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Origin of 14C in Icelandic Groundwater

  • Árný E. Sveinbjörnsdóttir (a1), Jan Heinemeier (a2) and Stefán Arnórsson (a1)

Abstract

We report the first attempt to date Icelandic groundwater by the radiocarbon dating technique. We propose that boron concentrations of the water samples can be taken as a measure of the amount of dead CO2 in the groundwater leached from rock. By assuming that the ratio of boron to CO2 is the same in the rock and groundwater it is possible to correct the 14C concentration for the contribution of rock-derived carbon in the groundwater and thus calculate the initial (undiluted) 14C concentration. When this correction is applied, the values for the cold and warm waters lie in the range 60 to 110 pMC, which is in accordance with the estimated residence time for the groundwater. We have also calculated the fractions of atmospheric and organic carbon in the water, based on the δ13C measurements, and the results agree well with the general hydrology and vegetational cover of the areas. Results from geothermal systems indicate that it is possible to use 14C to estimate relative age differences of the water in a particular geothermal area.

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References

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Ármannsson, H., Gudmundsson, Á. and Hauksson, T. 1982 Magmatic gases in well fluids aid the mapping of the flow pattern in a geothermal system. Geochimica et Cosmochimica Acta 46: 167177.
Árnason, B. 1976 Groundwater systems in Iceland traced by deuterium. Societas Scientiarum Islandica 42: 236 p.
Árnason, B. 1977 Hydrothermal systems in Iceland traced by deuterium. Geothermics 5: 125151.
Arnórsson, S. 1978 Precipitation of calcite from flashed geothermal waters in Iceland. Contributions to Mineralogy and Petrology 66: 2128.
Arnórsson, S. 1983 Chemical equilibria in Icelandic geothermal systems—Implications for chemical geothermometry investigations. Geothermics 12(2/3): 119128.
Arnórsson, S. and Andrésdóttir, A. 1995 Processes controlling the distribution of B and Cl in natural waters in Iceland. Geochimica et Cosmochimica Acta. In press.
Arnórsson, S., Andrésdóttir, A. and Sveinbjörnsdóttir, Á. E. 1993 The distribution of Cl, B, δD and δ18O in natural waters in the Southern Lowlands geothermal area in Iceland. Contribution to an international conference on fluid evolution, migration and interaction in rocks. British Gas : 313318.
Aravena, R. and Suzuki, O. 1990 Isotopic evolution of river water in the northern chile region. Water Resources Research 26(12): 28872895.
Aravena, R. and Wassenaar, L. I. 1993 Dissolved organic carbon and methane in a regional confined aquifer, southern Ontario, Canada: Carbon isotope evidence for associated subsurface sources. Applied Geochemistry 8: 483493.
Bödvarsson, G. 1961 Physical characteristics of natural heat resources in Iceland. Jökull 11: 2938.
Dörr, H., Sonntag, S. and Regenberg, W. 1987 Field study on the initial 14C content as a limiting factor in 14C groundwater dating. In Isotope Techniques in Water Resources Development. IAEA, Vienna: 7386.
Ellis, A. J. 1970 Quantitative interpretation of chemical characteristics of geothermal solutions. Geothermics , Special Issue 2: 516528.
Flower, M. F. J., Pritchard, R. G., Brem, G., Cann, J. R., Delaney, J., Emmerman, R., Gibson, I. L., Oakley, P. J., Robinson, P. T. and Schmincke, H.-U. 1982 Chemical Stratigraphy, Iceland Research Drilling Project Reydarfjordur, Eastern Iceland. Journal of Geophysical Research 87(B8): 64896510.
Gíslason, S. and Arnórsson, S. 1993 Dissolution of primary basaltic minerals in natural waters: Saturation state and kinetics. Chemical Geology 105: 117135.
Harder, H. 1970 Boron content of sediments as a tool in facies analysis. Sedimentary Geology 4: 153175.
Mook, W. G. 1980 Carbon-14 in hydrogeological studies. In Fritz, P. and Fontes, J. Ch., eds., Handbook of Environmental Isotope Geochemistry. The Terrestrial Environment. Amsterdam, Elsevier: 4974.
Sveinbjörnsdóttir, Á. E. 1988 Stable isotope measurements on the geothermal fluids in Mosfellssveit, Iceland. Science Institute, University of Iceland. RH-10-88: 20 p (mimeographed, in Icelandic).
Sveinbjörnsdóttir, Á. E., Eiríksson, J., Geirsdóttir, Á., Heinemeier, J. and Rud, N. 1993 The Fossvogur marine sediments in SW Iceland—Confined to the Aller⊘d/Younger Dryas transition by AMS 14C dating. Boreas 22:147157.
Sveinbjörnsdóttir, Á. E., Heinemeier, J., Rud, N. and Johnsen, S. 1992 14C anomalies observed for plants growing in Icelandic geothermal waters. In Long, A. and Kra, R. S., eds., Proceedings of the 14th International 14C Conference. Radiocarbon 34(3): 696703.
Taylor, C. B. 1994 Hydrology of the Poverty Bay flats aquifers, New Zealand: recharge mechanisms, evolution of the isotopic composition of dissolved inorganic carbon, and ground-water ages. Journal of Hydrology 158: 151185.
Tómasson, J., Fridleifsson, I. B. and Stefánsson, V. 1975 A hydrological model for the flow of thermal water in southwestern Iceland with special reference to the Reykir and Reykjavik thermal areas. Second United Nations Symposium on the Development and Use of Geothermal Resources, San Francisco 20–29 May 1975 , 2: 643648.
Wada, K., Arnalds, Ó., Kakuto, Y., Wilding, L. P. and Hallmark, C. T. 1992 Clay minerals of four soils formed in eolian and tephra materials in Iceland. Geoderma 52: 351365.
Wikner, B. 1981 Boron determination in natural waters with curcumin using 2,2-dimethyl-1,3-hexanediol to eliminate interferences. Communications in Soil Science and Plant Analysis 12: 697709.

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