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StableCarbonIsotopeGeochemicalandHydrochemicalFeaturesintheSystemofCarbonate-H2O-CO2andTheirImplications—EvidencefromSeveralTypicalKarstAreasofChina
被引：5
作者：
Liu Zaihua Yuan Daoxian and He Shiyi Institute of Karst Geology Qixing Rd Guilin Guangxi
[40
,541004
]
机构：
关键词：
karst dynamic system;
stable carbon isotope;
geochemistry;
hydrochemistry;
tufa formation;
carbon source;
D O I：
暂无
中图分类号：
P597 [同位素地质学与地质年代学];
学科分类号：
070902 ;
摘要：
<正> On the basis of hydrochemical observation and experimental calculation, the features of stable carbon isotope geochemistry in the karst dynamic systems of the Guilin Karst Experimental Site, Huanglong Ravine and Wujiangdu Dam Site are summarized in this study. Furthermore, an attempt has been made to solve several geochemical problems, such as the origin of CO2 in the system, kinetic fractionation of carbon isotopes during calcite deposition, hydrochemistry and formation of tufa, and carbon-14 dating of tufa of hydrothermal origin. The results show that three kinds of karst dynamic system can be distinguished: (1) the shallow system, such as the Guilin Karst Experimental Site, in which soil CO2 provides the an active agent for karst processes; (2) the geothermal system, such as the Huanglong Ravine, in which metamorphic or/ and juvenile CO, is the source of activity for karst; (3) the anthropogenic system, such as the Wujiangdu Dam Site, in which the stable carbon isotope geochemical and hydrochemical f
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页码：446 / 454
页数：9
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