中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Hydrogeochemistry and groundwater circulation in the Xi'an geothermal field, China

文献类型:期刊论文

作者Qin, DJ; Turner, JV; Pang, ZH
刊名GEOTHERMICS
出版日期2005-08-01
卷号34期号:4页码:471-494
关键词Hydrogeochemistry Isotopes Oxygen Shift Geothermal Water Groundwater Circulation Xi'an China
ISSN号0375-6505
DOI10.1016/j.geothermics.2005.06.004
文献子类Article
英文摘要Geothermal waters from the Tertiary aquifers located at 1000-3000 m beneath Xi'an city, Shaanxi Province, China, show unique isotopic composition as compared to local groundwaters from shallower Quaternary aquifers. Positive oxygen shifts of as much as 8 parts per thousand VSMOW are observed, while the corresponding 82 H values remain essentially constant at about -80 parts per thousand VSMOW, which is significantly different from those of waters in the Quaternary aquifers with a mean 62 H value of -60 parts per thousand VSMOW. The strong O-18 shift is a result of isotope exchange between geothermal water and carbonate minerals such as calcite over a residence time of several thousand years up to 30,000 years, based on C-14 dating. A comparison of the isotopic composition of geothermal waters with neighbouring groundwater units on both sides of the Guanzhong Basin indicates that the geothermal reservoirs are recharged by rain that falls on the northern slope of the Qinling Mountains, south of the Xi'an geothermal field, but not from the North Mountains to the north of the field. Based on chemical geothermometers the highest temperature estimated for the Tertiary aquifers of the Xi'an area is around 130 degrees C. (c) 2005 CNR. Published by Elsevier Ltd. All rights reserved.
WOS关键词OXYGEN ISOTOPE FRACTIONATION ; MINERAL-FLUID SYSTEMS ; CHEMICAL-EQUILIBRIA ; WATERS ; QUARTZ ; GEOTHERMOMETERS ; EXCHANGE
WOS研究方向Energy & Fuels ; Geology
语种英语
WOS记录号WOS:000231303700005
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.iggcas.ac.cn/handle/132A11/65186]  
专题中国科学院地质与地球物理研究所
通讯作者Qin, DJ
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.IAEA, Isotope Hydrol Sect, A-1400 Vienna, Austria
推荐引用方式
GB/T 7714
Qin, DJ,Turner, JV,Pang, ZH. Hydrogeochemistry and groundwater circulation in the Xi'an geothermal field, China[J]. GEOTHERMICS,2005,34(4):471-494.
APA Qin, DJ,Turner, JV,&Pang, ZH.(2005).Hydrogeochemistry and groundwater circulation in the Xi'an geothermal field, China.GEOTHERMICS,34(4),471-494.
MLA Qin, DJ,et al."Hydrogeochemistry and groundwater circulation in the Xi'an geothermal field, China".GEOTHERMICS 34.4(2005):471-494.

入库方式: OAI收割

来源:地质与地球物理研究所

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