Indian Ocean cocktail party leaves trail of party hats behind

29 November 2011 A sample of volcanic rock dredged from a seamount. Scientists have unexpectedly found traces of the supercontinent Gondwana in the Indian Ocean - in the process solving a mystery behind a large group of ocean 'mountains' known as seamounts, including Christmas Island.The German-Australian team of marine geologists set out on the German research vessel Sonne to map and sample about 60 seamounts - ranging in height from one to three kilometres - in one the world's largest

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