Magma from source to surface.

Illustration showing magma formation and movement to surface

Detailed Description

Location of magma formation, accumulation, and storage beneath Mount St. Helens (locations are inferred from scientific data)> Magma forms above the subducting slab of oceanic crust and accumulates at the base of Earth's rigid crust before collecting ain a storage zone 13 kilometers (8 miles) beneath the volcano prior to eruption.


Image Dimensions: 609 x 900

Location Taken: US