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TNPSC Current Affairs 2017 February 20 (all)

1.Barren Island -India's Only Live Volcano Active Again After 150 Years

India’s only live volcano in the Andaman and Nicobar Islands which had started showing active in the year 1991 after being dormant for more than 150 years.

The only live volcano in Barren Island erupted in 1991 and has showing sporadic activity since then and started spewing ash, the researchers of Goa based National Institute of Oceanography (NIO) has said.

A Group of Scientist from CSIR –National Institute of Oceanography led by Abhay Mudholkar reported that the Barren Island Volcano is active and spewing smoke and lava once again after being dormant for more than 150 years.

These volcanoes are formed due to rising magma formed deep in mantle due to the melting of subducted Indian Ocean Crust.

About Barren Island Volcano.

Barren Island is located in Andaman which is 140-km north-east of Port Blair. It is being dormant for more than 150 years. It is first recorded eruption on 1787 and it is last recorded eruption on 1852. It is the only Active volcano in India.

2. Scientists claim discovery of drowned continent- Zealandia.

Scientist have reported that discovery of eighth continent with two-thirds the size of Australia has been found beneath the south-west Pacific Ocean- named Zealandia.

Zealandia stretched 5-Million square kilometres and majority of region under the ocean while some parts are in modern day New Zealand, New Caledonia and some part above the Pacific Ocean.

Scientist believed that Zealandia was possibly part of Super-continent Gondwana and broke away nearly 100 million year ago.

Mortimer a lead author of paper titled ‘Zealandia: Earth’s hidden continent’, says that the new discoveries prove what had long been suspected.

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