A University of Illinois-led team has identified unexpected geophysical signals underneath tectonically stable interiors of South America and Africa. The data suggest that geologic activity within ...

Earth was a completely different planet more than 2.5 billion years ago. Little is known about this critical time when cratonic continental seeds formed; life emerged; and precious mineral resources ...

There are 35 large Archean cratons around the world that form the geologic core of tectonic plates. Because they’re located at the interior of plates, these landmasses often remain unaltered over the ...

Ancient, expansive tracts of continental crust called cratons have helped keep Earth's continents stable for billions of years, even as landmasses shift, mountains rise and oceans form. A new ...

In the course of billions of years continents break up, drift apart, and are pushed back together again. The cores of continents are, however, geologically extremely stable and have survived up to 3.8 ...

The first continents on Earth formed between 3 and 2.5 billion years ago. Geologists studying the oldest rocks found on Earth believe that partial melting, fueled by the heat released during the decay ...

Add Yahoo as a preferred source to see more of our stories on Google. Researchers have discovered that the North American continent is slowly losing rock from its underside in a process called ...

Stable parts of the Earth's crust may not be as immovable as previously thought. While much of the crust is affected by plate tectonic activity, certain more stable portions have remained unchanged ...

Geologists from Harvard University, Geoscience Australia and the Australian National Univer­sity are drawing up a map to show where mining companies should focus their search for the ores of metals ...