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How did rocks from the Grand Canyon end up 13,500km away in Australia?

CENTRAL Arizona is a good 13,500 kilometres from the Australian island of Tasmania. Being a third of the world away, you wouldn’t think the two would have much in common in terms of geology – but you would be wrong. Scientists in Tasmania have found ancient rocks that have the same minerals and geochemical make-up as some of the oldest rock layers found in natural wonder of the world, the Grand Canyon. While this seems perplexing, the two regions were actually part of one supercontinent around one billion years ago. SEE ALSO: Before the dinosaurs, Thailand and Australia were actually neighbours Named Rodinia, this mega landmass is thought to have contained all of today’s continental plates. The research, published in the journal Geology, found the rocks were aged between 1.1 and 1.2 billion years old and their geochemistry is more closely related to those in the Grand Canyon which dates back...

 

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