J., Gordon, R. G. & Engebretson, D. C. Mesozoic aseismic ridges on the Farallon plate and southward migration of shallow subduction during the Laramide orogeny. Tectonics 3, 121–132 (1984).

Once part of a massive subduction zone along America’s west coast, the Farallon plate slid beneath the North American plate for tens of millions of years. Around 20 million years ago ...

This slow geological movement forced the Farallon plate under North America, a process called subduction. Much of the Farallon plate got pushed down into the mantle, the flowing layer below the ...

The Farallon plate and the North American plate once formed a subduction zone along the continent's west coast, with the former sliding beneath the latter and recycling its material into the mantle.