Hydrochemical characteristics of geothermal waters in Xianyang, China
Xianyang City, located about twenty kilometers to the north of Xian, the capital city of Shannxi,China, is rich in geothermal resources. Geothermal resources are characterized by relative high temperature,high hydraulic pressure, and high quality. Our hydrochemical study shows that: (1) Geothermal anomaly is controlled by faults; (2) Na+ is major cation in the thermal waters, order of anions based on their concentration is Cl- ＞ HCO3- ＞ SO42- and, as a result, Na-Cl type accounts for 50％ of sampled thermal waters; (3)Evolution law of hydrochemical characteristics shows a general trend: Na-Cl type of high TDS water mainly distributes near the intersection of fractures; from southern to northern part of the field, with increase of HCO3-and SO42-, water type evolves from Na-Cl type of high TDS to Na-HCO3-SO4 and Na-SO4-HCO3 type of intermediate TDS.
H.Zhao H.Qian Z.Y.Ma
Changan University, Xian, Shaanxi, China
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
115-118
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）