Mount Saint Helens

by Anna Cerami and Sarah Chagares

What is Mount Saint Helens?

Mount Saint Helens is a stratovolcano located in the United States. Mount Saint Helens is 50 miles northeast of Portland, Oregon. Mount Saint Helens has also accounted for 57 deaths, due to its strong and dangerous eruptions. It is located on the North American plate, and is near a convergent plate boundary. Furthermore, it is the most active volcano in the Cascade Range.

Plate Tectonics

The Juan de fuca and the North American Plate cause Mt. St. Helens to form. These are convergent plate boundaries, the Juan de fuca plate subducted underneath the North American plate.

Effects of the Volcano

Type of Volcano

Mount Saint Helens is a stratovolcano. It releases solid extrusions of smooth sided lava, known as spines. Also, pyroclastic eruptions