Geochemistry of thermal springs at Baransky volcano, Southern Kuriles (Russia)

摘要

Four types of springs occur on the southwestern slope of Baransky volcano: solfataras, blue lakes, thermal springs and mud boilers. Different matter sources, feeding these springs, divide them into three genetic groups: hydrothermal fluid, volcanic gas and mature waters. This paper presents new data on geochemistry, hydrochemistry and ecological consequences of Baransky volcano activity including its influence on the environment. Based on tectonics and hydrogeological conditions of drainage at the volcano, we pointed out main parameters that could be influenced by the activation of seismogenesis. A new approach to calculate the influence of volcanic waters on surrounding rivers was used. Calculated values of hydrothermal weathering of rocks show the possibility of industrial usage of acid creek water as a deposit of some strategic metals. Rare earth elements study gives an understanding of the processes occurring inside the volcanic structure and opens new horizons for predicting future seismic activity.