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This article in SSSAJ

  1. Vol. 44 No. 5, p. 1059-1062
    Received: June 1, 1979
    Accepted: May 5, 1980

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Calcium Carbonate in a Calcareous Soil from the Jordan Valley, Israel: Its Origin as Revealed by the Stable Carbon Isotope Method1

  1. Mordeckai Magaritz and
  2. Abraham J. Amiel2



The development of calcareous soil in semiarid zones is accomplished by dissolution and reprecipitation of calcium carbonate (CaCO3) minerals. The proportion of carbonate in the soil of the Jordan Valley that is pedogenic in origin was determined using the stable C isotope method. Forty to sixty percent of the carbonate remaining in soil horizons A and B undergo dissolution and reprecipitation processes. These changes were detected by the decrease in the 13C/12C ratio from the parent material average (−2.5‰) to the B horizon value (−7.4‰). A scale is proposed to determine the percentages of pedogenic carbonate in soil.

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