Tectonic movement in the ocean or sfs sea-floor spreading, caused it
The circum-pacific belt (the ring of fire)
Yes mount saint Helen is a composite.
There are two plates that mount saint Helens lies on is Juan de Fuca and the North American plate
It is active.
what external forces are at work in mount saint helens
mount saint helen
United States
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Mount Saint Helen or, Mt. Saint Hellen :)
mount saint helen coloumbia plateau hawaiian island mount saint helen coloumbia plateau hawaiian island
The 3 plates, The Juan de Fuca plate, the Pacific Plate and the North American Plate collided and made mt st helens but i'm not sure what's happening currently with the plates....
count maint melon