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New model suggests lost continents for early Earth

July 2, 2019 - General

A new radioactivity model of Earth’s ancient rocks calls into question current models for the formation of Earth’s continental crust, suggesting continents may have risen out of the sea much earlier than previously thought but were destroyed, leaving little trace.

Models for the distribution of crustal thickness in early Earth. The crust in the prevailing paradigm is mostly oceanic,
with some thin continental crust. The new model…

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Source: archeo

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