• Discontinuity surfaces and event stratigraphy of Okha Shell Limestone Member: Implications for Holocene sea level changes, western India

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      https://www.ias.ac.in/article/fulltext/jess/120/04/0723-0734

    • Keywords

       

      Beach rocks; Okha Shell Limestone Member; discontinuity surfaces; taphofacies; Early Holocene.

    • Abstract

       

      The Okha Shell Limestone Member of Chaya Formation is the coarse grained, shell rich deposit commonly recognized as the beach rocks. It has been age bracketed between Late Pleistocene and Holocene. Late Quaternary sea level changes have been studied with beach rocks along the Saurashtra coastal region. The present study has been carried out in the Okhamandal area of the Saurashtra peninsula especially on the Okha Shell Limestone Member as exposed at various locations along the coast from north to south. Temporal and spatial correlations of the observations have revealed three events in the Okha Shell Limestone Member of Chaya Formation that are correlated laterally. The events show depositional breaks represented by discontinuity surfaces, the taphofacies varieties and ichnological variations. The present study in the context of available geochrnological data of the region suggests a prominent depositional break representing low sea level stand (regression) during an Early Holocene during the deposition of Okha Shell Limestone Member.

    • Author Affiliations

       

      Uday Bhonde1 Bhawanisingh G Desai2

      1. Pavandham Society, Samta Road, Subhanpura, Vadodara 390 023, India.
      2. School of Petroleum Technology, Pandit Deendayal Petroleum University, Gandhinagar, Gujarat, India.
    • Dates

       
  • Journal of Earth System Science | News

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