Mount Mazama is a composite volcano. It is made of multiple layers of lava flows and fragmented debris. Mount Mazama had a violent eruption around 5677 B.C., which caused the main height of the volcano to collapse and cr... More »

www.reference.com Science Earth Science Volcanoes

Mount Mazama last erupted in 2290 B.C. The eruption was so severe that the volcano collapsed, forming a caldera. This means that during the eruption, the volcano sank into the ground, creating a giant crater. The crater ... More »

A Cascade Range volcano is one that is part of a series of mountains in western North America that includes an arc of volcanoes. The Cascade Range extends from British Columbia through Washington and Oregon to northern C... More »

www.reference.com Science Earth Science Volcanoes

Mount Mazama last erupted in 2290 B.C. The eruption was so severe that the volcano collapsed, forming a caldera. This means that during the eruption, the volcano sank into the ground, creating a giant crater. The crater ... More »

Mount Vesuvius is a volcano that is roughly 4,300 feet tall, according to About.com's Ancient/Classical History expert. It is located in Italy, near the Bay of Naples. More »

Mount Vesuvius, a volcano off the west coast of Italy, is one of the only active volcanoes on Europe's mainland. It is part of the Campanian volcanic arc, which rests on a tectonic boundary where the African plate is bei... More »

www.reference.com Science Earth Science Volcanoes

Mount Vesuvius is an Italian volcano that first erupted in A.D 79, burying towns and residents of Stabiae, Pompeii and Herculaneum. Mount Vesuvius is the only active volcano on Europe's mainland, and it has produced some... More »