Volcanoes!

Black Peak• Location: Alaska Peninsula

• Hight: 3,386 feet

• Extinct

• Last eruption: unknown

• Major features: There is a caldera at the eastern edge, this caldera contains two small lakes.

• Type: stratovolcano

Carlisle

• Location: Aleutians

• Hight: 5,315 feet

• Dormant

• Last eruption: November 16, 1987

• Major features: This volcano has yet to be studied for major features.

• Type: stratovolcano

Douglas • Location: Alaska Peninsula

• Hight: 7,021 feet

• Active

• Last eruption: Never

• Major features: The summit has a crater with a small lake. Douglas has an active fumarole on the north side of the crater.

• Type: stratovolcano

Gilbert • Location: Aleutians

• Hight: 2,684 feet

• Extinct

• Last eruption: Non eruptive activity on April 18, 1947

• Major features: The northern flank is steep and is heavily eroded.

• Type: possibly a stratovolcano

Wrangell • Location: Wrangell Volcanic Field

• Hight: 14,163 feet

• Dormant

• Last eruption: March 26, 1930

• Major features: There is a caldera at the summit.

• Type: shield volcano

Glossary • Vent: An opening in the earths surface

through which magma erupts or volcanic gases are emitted.

• Crater: A steep-sided, usually circular depression formed by either explosion or collapse at a volcanic vent.

• Fumarole: A small volcanic vent from which gases and vapors are emitted.

Glossary • Stratovolcano: A steep-sided volcano, usually

conical in shape, built of lava flows and fragmental deposits from explosive eruptions.

• Shield Volcano: A gently sloping volcano in the shape of a flattened dome and built almost exclusively of lava flows.

• Caldera: A large crater formed by collapse or subsidence of the ground surface following a great eruption.

Glossary

• Dormant: A volcano that hasn't erupted for a long time, but can still erupt.

• Active: A volcano that has either erupted recently or is about to.

• Extinct: A volcano that hasn't erupted in a really long time and will not erupt again.