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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/129/0113

    • Keywords

       

      GPB; Basalt lava flow field; Deccan Volcanic Province; Chron 29

    • Abstract

       

      We describe the distribution and characters of a megaporphyritic basalt flow field that was arguably the earliest described ‘giant phenocryst basalt’ (GPB) from the Deccan Volcanic Province (DVP). It is a marker horizon exposed in a > 30,000 $km^{2}$ area below the Mahabaleshwar Formation in the western DVP. Its presence, distribution and stratigraphic importance as a regional marker horizon are enumerated. Available geochronological and paleomagnetic data suggest that the stratigraphic position of the Rajgad GPB coincides with polarity reversal in Chron 29 recorded from the basaltic lava sequence of the Western DVP.

    • Author Affiliations

       

      PRIYANKA SHANDILYA1 POUSHALI CHATTERJEE2 KONDEPUDI PATTABHIRAM1 MAKARAND BODAS2 KANCHAN PANDE1 VIVEK S KALE3

      1. Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
      2. Geological Survey of India (CR), SU: Maharashtra, Alandi Road, Pune 411 006, India.
      3. Advanced Center for Water Resources Development and Management (ACWADAM), Kshipra Society, Pune 411 058, India.

    • Dates

       
      Published
      24 April 2020
      Manuscript received
      2 November 2019
      Manuscript revised
      1 February 2020
      Accepted
      7 February 2020
      Early published
      Unedited version published online
      Final version published online
      22 April 2020

    • Supplementary Material

       

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