MOUNT CLEVELAND

ABOUT MOUNT CLEVELAND

• Is also known as Cleveland Volcano
• 1,730 m (5,676 ft) high, and one of the most active of the 75 or more in the larger Aleutian Arc.
• Aleutian named the island after their fire goddess, Chuginadak, who they believed inhabited the volcano.
• Has erupted 22 times in the last 230 years.
• It's last eruption was in January of 2014

LOCATION OF MOUNT CLEVELAND

• Located at Chuginadak Island, Alaska, United States
• Located 490 km (304 mi) from the western end of the Aleutian Arc, a long volcanic chain extending off the coast of Alaska.

THE CAUSES FOR WHAT MAKES MOUNT CLEVELAND ERUPT

• Containing over 75 volcanoes, this volcanic arc occurs above the subduction zone where the Pacific Plate plunges under the North American plate.
• As the plate moves deeper into the earth, the increasing pressure results in the loss of volatiles, certain elements and compounds with low boiling points, from various hydrous minerals.
• One of those compounds is water; it's addition to the mantle wedge formed between the subducting and overriding plates lowers the melting point enough to allow magma to form.
• The melted material then rises to the surface and forms a volcano in this case, the Aleutian Arc.

HOW MOUNT CLEVELAND IS A STRATOVOLCANO

• Mount Cleveland is an almost symmetrical stratovolcano in the Islands of Four Mountains.
• Grew as explosive eruptions, effusion eruptions, and lahars built it layer by layer into a concave-up shave.

THE DIFFERENCE BETWEEN MAGMA & LAVA

• Magma is when something is still underground.
• Lava is after the volcano has erupted.

ACTIVE VS EXTINCT

• An active volcano is a volcano that has had at least one eruption during the past 10,000 years.
• An extinct volcano has not had an eruption for at least 10,000 years and is not expected to erupt again in a comparable time scale of the future.