* Volcanic Arc: The subduction process causes melting of the upper mantle, resulting in the formation of volcanoes. This leads to the creation of the Cascade Range, which includes Mount St. Helens, Mount Rainier, and Mount Hood.
* Trench: The point where the Juan de Fuca plate descends beneath the North American plate forms the Cascadia Subduction Zone and the Juan de Fuca Trench.
* Forearc Basin: The area between the trench and the volcanic arc is known as the forearc basin. This basin is filled with sediments that are scraped off the subducting plate and eroded from the volcanic arc.
* Earthquake Zone: The movement of the plates along the subduction zone generates earthquakes, including some of the most powerful earthquakes in the world.
So, in summary, the subduction of the Juan de Fuca plate beneath the North American plate has formed a subduction zone with its associated features like volcanic arcs, trenches, forearc basins, and earthquake zones.
