Plate boundaries are where the action is. A large fraction of all earthquakes, volcanic eruptions, and mountain building occurs at plate boundaries. It is also where most of the people on Earth live.

NORFOLK, Va. — Fault lines are fractures or breaks in the Earth's crust where tectonic plates move past each other, often resulting in earthquakes. These geological features are classified into three ...

Given that all of the Hawaiian Islands were created by volcanic activity, it is somewhat surprising that only one of the islands possesses any active volcanoes. Why did the volcanoes that built the ...

Plate tectonics is the theory used to explain the structure of the Earth’s crust and many of the associated phenomenon. The rigid lithosphere is split into 15 major plates that slowly move on top of ...

The diagram below shows the structure of the earth. In geography, taking a slice through a structure to see inside is called a cross section. Continental plates are usually quite thick (between 35 to ...

New Yale-led research suggests how and when Earth came to develop one of its most distinct features — rigid tectonic plates — and why Venus, Earth’s twin-like neighbor, never has. “We think it all ...

Before I retired, I would often take school groups on tours of the HSU Geology Department’s seismograph. We’d start out in front of the drum on display in Van Matre Hall and talk about how ...

Investigating the causes and consequences of volcanoes and featuring case studies from the Canary Islands, The Democratic Republic of the Congo and Iceland. Below Earth’s surface, in the upper mantle, ...