The Genesis of Rare-Alkali Metal Enrichment in the Geothermal Anomalies Controlled by Faults and Magma along the Northern Yadong-Gulu Rift
The Genesis of Rare-Alkali Metal Enrichment in the Geothermal Anomalies Controlled by Faults and Magma along the Northern Yadong-Gulu Rift
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亚东-古鲁裂谷北部断裂和岩浆控制的地热异常稀有碱金属富集成因
DOI：
10.1016/j.oregeorev.2022.104987
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发表时间：
2022-06
影响因子：
3.3
通讯作者：
Hongbing Tan
中科院分区：
文献类型：
--
作者：
Jinbao Su;Hongbing Tan
• High-temperature springs in the Yadong-Gulu rift are related to the deep circulation of groundwater. • Infiltrating water could reach the middle crust in the case of deep fault activity with high permeability. • Rare-alkali metals contributed from deep magma are enriched along upward pathways of hydrothermal circulation, providing new insight for future exploration. Geothermal water from the hot springs in the Yadong-Gulu rift (YGR) of southern Tibet is extremely enriched in rare-alkali metal (RAM) elements; however, the mechanism of enrichment has long been debated. Much attention has been given to the deep melting magma of the YGR, but no direct evidence indicates whether and how it is connected to the RAM anomaly of hot springs. Determining the mechanism of RAM enrichment and its variations with the time and space of hot springs will contribute to the exploration of the hydrothermal metallogenic systems. This paper presents numerical hydrothermal numerical circulation models constrained by the geological data and the geophysical structure of the YGR. The results illustrate that the depths of boundary faults control the anomalous temperatures of hot springs. High-temperature springs (such as Yangbajing) could be induced by deep faults extending to the middle crust, whereas magma at a depth greater than 10 km has a limited effect on geothermal anomalies. Secondary faults define the extent of hydrothermal circulation and further determine the distribution of thermal anomalies across the rift. We simulate the enrichment and distribution of RAMs from a deep magma source. The pathways of RAMs from the source are consistent with hydrothermal circulation. RAM concentrations are lower in infiltrating groundwater and higher in ascending hot water. In general, deep faults control the hydrothermal circulation of geothermal groundwater. Deep faults and magma further constrain the distribution of RAM anomalies.
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影响因子：
3.4
作者：
Wen-jie Zhang;H. Tan;Yanfei Zhang;Hai-Zhen Wei;Tao Dong
通讯作者：
Wen-jie Zhang;H. Tan;Yanfei Zhang;Hai-Zhen Wei;Tao Dong
影响因子：
56.9
作者：
Chen, LH;Booker, JR;Tan, HD
通讯作者：
Tan, HD
中国西藏羊八井两个地热流体储层混合过程的O、H和Sr同位素证据
影响因子：
2.8
作者：
Yanxin Wang;Wei Liu;Qinghai Guo
通讯作者：
Qinghai Guo
中国西藏南部地热流体中稀有碱金属的起源：硅同位素视角
影响因子：
4.6
作者：
Wang Wei D;Wei Hai-Zhen;Jiang Shao-Yong;Tan Hong-Bing;Eastoe Christopher J.;Williams-Jones Anthony E.;Hohl Simon V.;Wu He-Pin
通讯作者：
Wu He-Pin
影响因子：
2.9
作者：
Zhongjie Zhang;Yun Chen;X. Yuan;Xiaobo Tian;S. Klemperer;T. Xu;Z. Bai;Hongshuang Zhang;
通讯作者：
Zhongjie Zhang;Yun Chen;X. Yuan;Xiaobo Tian;S. Klemperer;T. Xu;Z. Bai;Hongshuang Zhang;