Characteristics and Genetic Model of the Basin Type Geothermal Water Recourses in Basalt Area of Changbai Mountain
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    Abstract:

    Objectives: Changbai Mountain basalt area is a tectonically and volcanically active area. This region is rich in geothermal water that are different temperature, type and causes. Nowadays, most of the geothermal water are still not developed, and there are many information about the geothermal water is not clear, especially the cause of the basin type geothermal water resources. Therefore, in order to develop, use and protect geothermal water resources, we focus on the characteristics and genetic model of the basin type geothermal water recourses.Methods: Songjianghe and Manjiang geothermal wells were sampled. All samples to be analysed for pH, temperature, EC, major anions (such as carbonate, bicarbonate, chloride and sulphate), cations (such as calcium, magnesium and sodium), metallic elements (such as iron, copper, cadmium and mercury),trace elements (such as silicate, strontium and lithium) were collected in separate polyethylene bottles and hydrogen and oxygen isotope.The pH and EC were measured in situ using a lowrange pH/EC tester. Temperature was measured in situ by thermometer. Majorcations, anions, metallic and trace constituents were determined using the standard analysis methods. The bicarbonate concentration was determined using titration against hydrochloric acid. Sulphate and nitrate concentrations were determined using a spectrophotometer (V1300). Silicate was determined using potassium fluorosilicate. The chloride ion was estimated by titration against a standard solution of AgNO3. Sodium, potassium, calcium and magnesium were determined by flame atomic absorption spectrophotometer (AA6300). Other metallic and trace elements were also determined by flame atomic absorption spectrophotometer (AA6300). δD and δ18O were determined by IRMGC/MS (Agilent 5973). Geophysical method is magnetotelluric (MT) method. Two prospecting lines were placed in Songjianghe basin with the total long of 80 km. And Songjianghe and Manjiang geothermal wells were drilled by geothermal well drilling to get formation lithology and ground temperature data.

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YAN Baizhong, XIAO Changlai, LIANG Xiujuan, JIANG Haiyang.2018. Characteristics and Genetic Model of the Basin Type Geothermal Water Recourses in Basalt Area of Changbai Mountain[J]. Geological Review,64(5):1201-1216.

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History
  • Received:October 17,2017
  • Revised:May 05,2018
  • Adopted:
  • Online: September 14,2018
  • Published: