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      https://www.ias.ac.in/article/fulltext/jess/121/02/0453-0462

    • Keywords

       

      Lineament; fracture; remote sensing; hydrology; data analysis.

    • Abstract

       

      Addressing the geologic significance of lineaments and their correlation with joints/fractures is still unclear. The present study attempts to analyse the lineament swarms developed in a Precambrian metamorphic terrain in India using both unfiltered and filtered techniques. The unfiltered analysis technique shows that the major lineament and fracture trends are oriented along EW and NS directions respectively, thus failing to provide any correlation between them. The application of domain-based filtering techniques identifies a highly predominant fracture-correlated lineaments in mica schist constituting the EW trending shear zone in the area. This correlation is not evident in the areas north and south of the shear zone, where the lineaments are consistently oriented along the foliation planes of the rocks and are designated as ‘foliation correlated’. The present analysis indicates that the fracture frequency and the strain history may have played significant roles for the formation of fracture-correlated lineaments in the metamorphic terrain.

    • Author Affiliations

       

      Tapas Acharya1 2 Sukumar Basu Mallik3

      1. Department of Geology, Durgapur Government College, University of Burdwan, Durgapur 713 214, India.
      2. Present Address: Department of Geology, Hooghly Mohsin College, University of Burdwan, Chinsurah 712 101, India.
      3. Department of Geological Sciences, Jadavpur University, Kolkata 700 032, India.
    • Dates

       
  • Journal of Earth System Science | News

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