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The Shillong plateau is seismically notable because it is

  • A.part of the stable Indian shield and free of any faults
  • B.an uplifted crustal block bounded by active faults
  • C.a sedimentary basin free of faulting
  • D.a volcanic province of recent age

Answer: B

Bounding structures such as the Dauki and Oldham faults have lifted the block clear of the surrounding plains and remain capable of large events. The 1897 earthquake there produced some of the largest accelerations ever inferred.

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