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Geochemical Characteristics of Hydrothermal Volatiles From Southeast China and Their Implications on the Tectonic Structure Controlling Heat Convection

文献类型：期刊论文

作者Tian, Jiao1,2,4; Li, Yiman2,4; Zhou, Xiaocheng1; Pang, Zhonghe2,4; Li, Liwu3; Xing, Lantian3; Li, Zhongping3
刊名FRONTIERS IN EARTH SCIENCE
出版日期2021-11-30
卷号9页码:13
关键词Southeast China geothermal gas heat-control structure thermal background hot springs
DOI10.3389/feart.2021.786051
英文摘要Hot springs and igneous rocks are present widely in southeast China, influenced by the subduction of the Western Pacific and Philippine Sea Plates. This study reports on new data of chemical compositions and He-Ne-C isotopes for gas samples from representative hot springs and wells in the Guangdong and Fujian provinces to identify the origin of hydrothermal volatiles and provide insight into geothermal tectonic affinities. The primary hydrothermal volatile component from southeast China is atmospheric N2, with a volumetric percentage of 82.19%-98.29%. It indicates medium-low temperature geothermal systems where geothermal fluids suffered a shallow circulation in closed fracture systems. Low CO2 and CH4 contents and their depleted delta 13C values confirmed the small number of deep-derived components in the study area. However, spatially discernible geochemical characteristics imply enhanced hydrothermal fluid convection in the adjacent area of the two provinces, including the Fengshun, Zhangzhou, Longyan, and Sanming geothermal fields. Specifically, the He-Ne isotopes from this area exhibit mantle He contribution of more than 10% and mantle heat flow accounts for more than half of the total heat flow. Moreover, according to the thermal background calculations, the highest heat flow value of 77.7 mW/m(2) is indicated for the Zhangzhou geothermal area and the lowest value of 54.7 mW/m(2) is indicated for the Maoming geothermal area. Given the epicenter distributions and the corresponding earthquake magnitudes, the NE-trending faults are heat-control tectonic structures and their intersections with the NW-trending faults provided expedite channels for geothermal fluids rising to the surface. Therefore, the preferred development potential of geothermal resources can be expected in the adjacent area of the two provinces where two sets of active faults crossed. This study provides critical information on understanding the geothermal distribution controlled by the tectonic structure in southeast China.
WOS关键词TENGCHONG VOLCANIC FIELD ; ISOTOPIC COMPOSITION ; FLUID GEOCHEMISTRY ; GEOTHERMAL SYSTEMS ; GAS GEOCHEMISTRY ; HELIUM-ISOTOPES ; FAULT ZONE ; FLOW ; SUBDUCTION ; ORIGIN
资助项目National Key R&D Program of China[2019YFC0604901] ; National Natural Science Foundation of China[41902252] ; National Natural Science Foundation of China[41673106] ; National Natural Science Foundation of China[42073063] ; National Natural Science Foundation of China[4193000170] ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2018IEF010104] ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2019CSES0104] ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2020IEF0604] ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2020IEF0703] ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2021IEF0602] ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2021IEF0101]
WOS研究方向Geology
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000731678200001
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration
源URL[http://ir.iggcas.ac.cn/handle/132A11/103925]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
地质与地球物理研究所_兰州油气中心
通讯作者Zhou, Xiaocheng
作者单位1.China Earthquake Adm, Inst Earthquake Forecasting, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources Res, Lanzhou, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geol Engn, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Tian, Jiao,Li, Yiman,Zhou, Xiaocheng,et al. Geochemical Characteristics of Hydrothermal Volatiles From Southeast China and Their Implications on the Tectonic Structure Controlling Heat Convection[J]. FRONTIERS IN EARTH SCIENCE,2021,9:13.
APA Tian, Jiao.,Li, Yiman.,Zhou, Xiaocheng.,Pang, Zhonghe.,Li, Liwu.,...&Li, Zhongping.(2021).Geochemical Characteristics of Hydrothermal Volatiles From Southeast China and Their Implications on the Tectonic Structure Controlling Heat Convection.FRONTIERS IN EARTH SCIENCE,9,13.
MLA Tian, Jiao,et al."Geochemical Characteristics of Hydrothermal Volatiles From Southeast China and Their Implications on the Tectonic Structure Controlling Heat Convection".FRONTIERS IN EARTH SCIENCE 9(2021):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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