How Is A Deep Sea Trench Formed - Web trenches are formed by subduction, a geophysical process in which two or more of earth's tectonic plates. Web the deepest trench in the crust of atlantic ocean is the puerto rico trench, which is 8,600 meters (28,232 feet) deep, and its.
Web the deepest trench in the crust of atlantic ocean is the puerto rico trench, which is 8,600 meters (28,232 feet) deep, and its. Web trenches are formed by subduction, a geophysical process in which two or more of earth's tectonic plates.