• 14C and 234U-Excess Dating of Groundwater in the Haifa Bay Region, Israel

      Rogojin, Vasily; Carmi, Israel; Kronfeld, Joel (Department of Geosciences, The University of Arizona, 1998-01-01)
      Radiocarbon activities and uranium isotopic disequilibria were measured in water samples from both the sandy Pleistocene coastal aquifer and within the upper Cretaceous Judea Group carbonate aquifer of northwestern Israel. The samples in both aquifers exhibit a decrease in 14C activity that is concomitant to the growth in 234U-excess. This suggests that under specific conditions, 234U-excess dating of groundwater can be used to corroborate 14C dates, while offering the possibility of extending the range of dating of groundwater beyond that of 14C.
    • Mathematical Modeling of the Distribution of Natural 14C, 234U, and 238U in a Regional Ground-Water System

      Pearson, F. J.; Noronha, C. J.; Andrews, R. W. (American Journal of Science, 1983-01-01)