|Table of Contents|

Environmental Isotope Distribution and Hydrologic Geologic Sense of Guanzhong Basin Geothermal Water(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2008年第04期
Page:
396-401
Research Field:
水资源与地质工程
Publishing date:

Info

Title:
Environmental Isotope Distribution and Hydrologic Geologic Sense of Guanzhong Basin Geothermal Water
Author(s):
MA Zhi-yuan1; YU Juan1; LI Qing3; WANG Xin-gang 4; LI Feng2;  MU Gen-x u2; HU Yang1; JIA Xu-bing1; LI Wei-liang1
1.School o f Environmental Sciences and Engineering, Changan University, Xian 710054, Shaanxi, China; 2.Geology Investigation Institute o f Shaanxi Province, Xian 710016, Shaanxi, China; 3.Geology Mineral Research Institute o f Xian, Xian 710054, Shaanxi, China; 4.School o f Highway, Changan University, Xian 710064, Shaanxi, China)
Keywords:
Guanzhong basin;  environmental isotope;  geothermal water;  hydrologic geologic significance
PACS:
P641.3
DOI:
-
Abstract:
From the research on the isotopes of 2H、18O、13C、14C、34S in geothermal water in the Guanzhong basin, the different phenomenons and hydrologic geologic significances between Guanzhong basin and its ambient region are described, and supply-circulation and the host environment of the geothermal water in the basin is discussed. The results show that the environmental isotope likeδ(18O)、δ(D)、δ(13C)、δ(14C)、δ(34S)in the geothermal water in Guanzhong basin are rich in its central area but lack in its periphery area in addition toδ(D), which indicate that the host environments of geothermal water of Xianyang and Xi' an are more closed at the depth deep than 1 500 meters. The detained time of geothermal water is long, and the water-rock reaction dominated by dissolution of carbonate minerals is strong. Dissolution of carbonate contributes most to HCO-3,δ(18O) and δ(13C)of geothermal water in geothermal reservoir. Depletion ofδ(D)in the central area of the basin indicates the lower recharge temperature of geothermal water. According to recharge height, geothermal water of Xianyang and Xian maybe come from the snow water of Qinling and Beishan.

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Last Update: 2008-12-20