Location of magma formation, accumulation, and storage beneath Moun...
By Volcano Hazards Program
1905 (approx.)
Detailed Description
Magma forms above the subducting slab of oceanic crust and accumulates at the base of Earth's rigid crust before collecting in a storage zone 13 km (8 mi) beneath the volcano prior to eruption.
Related
Geologic History Summary for Mount St. Helens
Mount St. Helens, located in Washington State, is the most active volcano in the Cascade Range, and it is the most likely of the contiguous U.S. volcanoes to erupt in the future.
Related
Geologic History Summary for Mount St. Helens
Mount St. Helens, located in Washington State, is the most active volcano in the Cascade Range, and it is the most likely of the contiguous U.S. volcanoes to erupt in the future.