| 西藏日多温泉水化学特征及其物质来源 |
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| 引用本文： | 李明礼,多 吉,王 祝,邬国栋,姜贞贞,刘高令.西藏日多温泉水化学特征及其物质来源[J].中国岩溶,2015,34(3):209-216. |
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| 作者姓名： | 李明礼 多 吉 王 祝 邬国栋 姜贞贞 刘高令 |
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| 作者单位： | 1.成都理工大学地球科学学院/国土资源部拉萨矿产资源监督检测中心 |
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| 基金项目： | 国土资源部公益性行业科研专项资金（201211035）资助 |
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| 摘 要： | 热泉水的水化学特征包含其形成过程中地质、构造、断裂、蚀变以及环境变化等多种信息，是研究地热流体形成和物质来源最基本和最重要的特征之一。西藏日多温泉发育于古新统典中组（E1d）和下白垩统林布宗组（K1l）地层。水化学特征显示:日多温泉地下热储温度为97.5 ℃~110.1 ℃之间，pH值为中性，水化学类型为SO4·HCO3-Na型，阳离子以Na+、Ca2+、K+为主，阴离子以Cl-、SO42-、HCO3-为主，并富含HBO2、H2SiO3、F、Li、Sr、Cs、As，矿化度介于1 162 mg/L～1 245 mg/L之间，符合理（医）疗热矿泉水水质标准。温泉水富含多种矿物组分的特征，与温泉水循环深度大、地下滞留时间较长（推测大于48 a）、地下热水与火山岩水-岩作用强烈有直接关系。综合研究热矿水的水化学特征，有助于更好地认识热泉水的形成过程，为热泉资源的开发利用和保护提供科学依据。
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| 关 键 词： | 日多温泉 水化学 理（医）疗热矿泉水 西藏 |
Hydrochemical characteristics and material sources of the Riduo thermal spring in Tibet |
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| LI Ming-li,DUO Ji,WANG Zhu,WU Guo-dong,JIANG Zhen-zhen and LIU Gao-ling.Hydrochemical characteristics and material sources of the Riduo thermal spring in Tibet[J].Carsologica Sinica,2015,34(3):209-216. |
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| Authors: | LI Ming-li DUO Ji WANG Zhu WU Guo-dong JIANG Zhen-zhen and LIU Gao-ling |
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| Institution: | 1.College of Earth Sciences，Chengdu University of Techenology/Lhasa Mineral Resources Supervise Test Centre，Ministry of Land and Resources2.College of Earth Sciences，Chengdu University of Techenology/Department of Land and Resources of Tibet Autonomous Region3.Lhasa Mineral Resources Supervise Test Centre，Ministry of Land and Resources |
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| Abstract: | Hydrochemical characteristics of hot springs include geological, tectonic, fractured, alteration and hydro-environmental change information during the spring’s formation. So hot spring’s hydrochemistry analyze is the most important and basic method for hot spring formation and material source research. The Riduo spring is located in Riduo, Lhasa, Tibet. It occurs in Palaeocene Dianzhong Formation (E1d) and Lower Cretaceous Linbuzong Formation (K1l). The hydrochemical characteristics show the spring is neutral water with SO4·HCO3-Na. Its temperature is about 97.5-110.1 ℃. The positive ions are mainly Na+, Ca2+, and K+, while the negative ones are Cl-, SO42-, and HCO3-.The degree of mineralization is about 1 162-1 245 mg/L, with abundant of HBO2, H2SiO3, F, Li, Sr, Cs, and As, meeting the standard of physiotherapy (medical) hot spring quality. The characteristics are directly related to the deep water cycle, long-term underground residence (presumably greater than 48a) and intense water-rock interaction between the hot water and volcanic rock. Comprehensive study of hot spring’s hydrochemistry help to reveal the hot spring’s formation, and benefit the recourse rational use and protection. |
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