Hydrochemistry of thermal waters in crystalline rocks of the Sikhote-Alin ridge, Far East of Russia

Autor: Chelnokov George, Bragin Ivan, Kharitonova Natalia
Jazyk: English<br />French
Rok vydání: 2019
Předmět:
Zdroj: E3S Web of Conferences, Vol 98, p 07006 (2019)
Druh dokumentu: article
ISSN: 2267-1242
DOI: 10.1051/e3sconf/20199807006
Popis: Low-enthalpy thermal waters (30-50°C) of HCO3-Na and HCO3-SO4-Na types with nitrogen as a dominant associated gas discharge on the southern continental margin of the Russian Far East and traditionally are of great importance for recreation and balneology facilities. All studied thermal waters have meteoric origin and relate to Palaeocene granite intrusions. Based on the chemical characteristics and isotopic composition, thermal waters are divided onto “immature” thermal waters with a short residence time (3H=1.3±0.2TU), and “mature” thermal waters (3H=0.3±0.2TU) originated as a result of a longer evolution history (more than 60 years). The chemical composition of waters is largely determined by water-rock interactions, residence time and the local geothermal gradient.
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