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Sea floor records ancient Earth

August 31, 2018
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A sliver of four billion year old seafloor shows the earliest known evidence of plate tectonics on Earth. (BBC News — 24 March, 2007)
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Scientists have identified an expanse of rock in Greenland as a remnant of Earth’s crust dating back 3.8 billion years, a finding that shows the dynamic geological process called plate tectonics was occurring early in our planet’s history. (CNN — 2 hours ago)
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Scientists have identified an expanse of rock in Greenland as a remnant of Earth’s crust dating back 3.8 billion years, a finding that shows the dynamic geological process called plate tectonics was occurring early in our planet’s history. (MSNBC — 23 March, 2007)
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