罗溪温泉水文地球化学特征及热水来源
投稿时间:2017-11-25  修订日期:2018-11-07  点此下载全文
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作者单位E-mail
李鹭 东华理工大学 核资源与环境省部共建国家重点实验室培育基地 1101517743@qq.com 
孙占学 东华理工大学 核资源与环境省部共建国家重点实验室培育基地 sunzhanxue@aliyun.com 
陈功新 东华理工大学 核资源与环境省部共建国家重点实验室培育基地  
张智超 湖南省核工业地质调查院  
基金项目:国家自然科学基金项目:俄罗斯环贝加尔湖地区和中国东南部江西省含氮热水地球化学项目(编号:4141101062),国家自然科学基金项目:基于铀矿石生物堆浸过程的溶质迁移-矿物变化特征研究(编号:41662015)。
中文摘要:本文选取江西省罗溪温泉为研究对象,综合应用地质、水化学和同位素等手段,对其水化学特征及来源进行系统研究,为热水的可持续开发利用提供了科学依据。研究表明:温泉为HCO3?CO3-Na型热水,可作为含F和H2S的医疗热矿水进行开发,但不宜作为灌溉用水使用。通过分析温泉的D、18O及87Sr/86Sr同位素资料,可知热水的补给来源为温泉东西方向海拔约950m的山区的大气降水,降水与地壳中岩石相互作用形成温泉。利用Person法修正热水的14C年龄约为19800a。通过计算推测热储温度约为82℃,循环深度为1900m左右。温泉为花岗岩中地下水获得大气降水补给入渗后,经深循环加热上升出露而成。
中文关键词:温泉  水化学  水源  同位素
 
Hydrogeochemical Characteristics and Sources of the Luoxi Hot Spring
Abstract:The Luoxi hot spring in Jiangxi Province is selected to be study area. The water chemistry characteristics and sources of the hot spring were studied by means of comprehensive application of geology, water chemistry and isotopes,which provided a scientific basis for the sustainable development and utilization of hot springs. The results show that the hot water is of HCO3?CO3-Na type. The hot spring can be used as a kind of medical hot mineral water that containing F and H2S, but it should not be used as irrigation water. Isotopic compositions of hydrogen, oxygen and strontium indicate that the hot water is of meteoric origin,the supply area is a mountain area around 950m in the direction of the East and west parts of the hot spring. The geothermal water was formed by Water-rock interactions. The corrected 14C age using Person method is about 19800 years. The temperature of the geothermal reservoir is about 82℃,and the circulation depth of the hot water is estimated as 1900m. The hot spring was formed by deep circulation of precipitation through the granite and heated by geoheat from the depth.
keywords:hot spring  hydrochemistry  recharge  isotope
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