Arctic rocks may contain oldest remnants of Earth
source: http://www.bbc.co.uk/news/science-environment-10941026
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Scientists have found Arctic rocks that may preserve the earliest remnants of Earth.Over billions of years, much of the material that made up the early Earth was modified by processes such as melting and mixing.
link:http://www.bbc.co.uk/news/science-environment-10941026
link:http://www.bbc.co.uk/news/science-environment-10941026
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