河南平原区天然地热流体同位素特征对其成生环境的揭示  

Isotopic Characteristics and Forming Environment of Natural Geothermal Fluids in the Plain Area of Henan Province

作　　者：龚晓洁[1,2,3] 田良河 袁锡泰[4] GONG Xiao-jie;TIAN Liang-he;YUAN Xi-tai(Henan Institute of Geological Survey,Zhengzhou 450001,China;Underground Clean Energy Exploration & Development Technology Innovation Strategic Alliance,Zhengzhou 450001,China;Henan Urban Geological Engineering Research Center,Zhengzhou 450001,China;No.1 Institute of Geo-Environment Survey of Henan,Zheng Zhou 450045,China)

机构地区：[1]河南省地质调查院,郑州450001 [2]地下清洁能源勘查开发技术创新战略联盟,郑州450001 [3]河南省城市地质工程技术研究中心,郑州450001 [4]河南省地质矿产勘查开发局第一地质环境调查院,河南郑州450045

出　　处：《科学技术与工程》2019年第25期33-37,共5页Science Technology and Engineering

基　　金：中国地质科学院项目(12120113077300)资助

摘　　要：河南省东部平原地区蕴藏着丰富的地热资源,不同构造单元、不同时代的天然地热流体,其水化学特征及成生环境有较大差异。本次采用稳定同位素数据研究地热流体来源、迁移特征;采用放射性同位素数据,研究地热流体年龄。结果表明:①河南平原区地热流体主要源于大气降水且多为滞留古水;②不同时代热储之间水力联系微弱;③同时代热储赋存的地热流体年龄,山前区远小于平原区,揭示其由山前向平原迁移。The geothermal resource is abundant in the eastern plain of Henan province. The hydrochemical characteristics and forming environment of natural geothermal fluids is greatly different in different tectonic units and in different geological period. The stable isotope data is applied to study the source and migration characteristics of geothermal fluids. The radioisotope data of 14 C is used to identify the age of geothermal fluids. The results show as follows. Firstly,the source of the geothermal fluids in plain area of Henan province is mainly atmospheric precipitation and the geothermal fluids are mainly ancient water. Secondly,the hydraulic connection between thermal reservoirs of different ages is weak. Thirdly,the age of contemporary geothermal fluids in front of mountains is far less than that in the plain area. The results revealed that the geothermal fluids are migrating from the front of mountains to the plain areas.

关 键 词：河南平原区 地热流体 同位素 氘过量参数 成生环境 年龄 

分 类 号：P341.1[天文地球—水文科学] P641.1[天文地球—地球物理学]