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4.4 billion years ago Earth had no mountains and was covered with water, say scientists

by LiveModern Webmaster last modified May 11, 2017 01:04 AM
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by (Lacy Cooke) last modified May 10, 2017

Tiny grains of zircon have allowed two scientists at Australian National University to paint a portrait of Earth over four billion years ago. Their scrutiny of the mineral grains - the oldest fragments of Earth we've ever uncovered - led them to think our world was a much different place back then. They say Earth was mountainless and barren, and probably only had a few islands poking up above the water blanketing the rest of the planet.





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