Plate tectonics Kattenhorn and Prokter think this phenomenon of one plate sliding under another, which is known as subduction, is the most likely explanation for the disappearing puzzle piece.

The 8.7 magnitude quake, followed by a 8.2 magnitude aftershock, could signal the formation of a new plate boundary under the Earth. While not the largest earthquakes ever recorded, the two quakes ...

Just south of Alaska, the Pacific plate is sliding underneath the North American plate, an area called the subduction zone. That’s why the state is highly seismic, Blakeman tells The Verge .

This is because of plate tectonics. ... where the Caribbean Plate is slowly sliding underneath Puerto Rico. RELATED: Monday's earthquake was likely an aftershock from the 2011 Virginia quake ...

The estimate is 50% of plate tectonic movement is driven by this heat, and about 20 terawatts of heat flows between the core and the mantle. That's just slightly more than the average total power ...

It lies on the boundary of the Nazca and South American tectonic plates. ... The jerking movement of a sliding plate causes a release of energy, some of which shudders through the crust, ...