Some Recent Earthquakes in Peninsular India

The Peninsular Shield of India, generally considered to be aseismic, has recently experienced significant activity al Koyna (1967), Bhadrachalam (1969) and Broach (1970). Besides, over two hundred tremors, with magnitudes ranging from 2 to 5, have also been identified mainly in Andhra Pradesh, Karnataka and Maharashtra during 1967 to 1977, and are catalogued. Low magnitude activity (M < 4) is observed to be prevalent in the Peninsular Shield.