Home > Archive > No. 3-4 (172-173) 2017 > 76-86
Geology & Geochemistry of Combustible Minerals No. 3-4 (172-173) 2017, 76-86.
Halyna MEDVID, Maria KOST’, Olga TELEHUZ, Roman PANKIV, Olena PALCHYKOVA, Orysya MAJKUT, Iryna SAKHNYUK
Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, e-mail: igggk@mail.lviv.ua
Abstract
Macro- and microcomponent chemical composition of reservoir waters of the Cambrian, Devonian, Carboniferous aquifer complex of the Velyki Mosty gas field and surface water of the Upper Cretaceous sediments are studied. Changes of basic genetic parameters of the ground water with the depth and in the space are analyzed, hydrogeochemical conditions of their origin are found and the coefficient of the hydrogeological closing of bowels is calculated .
Formation waters of the Cambrian and Devonian complex have high salinity, low sulfurity and chlorine-bromine factor and belong to the chloride-calcium type with high degree of the metamorphism. Groundwater of the Carboniferous period is characterized by lower salinity, high sulfurity and hydrocarbonate-sodium type. It was found that Cambrian and Devonian aquifers are zones of delayed water exchange according the coefficient of closing of structures and Carboniferous aquifer is a zone of considerable water exchange.
Surface water of the Upper Cretaceous sediments are unleavened, slightly alkaline with hydrocarbonate calcium composition. High values permanganate oxidizability in the waters of the river indicate the impact of the technogenesis. Hydrocarbonate calcium composition of drinking water from Senon-Turonian horizon of the Upper Cretaceous indicates no impact of deep water.
Keywords
hydrogeology, ecology, Velyki Mosty gas field, aquifer complex, coefficient of closing of structures, groundwater and surface water.
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