Add Yahoo as a preferred source to see more of our stories on Google. To understand the geologic processes roiling beneath the Earth’s crust, it helps to have samples of what exactly is going on down ...

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 ...

Here’s what you’ll learn when you read this story: Mantle plumes are important geologic processes—they interact with plate tectonics, create rich mineral deposits, and even contribute to mass ...