(jacus/iStock/Getty Images Plus) Hundreds of millions of years ago, our world looked very different from the way it does ...

Tectonic map of the Earth. The first continental crust on Earth formed more than 3 billion years ago. Likely the first fragments formed by partial melting and re-crystallization of the primordial ...

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Research led by Jesse Reimink, assistant professor of geosciences at Penn State, suggests that the Earth's crust continued a slow process of reworking for billions of years, rather than rapidly ...

Scientists have discovered a long hidden plate boundary near the east coast of Africa that dates back about 180 million years ...

The Nazca Plate is creeping under the South American Plate. Both crustal plates are locked. Depending on the water pressure in various depths, slipping occurs with potentially devastating effects.