• Rheological stratification of the Indian continental lithosphere: Role of diffusion creep

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    • Keywords

       

      Rheology; diffusion creep; dislocation creep; Indian lithosphere

    • Abstract

       

      Dynamic recrystallization and reduction in grain-size at large strains, e.g. in shear zones, leads to rheological weakening of the lithosphere and facilitates intense ductile deformation. In the present work, we include this effect into the rheological models of the Indian continental lithosphere to analyse its role in modifying the rheological structure and strength of the Indian lithosphere. The results computed by using quartz and felspar rheologies for the upper and lower crust, respectively, and grain-size dependent olivine rheology for the upper mantle, indicate an increase in the ductility of the mantle lithosphere.

    • Author Affiliations

       

      A Manglik1 R N Singh1 2

      1. National Geophysical Research Institute, Hyderabad - 500 007, India
      2. CSIR Centre for Mathematical Modelling and Computer Simulation, Bangalore - 560037, India
    • Dates

       
  • Journal of Earth System Science | News

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