• Occurrence of volcanic ash in the Quaternary alluvial deposits, lower Narmada basin, western India

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/117/01/0041-0048

    • Keywords

       

      Toba; ash; Quaternary alluvial deposits; lower Narmada basin; western India.

    • Abstract

       

      This communication reports the occurrence of an ash layer intercalated within the late Quaternary alluvial succession of the Madhumati River, a tributary of the lower Narmada River. Petrographic, morphological and chemical details of glass shards and pumice fragments have formed the basis of this study. The ash has been correlated with the Youngest Toba Tuff. The finding of ash layer interbedded in Quaternary alluvial sequences of western Indian continental margin is significant, as ash being datable material, a near precise time-controlled stratigraphy can be interpreted for the Quaternary sediments of western India. The distant volcanic source of this ash requires a fresh re-assessment of ash volume and palaeoclimatic interpretations.

    • Author Affiliations

       

      Rachna Raj1

      1. Department of Geology, Faculty of Science, M. S. University of Baroda, Vadodara 390 002, India.
    • Dates

       
  • Journal of Earth System Science | News

© 2017-2019 Indian Academy of Sciences, Bengaluru.