Hydrochemical and Isotopic Characteristics of Ruidian Geothermal Field in Yunnan, China
- 30 June 2020
- journal article
- research article
- Published by International Information and Engineering Technology Association in International Journal of Heat and Technology
- Vol. 38 (2), 533-540
- https://doi.org/10.18280/ijht.380231
Abstract
Ruidian geothermal field is a treasure trove of geothermal resources in Southwest China. This paper probes deep into the hydro-chemical features and isotopic features of geothermal fluids in the geothermal field, and discusses the evolution of the hydrochemical features. The main results are as follows: the geothermal fluids were recharged by the same source, and mixed with cold water through a simple process, that is, the fluids originated from the same high-temperature deep reservoir. The leading hydro-chemical features in Ruidian geothermal field are HCO3 center dot Cl-Na. The Cl- content peaked at 200mg/L, and the delta O-18 drifted positively by 1.5% to 2.5%. The water-rock interaction in the geothermal fluids is not in the equilibrium state. A good portion of the fluids is surface water. To a certain extent, the underground geothermal fluids have an open circulation condition. The hydro-chemical components mainly come from granite dissolution, the alteration of the magma and hydrothermal fluid, and the mixing with groundwater.Keywords
Funding Information
- Natural Science Foundation of Guangxi Province (2018GXNSFAA294046)
- National Basic Research Program of China (973 Program) (2018YFC0604301)
- Geological Survey Project of China (DD20190562)
This publication has 12 references indexed in Scilit:
- Arsenic in geothermal systems of Tengchong, China: Potential contamination on freshwater resourcesInternational Biodeterioration & Biodegradation, 2018
- Fluid geochemistry and geothermometry applications of the Kangding high-temperature geothermal system in eastern HimalayasApplied Geochemistry, 2017
- Signatures of biologically influenced CaCo3 and Mg–Fe silicate precipitation in hot springs: Case study from the Ruidian geothermal area, western Yunnan Province, ChinaSedimentology, 2013
- Geochemical and isotope characterization of geothermal spring waters in Sri Lanka: Evidence for steeper than expected geothermal gradientsJournal of Hydrology, 2013
- Hydrogeochemistry of high-temperature geothermal systems in China: A reviewApplied Geochemistry, 2012
- Geochemistry of hot springs in the Tengchong hydrothermal areas, Southwestern ChinaJournal of Volcanology and Geothermal Research, 2012
- Geochemistry of the Rehai and Ruidian geothermal waters, Yunnan Province, ChinaGeothermics, 2008
- Calcite solubility in Na–Ca–Mg–Cl brinesChemical Geology, 2006
- Isotopic (δ18O, δD) patterns in Los Azufres (Mexico) geothermal fluids related to reservoir exploitationGeothermics, 2005
- Hydrogeochemistry and geothermometry of thermal groundwaters from the Birdsville Track Ridge, Great Artesian Basin, South AustraliaGeothermics, 2004