Hydrogeology and Hydrodynamics of North-Paramushir Geothermal Area (Kuril Islands)

Abstract

We have studied the macrocomponent composition of natural waters and reconstructed the hydrochemical zoning and dynamics of the surface and underground waters within the North-Paramushir hydrothermal-magmatic system. We have studies the areas of feeding and discharge of pressure waters of the upper water-bearing horizonts and complexes restricted to the isometric geological blocks 1.5-2 to 3.5-5 km across and to the ruptured tectonic structures of local and regional types. It is shown that in the Paramushir Island northern part all water types characteristics of the hydrothermal systems, related with the island-arc andesite volcanoes, are present. The composition of hydrotherms and gases is of a great meaning for the formation of deep-level flow structure and the evolution of hydrothermal and magmatic processes in the interior of North-Paramushir geothermal area. The availability of a great of carbon dioxide, hydrogen and other gases creates conditions for a high dynamics of physical-chemical and structure-forming processes.