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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/089/01/0023-0029

    • Keywords

       

      Miliolites; Saurashtra coast; U ages; carbon dating

    • Abstract

       

      The miliolite deposits of Saurashtra have been dated by234U,230Th,231Pa and14C methods. Concordant ages of 105 years using the U decay series isotopes are obtained which agree with the ages of the coral reefs of Okha-Dwaraka coast suggesting a contemporaneous origin for both. The lower14C ages (≤40,000 years) may be due to a recent influx of seawater or ground water. Quartz and clay minerals together constitute only ≤10% by weight, as such the aeolian characteristics of quartz grains may not be relevant to the origin of the miliolites.

    • Author Affiliations

       

      N Hussain1 N Bhandari1 K R Ramanathan1 B L K Somayajulu1

      1. Physical Research Laboratory, Ahmedabad - 380 009
    • Dates

       
  • Journal of Earth System Science | News

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