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GEOCHEMICAL CHARACTERISTIC OF RIVER AND GROUND WATERS (OUTER ZONE OF THE PRECARPATHIAN DEEP)

Home > Archive > No. 1 (182) 2020 > 76-86


Geology & Geochemistry of Combustible Minerals No. 1 (182) 2020, 76-86.

цифровий ідентифікатор DOI цієї статті

Maria KOST’, Halyna MEDVID, Vasyl HARASYMCHUK,Olga TELEGUZ, Iryna SAKHNYUK, Orysia MAYKUT

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, e-mail: igggk@mail.lviv.ua

Abstract

Geochemical peculiarities of river and groundwaters of the Outer zone of the Precarpathian deep have been established. It is revealed that the main feature of the distribution of salt composition indicators in the Dniester River and its influxes is hydrochemical zonality, which does not depend on the flow direction of the rivers, but is consistent with the physics-geographical and geological features of the area to which the man-made factor is imposed.

There is an increase in concentrations of sulfate, calcium in the left bank confluent of the river Shchyrka. The waters from the Tysmenytsya, Kolodnitsa and Dniester rivers in the village Kolodrubi are characterized by the highest amounts of sodium and chlorides and are sodium chloride-hydrocarbonate composition. The water composition of the Dniester River (Rozvadiv village), its confluents Bystrytsia and Letnyanka are hydrocarbonate calcium (sodium-magnesium-calcium), Shchyrka, Vereshchitsa – sulfate-hydrocarbonate calcium (magnesium-calcium). The index of biochemical oxygen consumption for 5 days in the waters of Tysmenytsya River reached 4.5 mg O2/dm3, while in other rivers it was 0.70‒3.20 mg O2/dm3. The content of O2 soluble in the waters of the river Vereshchytsya was 0.29 mg/dm3, the value of biochemical oxygen consumption was 11.4 mg O2/dm3.

In the chemical composition of river waters, there is an increase in the concentrations of sodium, potassium and chloride ions from the left bank to the right bank confluents of the Dniester. In the left-bank confluents, in the chemical composition of water dominate the contents of calcium and hydrocarbons ions.

The heterogeneity of the lithological composition, the instability of the thickness of the aquifer both in the horizontal and vertical directions, and the different technogenic influence form the irregularity of pollution and its local distribution in groundwater.

Keywords

river waters, groundwaters, geochemical features, geochemical zonality, Outer zone, Precarpathian deep.

REFERENCES

Babiienko, V. V., Levkovska, V. Yu., & Hanykina, S. O. (2017). Hihiienichna otsinka dzherel zabrudnennia richky Dnister [Hygienic evaluation of sources of pollution of the river Dniester]. Odeskyi medychnyi zhurnal, 4, 64–67. [in Ukrainian]

Herenchuk, K. I. (Red.). (1972). Pryroda Lvivskoi oblasti [Nature of Lviv region]. Lviv: Vyshcha shkola. Vydavnytstvo Lvivskoho universytetu. [in Ukrainian]

Hihiienichni vymohy do vody pytnoi, pryznachenoi dlia spozhyvannia liudynoiu [Hygienic requirements for drinking water intended for human habitation]. (2010). DSanPiN 2.2.4-171-10. Nakaz Ministerstva okhorony zdorovia Ukrainy N 400 vid 2010-05-12. Kyiv. [in Ukrainian]

Ivaniuta, M. M. (red.). (1998). Atlas rodovyshch nafty i hazu Ukrainy. T. 4. Zakhidnyi naftohazonosnyi rehion [Atlas of Oil and Gas Fields of Ukraine. Vol. 4. Western Oil-and-Gas-Bearing Region]. Lviv: Tsentr Yevropy. [in Ukrainian]

Lototska, O. V. (2019). Hihiienichni problemy okhorony poverkhnevykh i pidzemnykh vod vid antropotekhnohennoho zabrudnennia ta yikh vykorystannia v pytnomu vodopostachanni v Zakhidnomu rehioni Ukrainy [Hygienic problems of protection of surface and underground waters from anthropotechnogenic pollution and their use in drinking water supply in the western region of Ukraine]. (Extended abstract of Doctor’s thesis, National Academy of Medical Sciences of Ukraine, State Institution “O. M. Marzieiev Institute for Public Health NAMSU”). Kyiv. [in Ukrainian]

Pankiv, R., Kost, M., Harasymchuk, V., Maikut, O., Mandzia, O., Sakhniuk, I., Kozak, R., & Palchykova, O. (2015). Heokhimichni osoblyvosti poverkhnevykh vod baseinu richky Dnister u mezhakh Ukrainy [Geochemical features of surface waters of the river Dniester basin within Ukraine]. Heolohiia i heokhimiia horiuchykh kopalyn, 1–2 (166–167), 135–144. [in Ukrainian]

Perechen’ rybokhozyaistvennykh normativov: predel’no-dopustimykh kontsentratsii (PDK) i orientirovochno bezopasnykh urovnei veshchestv (OBUV) dlya vody vodnykh ob”ektov, imeyushchikh rybokhozyaistvennoe znachenie [List of fishery standards: maximum permissible concentrations (MPC) and tentatively safe levels of substances (TSEL) for water in water bodies of fishery importance]. (1999). Moskva: Izdatel’stvo VNIRO. [in Russian]

Rehionalna dopovid pro stan navkolyshnoho pryrodnoho seredovyshcha u Lvivskii oblasti v 2018 rotsi [Regional report on the state of the environment in the Lviv region in 2018]. (2019). Lviv. https://drive.google.com/file/d/1Q7lX0uKWoTbv5rsga5PnSRs l7Tff6qc0/view [in Ukrainian]

Shtohryn, O. D., & Havrylenko, K. S. (1968). Pidzemni vody zakhidnykh oblastei Ukrainy [Groundwater of the western regions of Ukraine]. Kyiv: Naukova dumka. [in Ukrainian]

Zharkykh, M. I. (Red.). (1998). Doslidzhennia Dnistra: 10 rokiv hromadskoi ekolohichnoi ekspedytsii “Dnister” [Dniester research: 10 years of the public ecological expedition “Dniester”]. Lviv; Kyiv. [in Ukrainian]

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GEOLOGICAL-GEOCHEMICAL FEATURES OF MIGRATION AND FORMATION OF GAS FIELDS IN OIL- AND GAS-BEARING REGIONS OF UKRAINE

Home > Archive > No. 1 (178) 2019 > 21-40


Geology & Geochemistry of Combustible Minerals No. 1 (178) 2019, 21-40.

цифровий ідентифікатор DOI цієї статті

Olesya SAVCHAK

Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv,
e-mail: igggk@mail.lviv.ua

Abstract

Geochemical composition of main components of natural gas has been analysed for three oil- and gas-bearing regions of the Ukraine, namely: Western (40 fields of the Precarpathian deep, 4 gas fields of the Transcarpathian deep and 2 gas fields located within the limits of the Lviv Paleozoic deep), Eastern (composition of natural gases at 12 fields) and Southern (analysis of data on chemical composition of natural gases from 8 fields in the water area of the deep and 13 fields on land).

Comparative analysis of the composition of natural hydrocarbons has been carried out within the limits of the Western region based on the main structural-tectonic elements of the region: outer and inner zones of the Precarpathian deep, the Transcarpathian deep and the Lviv Paleozoic deep; within the Eastern region – the Northern edge of the deep and the deep itself; within the Southern region – water area and land. On this basis the definite zonality of the distribution of hydrocarbon components of natural gases within the bounds of the oil-gas regions has been determined. Such different composition of gases testifies to independent sources of hydrocarbon supply and different duration of migration of the latter.

The analyses of the features of the distribution of the components of natural gas of main oil- and gas-bearing regions of the Ukraine and of the gas presence in the aggregate have enabled us to determine main aspects of the processes both of lateral and vertical migration of hydrocarbons.

Keywords

geochemical features, migration, hydrocarbons, Western, Eastern and Southern oil-gas regions of Ukraine.

REFERENCES

Atlas rodovyshch nafty i hazu Ukrainy. T. 4–5. Zakhidnyi naftohazonosnyi rehion. (1998). Lviv: UHNA. [in Ukrainian]

Pavliuk, M. I., Varichev, S. O., Rizun, B. P., & Savchak, O. Z. (2002). Naftohazonosni provintsii Ukrainy (heodynamichnyi aspekt). Heolohiia i heokhimiia horiuchykh kopalyn, 1, 3–12. [in Ukrainian]

Pavliuk, M. et al. (2008). Heodynamichni umovy formuvannia naftohazonosnykh provintsii Ukrainy. Heolohiia i heokhimiia horiuchykh kopalyn, 3 (144), 16–25. [in Ukrainian]

Savchak, O. Z. (2003). Heokhimichni osoblyvosti naft i kondensativ Pivdennoho naftohazonosnoho rehionu Ukrainy. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4, 27–37. [in Ukrainian]

Savchak, O. Z. (2015). Heodynamichni aspekty roztashuvannia rodovyshch nafty i hazu naftohazonosnykh provintsii Ukrainy. In Heolohiia horiuchykh kopalyn: Materialy Mizhnar. nauk. konf. (Kyiv, 2–4 veresnia 2015 r.) (pp. 96–98). Kyiv. [in Ukrainian]

Savchak, O. Z. (2017a). Heokhimichni aspekty protsesiv naftohazonahromadzhennia naftohazonosnykh rehioniv Ukrainy. Heolohiia i heokhimiia horiuchykh kopalyn, 1–2 (170–171), 154–156. [in Ukrainian]

Savchak, O. Z. (2017b). Heokhimichni aspekty protsesiv mihratsii ta akumuliatsii vuhlevodniv Skhidnoho naftohazonosnoho rehionu Ukrainy. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4 (172–173), 9–29. [in Ukrainian]

Savchak, O. Z. (2018). Heodynamichni ta heokhimichni aspekty naftohazonahromadzhennia Zakhidnoho naftohazonosnoho rehionu Ukrainy. Heolohiia i heokhimiia horiuchykh kopalyn, 3–4 (176–177), 5–20. [in Ukrainian]

Savchak, O. Z. (2019). Heoloho-heokhimichni osoblyvosti rozmishchennia rodovyshch nafty i hazu naftohazonosnykh provintsii Ukrainy. In Tezy dop. Nauk. konf., prysviachenoi 50-richchiu In-tu heokhimii, mineralohii ta rudoutvorennia im. M. P. Semenenka NAN Ukrainy (Kyiv, 14–16 travnia 2019 r.) (T. 2, pp. 82–84). Kyiv. [in Ukrainian]