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April Sumatra quakes signal Indian ocean plate break-up
The sequence of huge earthquakes that struck off the coast of Sumatra in April may signal the creation of a new tectonic plate boundary.
Scientists give the assessment in this week's Nature journal.
They say their analysis of the tremors - the biggest was a magnitude 8.7 - suggests major changes are taking place on the ocean floor that will eventually split the Indo-Australian plate in two.
It is not something that will happen soon; it could take millions of years.
More at: http://www.bbc.co.uk/news/science-environment-19732681
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