Volcanoes

Shield volcanoes Shield volcanoes are formed by the eruption of low-viscosity lava which often flows a great distance. They are named for their wide, shield-like structures. Shield volcanoes do not usually create explosive eruptions.

Mauna Kea in Hawaii

Stratovolcanoes (or composite volcanoes) Stratovolcanoes are the type of volcanoes found in the Cascade Range, central Andes, Japan, and the Aleutian Islands. They are found at subduction zones. Chains form along the plate tectonic lines where the oceanic crust moves under the continental crust. They are characterized by steep profiles, and their explosive eruptions can be hazardous (Mt. St. Helens, Mt. Pinatubo).

Mt. Hood in Oregon

• Others

  • Cinder cones
  • Lava domes