Answer:
The Aleutian Trench is a geological feature that forms the northern part of the Ring of fire. These are formed due to the sharing of a convergent plate boundary between the North American Plate and the Pacific plate.
Due to the convergence of these two plates, a subduction zone is formed where the denser oceanic plate is going down below the North American plate, that resulted in the formation of the trench above this zone of subduction.
A large number of volcanic islands, volcanoes and chains of volcanic arcs are formed around this region, that generates deep-focus earthquakes.
Thus, the area is undergoing constant tectonic activities.
