• Moment of inertia for rock blocks subject to bookshelf faulting with geologically plausible density distributions

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    • Keywords

       

      Rotational inertia; second moment of mass; density variation with depth; structural geology

    • Abstract

       

      Moment of Inertia (MOI) for rock blocks that glided smoothly into book-shelf dispositions are deduced considering realistic linear and exponential 3D variations in density along specific axes/directions. Knowing (empirical) algebraic relations of density with depth, which could also be anything other than the exponential and linear variations considered in this work, geoscientists can deduce the MOI by following the same process. MOI for a homogeneous parallelepiped block along any direction is proportional to the length of the block in that direction. However, this simple relation does not hold true for rock blocks with variable densities. Nevertheless, as the block length increases, the MOI along that direction would also increase.

    • Author Affiliations

       

      Soumyajit Mukherjee1

      1. Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India. e-mail: soumyajitm@gmail.com
    • Dates

       
  • Journal of Earth System Science | News

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