbon isotope between modern tufa and DIC at pearl shoal suggests that photosynthesis of algae there played important role in the tufa deposition.
- origin of tufa,
- carbon isotope,
- hydrochemistry,
- soil CO2,
- Jiuzhaigou in Sichuan

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References(35)

References

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Origin of the tufa at Jiuzhaigou scenic spot in Sichuan

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