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zircon, Tag
- 4.4 billion years ago Earth had no mountains and was covered with water, say scientists Wed, 10 May 17, 10:24pmTiny zircon crystals have allowed scientists at Australian National University (ANU) to paint a portrait of what Earth looked like over four billion years ago...
- Oldest Fragment of Earth Ever Found is Confirmed to be 4.4 Billion Years Old Tue, 25 Feb 14, 8:20amIf you thought that diamonds were forever, they have absolutely nothing on the zircon of Jack Hills, Australia. Professor of geoscience at the University of Wisconsin, John Valley has confirmed that this bit of Earth's crust...