• Crustal thickness mapping in Raipur–Katni area of Narmada–Son lineament in central India derived from 3D Euler deconvolution of magnetic data

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    • Keywords

       

      Narmada–Son lineament; Euler deconvolution; structural index; source depth; Mahakoshal; Son–Narmada north fault; Son–Narmada south fault.

    • Abstract

       

      The Narmada–Son lineament (NSL) is one of the most prominent tectonic features which divides the Indian peninsula into two subcontinents, northern and southern India since Precambrian times. The area is seismically active and geologically complex with different geological formations. Magnetic data divides the area into two parts and more prominent magnetic highs are observed near Tikwa, Mau and Amarpur regions with 800, 600 and 400 nT, respectively due to the presence of the crystalline basement rock. Tectonic resettlement and lithological changes causes upwarpment of Mahakoshal rocks. In the present study, magnetic data interpretation is carried out for locating depth of causative body and delineating structural fault/dyke boundaries using Euler deconvolution technique. Most of the faults are oriented in the ENE–WSW direction; however, few more faults are identified which are oriented in the SE to NW direction. These fault patterns suggest that the area is exaggerated by tectonic turmoil and distressed both sedimentary to basement rocks isolating the area into numerous faulted blocks. The maximum depths (< 4.5 km) observed at Katni and Umaria area and moderate depths (between 4.0 and 4.5 km) observed towards east of Katni, Ramnagar, Burwa and east of Umaria and Sarna area.

    • Author Affiliations

       

      G K Ghosh1 C L Singh2

      1. Oil India Limited, Duliajan 786 602, India.
      2. Banaras Hindu University, Varanasi 221 005, India.
    • Dates

       
  • Journal of Earth System Science | News

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