Alfred Wegener was the geologist who in 1924 propagated the theory of continental drift which is very much in vogue now. According to this theory, nearly 150 million years ago, there was a single continent on earth known as ‘pangaea’ which broke into several pieces and began to drift apart. North and South America pulled away from Africa and Eurasia and drifted to the west. In between the two continental blocks, America and Africa, the Atlantic basin appeared. Antarctica, Australia, peninsular India and Madagascar were neatly nested together close to the southern tip of South Africa. Again they drifted to the present position, giving way to Indian Ocean basin. This theory has now been established by the theory of ‘plate tectonics’ that, continents are moving as plateaus, on a semi-liquid surface which supports the continental drift theory.
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