<span>Erosion by rivers is a main valley-forming
process; other processes, such as movement of the earth's crust and
glaciers, also have an important part in some cases. The rate at which a
river deepens its valley depends on several factors.</span>
Yes it is very possible for it to occur since it could be one of the deadliest and most affective earthquakes which can occur at any time every 100 years
