The plates of the Earth's crust perform complicated movements that can be attributed to quite simple mechanisms. That is the short version of the explanation of a rift that began to tear the world ...

Using computer technology to create three-dimensional models of the earth's mantle, Purdue's Scott King has found evidence that some dramatic features of the earth's surface could be the result of ...

UNIVERSITY PARK, Pa. — The Earth’s crust continued a slow process of reworking for billions of years, rather than rapidly slowing its growth some 3 billion years ago, according to a Penn State-led ...

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.