Skip to main content Accessibility help
×
Home

Experimental Determination of the 14C Initial Activity of Calcareous Deposits

  • Ines Krajcar Bronić (a1), Nada Horvatinčić (a1), Dušan Srdoč (a1) and Bogomil Obelić (a1)

Abstract

We have reconstructed the initial activity of calcareous sediments by 1) measuring the 14C activity of recent pre-bomb-test calcareous deposits, 2) calculating the ratio of the 14C activity of the calcareous sediment to that of the adjacent coeval wood, and 3) extrapolating 14C activity of the deep lacustrine sediment layers to the surface, assuming a constant sedimentation rate. We show here that the uppermost sediment is affected by the global increase of atmospheric 14C activity due to thermonuclear bomb tests in the early 1960s. 14C activity of submerged aquatic plants showed values similar to 14C activity of DIC. Thus, organic residue of the sediment cannot be used for reliable 14C dating because of the unknown fraction of aquatic plant detritus. The initial activity, A0, obtained in a case study of the geochronology of carbonates in the Plitvice Lakes area, ranged from 70.5 to 72.2 pMC for Lake Prošće sediment, and from 75.9 to 76.7 pMC for Lake Kozjak sediment. These values also agree with calculated values based on the downstream increase of 14C activity of DIC in freshwater open to the atmosphere.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Experimental Determination of the 14C Initial Activity of Calcareous Deposits
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Experimental Determination of the 14C Initial Activity of Calcareous Deposits
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Experimental Determination of the 14C Initial Activity of Calcareous Deposits
      Available formats
      ×

Copyright

References

Hide All
Buchardt, B. and Fritz, P. 1980 Environmental isotopes as environmental and climatological indicators. In Fritz, P. and Fontes, J. Ch., eds., Handbook of Environmental Isotope Geochemistry 1. Amsterdam, Elsevier Scientific Publishing Co.: 545 p.
Dulinski, M. and Rozanski, K. 1990 Formation of 13C/12C isotope ratios in speleothems: A semi-dynamic model. Radiocarbon 32(1): 716.
Fontes, J. Ch. 1983 Dating of groundwater. In Guidebook on Nuclear Techniques in Hydrology. Technical Report Series 91, Vienna, IAEA: 285317.
Geyh, M. A. 1973 On the determination of the initial 14C content in groundwater. In Rafter, T. A. and Grant-Taylor, T., eds., Proceedings of the 8th International 14C Conference. Wellington, Royal Society of New Zealand: D58D69.
Horvatinčić, N., Srdoč, D., Šilar, J. and Tvrdikova, H. 1989 Comparison of the 14C activity of groundwater and recent tufa from karst areas in Yugoslavia and Czechoslovakia. In Long, A. and Kra, R. S., eds., Proceedings of the 13th International 14C Conference. Radiocarbon 31(3): 884892.
Krajcar Bronić, I., Horvatinčić, N., Srdoč, D. and Obelić, B. 1986 On the initial 14C activity of karst aquifers with short mean residence time. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28(2A): 436440.
Levin, I., Schuchard, J., Kromer, B. and Münnich, K. O. 1989 The continental European Suess effect. In Long, A. and Kra, R. S., eds., Proceedings of the 13th International 14C Conference. Radiocarbon 31(3): 431440.
Marčenko, E., Srdoč, D., Golubić, S., Pezdič, J. and Head, M. J. 1989 Carbon uptake in aquatic plants deduced from their natural 13C and 14C content. In Long, A. and Kra, R.S., eds., Proceedings of the 13th International 14C Conference. Radiocarbon 31(3): 785794.
Obelić, B., Krajcar Bronić, I., Srdoč, D. and Horvatinčić, N. 1986 Environmental 14C levels near the 632 MWe Nuclear Power Plant Krško in Yugoslavia. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28 (2A): 644648.
Pazdur, A. 1988 The relation between carbon isotope composition and apparent age of freshwater tufaceous sediments. Radiocarbon 30(1): 718.
Pazdur, A., Pazdur, M. F. and Szulc, J. 1988 Radiocarbon dating of holocene calcareous tufa in Southern Poland. Radiocarbon 30(2): 133151.
Pentecost, A., Thorpe, P. M., Harkness, D. D. and Lord, T. C. 1990 Some radiocarbon dates for tufa of the Craven district of Yorkshire. Radiocarbon 32(1): 9397.
Scharpenseel, H-W. and Becker-Heidmann, P. 1989 Shifts in 14C patterns of soil profiles due to bomb carbon, including effects of morphogenetic and turbation processes. In Long, A. and Kra, R. S., eds., Proceedings of the 13th International 14C Conference. Radiocarbon 31(3): 627636.
Srdoč, D. 1986 The response of hydrological systems to the variations of the 14C activity of the atmosphere. Nuclear Instruments and Methods B17: 545549.
Srdoč, D., Horvatinčić, N., Ahel, M., Giger, W., Schaffner, C., Krajcar Bronić, I., Petricioli, D., Pezdič, J., Marčenko, E. and Plenković-Moraj, A. 1992 Anthropogenic influence on the 14C activity and other constituents of recent lake sediments: A case study. Radiocarbon, this issue.
Srdoč, D., Horvatinčić, N., Obelić, B., Krajcar Bronić, I. and Sliepčević, A. 1987 Rudjer Bošković Institute radiocarbon measurements IX. Radiocarbon 29(1): 115134.
Srdoč, D., Horvatinčić, N., Obelić, B. and Sliepčević, A. 1983 Radiocarbon dating of tufa in paleoclimatic studies. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 11th International 14C Conference. Radiocarbon 25(2): 421427.
Srdoč, D., Krajcar Bronić, I., Horvatinčić, N. and Obelić, B. 1986a Increase of 14C activity of dissolved inorganic carbon along a river course. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28(2A): 515521.
Srdoč, D., Obelić, B., Horvatinčić, N., Krajcar Bronić, I., Marčenko, E., Merkt, J., Wong, H. K. and Sliepčević, A. 1986b Radiocarbon dating of lake sediment from two karst lakes in Yugoslavia. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 12th International 14C Conference. Radiocarbon 28(2A): 495502.
Srdoč, D., Obelić, B., Horvatinčić, N., Krajcar Bronić, I. and Sliepčević, A. 1989 Rudjer Bošković Institute radiocarbon measurements XI. Radiocarbon 31(1): 8598.
Thorpe, P. M., Otlet, R. L. and Sweeting, M. M. 1980 Hydrological implications from 14C profiling of UK tufa. In Stuiver, M. and Kra, R. S., eds., Proceedings of the 10th International 14C Conference. Radiocarbon 22(3): 897908.

Experimental Determination of the 14C Initial Activity of Calcareous Deposits

  • Ines Krajcar Bronić (a1), Nada Horvatinčić (a1), Dušan Srdoč (a1) and Bogomil Obelić (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed