Social Sciences, asked by bharatgupta288, 6 months ago

Deccan plateau was formed due to continue earthquakes​

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Answered by nirupamabs1981
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Answered by nihasrajgone2005
1

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The Earth's curst under western India is unusually hot and is in 'a state of continuous uplift', according to geologists of the National Geophysical Research Institute (NGRI) in Hyderabad. They believe this discovery may help explain the occurrence of devastating earthquakes in the peninsular India witnessed in recent years.

Major earthquakes in the Indian subcontinent are the result of stresses built up due to the collision of the Indian plate with the Asian plate that gave rise to the Himalayas. These earthquakes had taken place along the plate boundary. The peninsular shield is supposed to be relatively seismically quiet. However it has witnessed several damaging earthquakes in Koyna (1967), Latur-Killari (1993), Jabalpur (1997) and Bhuj (2001). Despite a large number of investigations, the cause of their occurrence is unclear. Some scientists believe that Koyna earthquakes are induced by a nearby reservoir while others believe them to be of tectonic origin.

Now a detailed study including the characterization of the rocks sandwiched between the 'Deccan Traps' and the earth's crust in Latur and Koyna regions has shed new light on the origin of 'intraplate' earthquakes, the NGRI scientists report1.

The Deccan Traps refer to the pile of volcanic rocks, 1 to 2 kilometres thick, that covered nearly half a million square kilometre area of central and western India following one of the largest eruptions on Earth 65 million years ago. What underlies this volcanic rock cover had remained an enigma and the NGRI team set out to crack it in the hope of looking for clues for earthquakes in the peninsular India.

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