摘要
本文依据伊舒盆地南段4眼地热井的水质分析资料,应用Pipar图、Gibbs图、Na-K-Mg三角图、氢氧同位素关系图等方法,对区内地热流体水化学组成、成因类型、水岩平衡、补给来源及循环特征进行了综合研究,得出区内地热流体赋存环境相对密闭,循环时间较长,水岩作用较为强烈,反应环境以碱性环境为主,水化学类型为重碳酸钠型。并根据氢氧同位素数据,计算地热流体大气降水补给区高程为1004.85 m,推断大气降水补给区位于盆地东部老爷岭山脉至哈达岭山脉一带。同时追溯了地热流体的起源和运移特征,为今后地热资源探矿权、采矿权合理设置和科学开发提供了参考。
Based on the water quality analysis data of four geothermal wells in the southern section of Yishu Basin,the authors comprehensively studied the hydrochemical composition,genetic type,water-rock balance,recharge source and circulation characteristics of geothermal fluids in the area by using Pipar diagram,Gibbs diagram,Na-K-Mg triangle diagram,hydrogen and oxygen isotope relationship diagram and other methods.It is concluded that the occurrence environment of geothermal fluid in the area is relatively closed,the cycle time is long,the water-rock interaction is relatively strong,the reaction environment is mainly alkaline environment,and the hydrochemical type is sodium bicarbonate.According to the hydrogen and oxygen isotope data,the elevation of the atmospheric precipitation recharge area of geothermal fluid is calculated to be 1004.85 m,and it is inferred that the atmospheric precipitation recharge area is located in the area from Laoyeling Mountain Range to Hadaling Mountain Range in the eastern part of the basin.At the same time,the origin and migration characteristics of geothermal fluids are traced,which provides a reference for the rational setting and scientific development of prospecting rights and mining rights of geothermal resources in the future.
作者
李文俊
刘聪
张丽玲
朱彤
宋文玲
LI Wenjun;LIU Cong;ZHANG Liling;ZHU Tong;SONG Wenling(Institute of Exploration and Development for Geological and Mineral Resources of Jilin Province,Changchun 130102,Jilin,China;Institute of Geological Survey of Jilin Province,Changchun 130102,Jilin,China)
出处
《吉林地质》
2022年第4期66-71,共6页
Jilin Geology
基金
吉林省地质勘查基金项目(2009-4、2016续-5)。
关键词
地热流体
水化学特征
水岩平衡
伊舒盆地
Geothermal fluid
hydrochemical characteristics
water-rock balance
Yishu Basin
