Carbon isotopic composition of fresh groundwater in the territory of Belarus (in the context of its vulnerability estimation)

• Autorzy: Mikhajlov N. , Kolkovskij V. , Pavlova I. , Luchina G. , Kolosov I.
• Języki publikacji: EN

Abstrakty

EN

Investigations of the distribution of the carbon isotopes (14C, 13C) at water intakes used for drinking water supply of Minsk (Quaternary and Upper Proterozoic aquifers complexes) and Gomel (Cretaceous and Paleogene aquifers) became the first stage of works aimed at the estimation of vulnerability of fresh groundwater aquifers in Belarus. The radiocarbon concentrations obtained and corrections for carbon stable isotopes were used to calculate the formal and corrected radiocarbon age (time of occurrence in an aquifer) of fresh groundwater of the studied aquifers. So, the most ancient radiocarbon age is characteristic of water samples from the Upper Proterozoic aquifer of Belarusian hydrogeological massif in the Minsk region (12,000-14,000 years). Fresh groundwater from the Cretaceous aquifer in the junction zone of the Pripyat artesian basin and Voronezh hydrogeological massif (Gomel region) show wider age range (7000-15,000 years). As aquifers of Belarus become younger, the groundwater isotope composition area comes more similar to the recent water area (II). An analysis of isotope ratios suggests (area I) that only a part of groundwater samples from Cenozoic aquifers (Paleogene and Quaternary Dnieper-Sozh horizon is found in the area of radioactive decay (this is more typical for water from Paleogene aquifer) and may corresponds to the actual time of its occurrence in an aquifer.

Słowa kluczowe

EN

groundwater; carbon isotopic composition

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2004
• Tom: Vol. 23
• Strony: 67--70
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Mikhajlov N.

• Institute of Geological Sciences of the National Academy of Sciences of Belarus, Kuprevich Str.7, Minsk, 220141 Republic of Belarus

autor

Kolkovskij V.

• Institute of Geological Sciences of the National Academy of Sciences of Belarus, Kuprevich Str.7, Minsk, 220141 Republic of Belarus

autor

Pavlova I.

• Institute of Geological Sciences of the National Academy of Sciences of Belarus, Kuprevich Str.7, Minsk, 220141 Republic of Belarus

autor

Luchina G.

• Institute of Geological Sciences of the National Academy of Sciences of Belarus, Kuprevich Str.7, Minsk, 220141 Republic of Belarus

autor

Kolosov I.

• Institute of Geological Sciences of the National Academy of Sciences of Belarus, Kuprevich Str.7, Minsk, 220141 Republic of Belarus

Bibliografia

• 1. Bondarenko G., 1983: Forming of isotope content of carbonate natural water system. Kiev: 152 (in Russian).
• 2. Ferronsky V., Polyakov V. and Romanov V., 1984: Cosmogenic isotopes in Hydrosphere. Moscow (in Russian).
• 3. Goldberg V., 1987: Interrelation between groundwater pollution and environment. Leningrad: 248 (in Russian).
• 4. Goldberg V. and Gazda S., 1984: Hydrogeological background for groundwater protection. Nedra. Moscow: 262 (in Russian).
• 5. Libby W.F., 1967: History of radiocarbon dating. Radioactive dating and methods of low-level counting. Vienna IAEA.
• 6. Mikhailov N., Kolkovsky V., Luchina G. and Pavlova I., 2003: Radiocarbon studies at the Institute of Geological Sciences of the National Academy of Sciences of Belarus (Methodical aspects). Litasphera 1(18). Minsk: 117-126 (in Russian).
• 7. Münnich K.O., RoetherW. and Thilo L., 1967: Dating of groundwater with tritium and «14C. Isotopes in hydrology. Vienna IAEA.
• 8. Pearson F.I. and White D.E.,1967: Carbon-14 ages and flow rates of water in Carizzo Sand. Atascosa County, Texas. Water Research. Fources 3.
• 9. Pearson FJ. and Swarzenki W. V., 1974: 14C evidence for the origin of arid region groundwater, North-Eastern province, Kenya. In: Isotope techniques in ground water hydrology. Vienna II.
• 10. Polyakov V. and Seletsky J., 1979: Natural factors influencing the accuracy of radiocarbon dating of groundwater, and means of factor determination. Isotope studies of groundwater. Moscow: 122-130 (in Russian).
• 11. Polyakov V., 1991: Application of isotope methods in assessing protection of groundwater from contamination. Application of geophysical methods in environmental issues. Moscow (in Russian).
• 12. Vogel I. C., 1967: Investigation of ground water flow with radiocarbon. Isotopes in hydrology. Vienna: IAEA.
• 13. Zektser I., 2001: Groundwater as a component of environment. Nautchny Mir. Moscow: 328 (in Russian).