New research uncovers continental crust emerged 500 million years earlier than thought

The first emergence and persistence of continental crust on Earth during the Archaean (4 billion to 2.5 billion years ago) has important implications for plate tectonics, ocean chemistry and biological evolution. This happened about a half-billion years earlier than previously thought, according to new research being presented at the EGU General Assembly 2021.

from Phys.org - latest science and technology news stories https://ift.tt/3sQyPZV

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