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[1]欧晓斌,鲍志诚,吕 坚,等.全南—寻乌断裂带温泉水文地球化学特征[J].地震研究,2023,46(04):529-541.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0062 ]
　OU Xiaobin,BAO Zhicheng,LYU Jian,et al.Hydrogeochemical Characteristics of the Hot Springs in the Quannan-Xunwu Fault Zone[J].Journal of Seismological Research,2023,46(04):529-541.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0062 ]
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全南—寻乌断裂带温泉水文地球化学特征(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
46
期数:
2023年04期
页码:
529-541
栏目:
出版日期:
2023-07-15

文章信息/Info

Title:
Hydrogeochemical Characteristics of the Hot Springs in the Quannan-Xunwu Fault Zone
作者:
欧晓斌1; 2; 鲍志诚1; 2; 吕 坚1; 2; 肖 健1; 2; 赵 影1; 2; 陈 浩1; 2
(1.江西省地震局,江西 南昌 330026; 2.江西九江扬子块体东部地球动力学野外科学观测研究站,江西 九江 332006)
Author(s):
OU Xiaobin1; 2; BAO Zhicheng1; 2; LYU Jian1; 2; XIAO Jian1; 2; ZHAO Ying1; 2; CHEN Hao1; 2
(1.Jiangxi Earthquake Agency,Nanchang 330026,Jiangxi,China)(2.Observatory for Geodynamic of the East Yangtze Block in Jiujiang,Jiangxi Province,Jiujiang 332006,Jiangxi,China)
关键词:
温泉;  水化学组分;  氢氧同位素;  全南—寻乌断裂带
Keywords:
hot spring;  chemical composition of water;  hydrogen and oxygen isotope;  the Quannan-Xunwu fault zone
分类号:
P315.724
DOI:
10.20015/j.cnki.ISSN1000-0666.2023.0062
摘要:
对全南—寻乌断裂带上5个温泉点进行野外调查和取样分析,对采集的水样进行常量组分、微量元素和氢氧同位素的测试,得到该区断裂带上温泉的水文地球化学特征及其成因。结果表明:①全南—寻乌断裂带温泉水温为42 ℃～72 ℃,属中高温温泉; 分为HCO3-Na型水和HCO3-Na-Ca型水,以HCO3-Na型为主; 富集Na、Li、Sr等主微量组分,主要是由于地下热水在循环过程中与周边的燕山期中酸性侵入岩发生了水-岩相互作用导致。② δD和δ18O测值分别为-40.38‰～-44.50‰和-6.42‰～-6.95‰,分布在大气降水线左侧附近,指示热水主要源自大气降水,并且部分温泉与其中的CO2气体发生了水-气相互作用。③温泉主要是由大气降水沿全南—寻乌断裂带深入地壳深部,经过深循环加热后,在有利的断裂通道上涌至地表而形成,温泉的空间分布和水文地球化学特征与该区的地震活动有着较好的对应关系。
Abstract:
Through field investigation and sampling of the water in five hot springs in the Quannan-Xunwu fault zone,the major components,trace elements,and hydrogen and oxygen isotopes of the collected water samples are tested to find out the hydrogeochemical characteristics of the water in these five hot springs and its cause in this area.The results show that:① The temperature range of the hot springs in the Quannan-Xunwu fault zone is 42 ℃ -72 ℃; these springs belong to medium-high temperature hot springs; the water in the hot springs belong to the HCO3-Na type and the HCO3-Na-Ca type,and the HCO3-Na type water is the major part.The hot springs are rich in Na,Li,and Sr,due to the water-rock reaction between the underground hot water and the surrounding Yanshanian intermediate-acid intrusive rocks during the circulation process.② The range of δ18O isotope values is -40.38‰～-44.50 ‰,and the range of δD isotope values is -6.42‰～-6.95 ‰.These values are near the left side of the atmospheric precipitation line,indicating that the hot springs' water replenishment mainly comes from atmospheric precipitation,and some hot springs have water-gas interaction with CO2 gas therein.③ In the Quannan-Xunwu fault zone,the atmospheric precipitation flows into the deep crust along the Quannan-Xunwu fault zone,then,after cycle heating in the deep,the water flows back onto the earth's surface through the fracture channel and supplies the hot springs.In the Quannan-Xunwu fault zone,the spatial distribution and the hydrological characteristics of the hot springs have a good relationship with the earthquake activity.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2022-09-16.
基金项目:江西九江扬子块体东部地球动力学野外科学观测研究站开发基金(OGYB202203,SDGD202215); 中国地震局地震科技星火计划项目(XH20032).
第一作者简介:欧晓斌(1996-),助理工程师,主要从事地震流体地球化学研究.E-mail:ouxiaobin521@163.com.
通讯作者简介:鲍志诚(1985-),工程师,主要从事地震地下流体及流体地球化学研究.E-mail:bzc299@126.com.
更新日期/Last Update: 2023-10-01