Volcanic Features of Saint Michael

The video discusses the volcanic activity in Alaska, focusing on the Saint Michael volcanic field. It highlights the presence of 86 active volcanoes, with a potential 87th yet to be discovered. The Saint Michael volcanic field, covering 502 square miles, has produced recent lava flows and maar craters. The video explores the volcanic history, including eruptions from 3.6 million years ago to recent times, and describes the geographic features and volcanic landforms in the region.

How many active or potentially active volcanoes are there in Alaska according to the U.S. Geological Survey?

• 88

• 86

• 85

• 87

What is the name of the volcanic field near the town of Saint Michael?

• Saint Peter volcanic field

• Saint Paul volcanic field

• Saint Michael volcanic field

• Saint George volcanic field

What geological feature is formed by highly explosive eruptions in the Saint Michael volcanic field?

• Maars

• Calderas

• Lava domes

• Cinder cones

When did volcanic activity begin in the Saint Michael volcanic field?

• 4 million years ago

• 3.6 million years ago

• 2.5 million years ago

• 1 million years ago

Which island was constructed through volcanic activity in the last 1 million years?

• Unalaska Island

• Saint Michael Island

• Stuart Island

• Kodiak Island

What is the name of the shield volcano that contributed to the formation of Saint Michael Island?

• Mount Redoubt

• Saint Michael Mountain

• Mount Saint Elias

• Mount Spurr

How far did the lavas from the eruptions of Saint Michael Mountain travel?

• 6 miles

• 3 miles

• 4 miles

• 5 miles

In the last 100,000 years, where have eruptions primarily occurred in the Saint Michael volcanic field?

• North of the islands

• South of the islands

• West of the islands

• East of the islands

What is the name of the group of cinder cones that produced a more extensive lava flow?

• The cousins

• The twins

• The sisters

• The brothers

Which volcanic feature is older than the two intact looking cinder cones in the Saint Michael volcanic field?

• The sisters

• The brothers

• The twins

• The cousins