The theory states that Earth's outer shell is made up of huge slabs of rock called plates that glide over the planet's inner layer, or mantle. As these plates shift, they sometimes collide with ...

The Earth’s crust is divided into large, rigid tectonic plates that move over time ... which once covered 15 million square ...

The Pacific Coast is tiptoeing around not one but two of the largest seismic triggers of the region’s modern history.

It is highly prone to earthquakes due to its location on the boundary of the Indian and Eurasian tectonic plates.