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Traces of Earth's original crust found in Canadian Shield

CBC.ca Sunday, 19 March 2017 ()
Researchers have found traces of Earth's crust in the Canadian Shield dating back 4.2 billion years, when our planet was in its infancy.
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News video: Remnants Of Earth's Original Crust Preserved In Continents

Remnants Of Earth's Original Crust Preserved In Continents 00:51

New research suggests that remnants of Earth's original crust are preserved within the continents. Researchers reported that lingering fragments also indicate that plate tectonics began relatively late in Earth's history. A recently published study analyzed ancient continental rock from Canada that...

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