CHEMIZM WÓD PODZIEMNYCH W DOLNOPERMSKICH SKAŁACH WULKANICZNYCH MASYWU DZIKOWCA I LESISTEJ WIELKIEJ (GÓRY KAMIENNE, SUDETY) W ŚWIETLE WYNIKÓW MODELOWANIA GEOCHEMICZNEGO

Abstract

GROUNDWATER CHEMISTRY OF LOWER PERMIAN VOLCANIC ROCKS IN THE REGION OF DZIKOWIEC AND LESISTA WIELKA MASSIF (THE KAMIENNE MTS., SUDETES) DERIVED FROM GEOCHEMICAL MODELLINGAbstract. The groundwater draining the Lower Permian volcanic rocks in the region of Dzikowiec and Lesista Wielka massif, was the subject of hydrochemical research. The aim of this study was quantitative assessment of processes controlling the chemical composition of groundwater, based on the results of geochemical modelling. Speciation modelling was used to assess stability of mineral phases. Modelling between precipitation and groundwater from springs was performed to define the processes responsible for groundwater chemistry in the weathered zone in trachyandesites and rhyolitic tuffs. Geochemical models found between precipitation and groundwater from rhyolitic tuffs were compared with another model for the same rocks.