[1]WANG Yun,ZHAO Ciping,LI Qilin,et al.Study on Geochemical Characteristics of Geothermal Fluid in the Wedge-shaped Tectonics,Southeast Yunnan[J].Journal of Seismological Research,2018,41(04):534-543.
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Study on Geochemical Characteristics of Geothermal Fluid in the Wedge-shaped Tectonics,Southeast Yunnan
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
534-543
Column:
Public date:
2018-10-20
- Title:
- Study on Geochemical Characteristics of Geothermal Fluid in the Wedge-shaped Tectonics,Southeast Yunnan
- Keywords:
- geothermal fluid; geochemical characteristics; water-rock interaction; thermal reservoir temperature; Southeast Yunnan
- CLC:
- P314.12
- DOI:
- -
- Abstract:
- In this study,geothermal fluid sampling analysis and geochemical characteristics of four seismic macroscopic-observed sites have been conducted in the wedge-shaped tectonics,Southeast Yunnan. The feature of water chemistry shows that the main ions of four springs have shallow formation characteristics,because they are derived from the leaching of minerals such as calcite,dolomite and gypsum in the host rock strata. Except for the Qujiang Hot Spring,where water-rock interaction reached the partial equilibrium,the remaining three springs did not reach the partial equilibrium. Combination with estimation of silica-enthalpy model,four springs are mixed by surface cold water in some degrees. The Qujiang Hot Springs,Railway Station Hot Spring and Haikou Thermal Spring are the deep-circulation type geothermal system in the light of their circulation depth between 5 km and 10 km. Gas geochemical characteristics show that free gas from the Qujiang Hot Spring is the mixture of atmosphere,organic source and crust-derived,while free gas form the Penzhu spring is mainly the origin of the crustal inorganic metamorphism. Both of the spring gases did not show mantle-derived characteristics.
- References:
- -
- Similar References:
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Last Update:
2018-10-30