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Peninsular India suffers damaging earthquakes despite lying far from a plate boundary because

  • A.ancient faults within the plate are being reactivated
  • B.the peninsula is itself a separate plate
  • C.subduction occurs beneath the Deccan
  • D.the Deccan basalt generates earthquakes as it slowly cools

Answer: A

Correct answer: ancient faults within the plate are being reactivated

Intraplate earthquakes occur where old faults, formed in some earlier tectonic episode, are favourably oriented to the present stress field and slip again. Latur in 1993 and Bhuj in 2001 are the striking Indian examples, and they matter disproportionately because such regions have long recurrence intervals and correspondingly little seismic tradition in their building.

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