{"title":"中国云南热海地热系统（岩浆直接相关地热系统）地热水体中微量元素的水地球化学研究","authors":"","doi":"10.1016/j.geothermics.2024.103134","DOIUrl":null,"url":null,"abstract":"<div><p>The researches on the hydrogeochemistry of geothermal waters from magma-indirectly related geothermal systems in Yunnan-Tibet geothermal belt (YTGB) mainly focus on major ions and stable isotopes, but the studies of trace elements are limited and the hydrogeochemistry of trace elements is not yet clear, and whether trace elements can be used to reveal the origin of geothermal water still needs to be studied. Therefore, in this article, trace elements (Li, Cs, Rb, Sb, W, V, Cr, Ba, Sr and Mo) in the geothermal waters in the Rehai geothermal system in Yunnan in China, one of the few geothermal systems with acidic geothermal water, are selected to study the source, evolution and enrichment of trace elements combined with the major ions and δ<sup>2</sup>H and δ<sup>18</sup>O isotopes. The results show that the geothermal waters are divided into four clusters and the trace elements are divided into three groups. Group 1 (Li, Cs, Rb, W, V, Sb and Cr) are of magmatic fluid origin and can be used to indicate whether a geothermal system has a magma heat source. Group 2 (Sr and Mo) mainly originate from the incongruent leaching of host rocks and Group 3 (Ba) mainly originates from the mixing with shallow groundwater and the incongruent leaching of host rocks. The hydrogeochemical processes controlling the concentrations of trace elements of each group are discussed, and on this basis, the origin, evolution and enrichment of the trace elements of each cluster are determined. Li, Cs, Rb, Sb, W, V and Cr have the potential the potential to indicate the heat source properties of hydrothermal geothermal systems, but Ba, Sr and Mo do not. Finally, the origin, and evolution model of these trace elements in the RH geothermal waters are established. The research is helpful in understanding the migration and transformation of mass in deep circulation of geothermal water, the characteristics of magmatic water, hydrothermal mineralization, and the comprehensive utilization and development of geothermal resources in similar regions.</p></div>","PeriodicalId":55095,"journal":{"name":"Geothermics","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hydrogeochemistry of trace elements in geothermal waters from the Rehai geothermal system in Yunnan of China, a magma-indirectly related geothermal system\",\"authors\":\"\",\"doi\":\"10.1016/j.geothermics.2024.103134\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The researches on the hydrogeochemistry of geothermal waters from magma-indirectly related geothermal systems in Yunnan-Tibet geothermal belt (YTGB) mainly focus on major ions and stable isotopes, but the studies of trace elements are limited and the hydrogeochemistry of trace elements is not yet clear, and whether trace elements can be used to reveal the origin of geothermal water still needs to be studied. Therefore, in this article, trace elements (Li, Cs, Rb, Sb, W, V, Cr, Ba, Sr and Mo) in the geothermal waters in the Rehai geothermal system in Yunnan in China, one of the few geothermal systems with acidic geothermal water, are selected to study the source, evolution and enrichment of trace elements combined with the major ions and δ<sup>2</sup>H and δ<sup>18</sup>O isotopes. The results show that the geothermal waters are divided into four clusters and the trace elements are divided into three groups. Group 1 (Li, Cs, Rb, W, V, Sb and Cr) are of magmatic fluid origin and can be used to indicate whether a geothermal system has a magma heat source. Group 2 (Sr and Mo) mainly originate from the incongruent leaching of host rocks and Group 3 (Ba) mainly originates from the mixing with shallow groundwater and the incongruent leaching of host rocks. The hydrogeochemical processes controlling the concentrations of trace elements of each group are discussed, and on this basis, the origin, evolution and enrichment of the trace elements of each cluster are determined. Li, Cs, Rb, Sb, W, V and Cr have the potential the potential to indicate the heat source properties of hydrothermal geothermal systems, but Ba, Sr and Mo do not. Finally, the origin, and evolution model of these trace elements in the RH geothermal waters are established. The research is helpful in understanding the migration and transformation of mass in deep circulation of geothermal water, the characteristics of magmatic water, hydrothermal mineralization, and the comprehensive utilization and development of geothermal resources in similar regions.</p></div>\",\"PeriodicalId\":55095,\"journal\":{\"name\":\"Geothermics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-08-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geothermics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0375650524002207\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geothermics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375650524002207","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Hydrogeochemistry of trace elements in geothermal waters from the Rehai geothermal system in Yunnan of China, a magma-indirectly related geothermal system
The researches on the hydrogeochemistry of geothermal waters from magma-indirectly related geothermal systems in Yunnan-Tibet geothermal belt (YTGB) mainly focus on major ions and stable isotopes, but the studies of trace elements are limited and the hydrogeochemistry of trace elements is not yet clear, and whether trace elements can be used to reveal the origin of geothermal water still needs to be studied. Therefore, in this article, trace elements (Li, Cs, Rb, Sb, W, V, Cr, Ba, Sr and Mo) in the geothermal waters in the Rehai geothermal system in Yunnan in China, one of the few geothermal systems with acidic geothermal water, are selected to study the source, evolution and enrichment of trace elements combined with the major ions and δ2H and δ18O isotopes. The results show that the geothermal waters are divided into four clusters and the trace elements are divided into three groups. Group 1 (Li, Cs, Rb, W, V, Sb and Cr) are of magmatic fluid origin and can be used to indicate whether a geothermal system has a magma heat source. Group 2 (Sr and Mo) mainly originate from the incongruent leaching of host rocks and Group 3 (Ba) mainly originates from the mixing with shallow groundwater and the incongruent leaching of host rocks. The hydrogeochemical processes controlling the concentrations of trace elements of each group are discussed, and on this basis, the origin, evolution and enrichment of the trace elements of each cluster are determined. Li, Cs, Rb, Sb, W, V and Cr have the potential the potential to indicate the heat source properties of hydrothermal geothermal systems, but Ba, Sr and Mo do not. Finally, the origin, and evolution model of these trace elements in the RH geothermal waters are established. The research is helpful in understanding the migration and transformation of mass in deep circulation of geothermal water, the characteristics of magmatic water, hydrothermal mineralization, and the comprehensive utilization and development of geothermal resources in similar regions.
期刊介绍：
Geothermics is an international journal devoted to the research and development of geothermal energy. The International Board of Editors of Geothermics, which comprises specialists in the various aspects of geothermal resources, exploration and development, guarantees the balanced, comprehensive view of scientific and technological developments in this promising energy field.
It promulgates the state of the art and science of geothermal energy, its exploration and exploitation through a regular exchange of information from all parts of the world. The journal publishes articles dealing with the theory, exploration techniques and all aspects of the utilization of geothermal resources. Geothermics serves as the scientific house, or exchange medium, through which the growing community of geothermal specialists can provide and receive information.
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