Scientists claim discovery of Zealandia a submerged continent in Pacific Ocean
Posted on:21 Feb 2017 09:10:00
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21 February 2017 Current Affairs: Geologists have claimed discovery of new geological continent named Zealandia submerged beneath the south-west Pacific Ocean. Zealandia is around 4.5-million square km land mass and is 94% under water. Only its highest points — New Zealand and New Caledonia are visible.
Zealandia is two-thirds the size of Australia and spreads out over 4.9-million-square kilometres of continental crust.
It was once a part of Australia. It is believed that it had broken off from Antarctica about 100 million years ago, and then from Australia about 80 million years ago as part of the breakup of super-continent Gondwanaland and sank beneath sea.
Sea-floor samples show that Zealandia consists of light continental crust and not the dark volcanic rocks that make up nearby underwater plateaus.
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