QE425 : Study of Hydrogeology and geothermometry of hot springs in the Lavich area, Mazandaran province
Thesis > Central Library of Shahrood University > Geosciences > MSc > 2018
Authors:
Abdolghaffar makhdomi [Author], Rahim Bagheri[Supervisor], [Advisor]
Abstarct: The study area is located in Mazandaran province. In order to study the hydrogeology and geothermometry behavior of the area, five hot springs, two cold springs and a permanent river have been sampled for the analysis of hydrochemical, isotopic and heavy mextals characteristics. The EC value of the hot and cold springs ranges from 2400 to 4200 and 562 to 740 µS/cm, respectively. The temperature of the hot and cold springs is between 51 to 70 and 15 and 18 oC, respectively. According to the of hydrochemical results, the dominant water type of hot and cold waters is HCO3-Ca to Cl-Na and HCO3-Ca-Mg, respectively. The existence of salt laxyers in Shemshak Formations in the region can be a major factor in increasing the EC. According to Giggenbach diagrams, all hot water in the area is located in immature waters such that these waters are not in geochemical equilibrium with reservoir rocks. The isotopic results indicate the atmospheric origin of the hot waters. According to the different geothermometers, the initial reservoir temperature is estimated to be 85 to 90oC. The recharging water is penetrated into the depths at high altitudes and flowing upward through the faults. Due to the geological setting and the thickness of the formation of the region, atmospheric cold water cannot flow to the desired depth. Therefore, in order to provide the necessary heat in addition to the performance of the geothermal gradient of the region, the other source of heat should be active below, which according to the Damavand volcanic zone near the area, there is a probable source of the heat flux.
Keywords:
#Hydrogeology #Hydrogeochemical #Isotope and Geothermometry #Lavich #Chamestan Link
Keeping place: Central Library of Shahrood University
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