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摘要:
Hot springs are natural exposed points of the hydrothermal system. The hydrogeochemistry of hot springs can be used to interpret the formation of the hydrothermal system;and the 14C dating can be used to evaluate the renewability of the hydrothermal system. The hot springs exposed from fault zones in western Guangdong are classified as granite fissure water and clastic rock fissure water, which are sampled and tested. The results of water chemistry analysis show that hot spring water is mainly HCO3-Na type in the beginning, while the mixing of seawater leads to the increase of Cl-. Hydrogen and oxygen isotopes indicate that these hot springs mainly come from atmospheric precipitation, and water-rock interactions produce oxygen isotope exchange reactions, where a significant “oxygen drift” phenomenon can be observed. The relationship between δ^13C and HCO3 - indicates that there is a deep source of CO2 “dead carbon” in hot spring water. This systematic error is not considered in the existing 14C dating correction models. The 14C age of the deep source “dead carbon” correction proposed in this paper is close to the 14C age of the reverse chemical simulation correction, the Gonfiantinie model, and the Mook model. The deep source “dead carbon” correction method can improve the systematic error. Therefore, the 14C age corrected by the deep source “dead carbon” may be more representative in terms of the actual age of geothermal water.
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篇名 Hydrogeochemical characteristics of hot springs exposed from fault zones in western Guangdong and their 14C age correction
来源期刊 地下水科学与工程:英文版 学科 工学
关键词 HYDROGEOCHEMISTRY 14C age Deep source “dead carbon” Hot spring WESTERN GUANGDONG
年,卷(期) dxskxygcywb_2019,(1) 所属期刊栏目
研究方向 页码范围 1-14
页数 14页 分类号 TV
字数 语种
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节点文献
HYDROGEOCHEMISTRY
14C
age
Deep
source
“dead
carbon”
Hot
spring
WESTERN
GUANGDONG
研究起点
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研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
地下水科学与工程:英文版
季刊
2305-7068
河北省石家庄市中华北大街268号
出版文献量(篇)
277
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0
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