GLY3163 Module 5 Quiz 8 Katmai

Kodiak Island is part of the accretionary prism from Pacific subduction.

True

The Aleutian volcanoes are part of the Pacific Ring of Fire.

True

Katmai and other volcanoes of the Aleutian Range occur in what type of tectonic setting?

Continental volcanic arc

The composite volcanoes at Katmai are most similar to volcanoes in what other National Park?

Crater Lake

The collapse of the summit crater of Katmai was caused by the eruption of Mt. Martin in 1912.

False

The Valley of Ten Thousand Smokes was formed after the eruption of what volcano?

Novarupta

Which tectonic plate is subduction under southern Alaska resulting in the volcanoes at Katmai National Park?

Pacific

The welded ash tuff that covered the Valley of Ten Thousand Smokes is from what type of magma?

Rhyolite