Age of Saurashtra miliolites by U-Th decay series methods: possible implications to their origin
N Hussain N Bhandari K R Ramanathan B L K Somayajulu
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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.
N Hussain1 N Bhandari1 K R Ramanathan1 B L K Somayajulu1
Volume 132, 2023
Continuous Article Publishing mode
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