Research Progress on the Genesis of Da Chaidam Hot Springs and the Enrichment Mechanism of B and Li elements
Studies on the genesis of Da Chaidam hot springs,and its boron and lithium enrichment mechanism is of great significance to reveal the metallogenic regularity of boron-lithium-rich salt lake brine deposits in this area.At the same time,it is benefit to understand the deep hydrological process of similar boron-lithium-rich hot springs in the Qinghai-Xizhang Plateau.This paper reviews the research status of the genesis of Da Chaidam hot springs from the perspective of geothermals,and focuses on the water and heat sources,and heat storage mechanism of Da Chaidam hot springs,as well as the boron-lithium sources and enrichment process.The results show that the water source of Da Chaidam hot springs is mainly meteoric waters.The recharge elevation is about 5 980 m,the temperature of geothermal reservoir is about 194.5℃,and the circulation depth is about 7 630 m,and about 66%of the cold water is mixed during the upwelling process.Supply of magmatic fluids may provide heat for hot springs.Boron and lithium in hot springs may come from high temperature water-rock leaching of granite rocks,magmatic fluids,and dissolution of soluble salt minerals in aeolian sediments.Researches on the geothermal system and the enrichment process of strategic resource elements in the Da Chaidam hot springs are insufficient.Future research works should focus on quantitative evaluation of elemental contributions from different fluids,determination of the geochemical behavior of boron and lithium,and the simulation of water-rock interaction.
GenesisMagmatic fluidBoron and Lithium elementsDa Chaidam hot springs
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NSTL
万方数据
维普
