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Comparison of the 14C activity of groundwater and recent Tufa from Karst areas in Yugoslavia and Czechoslovakia

Published online by Cambridge University Press:  18 July 2016

Nada Horvatinčć ,
Dušan Srdoč ,
J A N Šilar  and
Hana Tvrdíková
Nada Horvatinčć
Affiliation:
Ruder Bošković Institute, PO Box 1016, 41001 Zagreb, Yugoslavia
Dušan Srdoč
Affiliation:
Ruder Bošković Institute, PO Box 1016, 41001 Zagreb, Yugoslavia
J A N Šilar
Affiliation:
Ruder Bošković Institute, PO Box 1016, 41001 Zagreb, Yugoslavia
Hana Tvrdíková
Affiliation:
Ruder Bošković Institute, PO Box 1016, 41001 Zagreb, Yugoslavia
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Abstract

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14C activity of dissolved inorganic carbon (DIC) in water and in recent tufa samples in several karst areas of Yugoslavia and Czechoslovakia was measured. Groundwater from 11 karst springs were measured for their isotopic content (14C, 3H, 13C), chemical composition (HCO3−, Ca2+, Mg2+) and physico-chemical properties (temperature, pH). Seasonal variations of the 14C activity of DIC in two karst springs in Plitvice Lakes area, Yugoslavia, were measured systematically from 1979 – 1987.14C activity of recent tufa samples from several locations downstream were also measured. The activity of DIC in karst spring water in both countries ranged from 63–87 pMC, which is attributed to differences in geologic structure of the recharge area, topsoil thickness and composition. Grouping of 14C activities of DIC ca (82±4)% is evident. Tritium activity at all the springs indicated short mean residence time (1–10 yr). Concentration of HCO3−, Ca2+ and Mg2+ in spring water varied with geomorphology. 14C activity of streamwater and recent tufa increased downstream from karst springs due to the exchange between atmospheric CO2 and DIC.

Type
IV. Applications
Information
Radiocarbon , Volume 31 , Issue 3: June 20-25, 1988 Dubrovnik, Yugoslavia , 1989 , pp. 884 - 892
Copyright
Copyright © The American Journal of Science 

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