Intro To Geology CH 6

What do we know about the main volcanoes in the Cascade Range?

Nearly all of the large Cascade volcanoes have erupted in the last 4,000 years.

The most damaging type of eruption that occurred at Mount Pelée, Martinique was:

One or more pyroclastic flows hit the city of St. Pierre.

Which of the following is NOT true about flood basalts?

They are fed from large interconnected composite volcanoes.

Which of the following is NOT true about shield volcanoes in the landscape?

They are large mountains with steep slopes.

Which of the following is common in lava flows associated with scoria cones?

a and b only

Which of the following is least likely to be a volcano?

a hill capped by volcanic rocks

What type of volcanic eruption is shown in this photograph?

a pyroclastic column

Which of the following sites near a volcano might be relatively less dangerous?

a site on a ridge as opposed to a site in a valley

What type of eruption formed this flow-banded rhyolite?

a viscous lava flow

Which of the following are dangerous aspects of composite volcanoes?

all of the above

What type of material likely composes this volcano?

all of these

What types of rocks would be common in a composite volcano?

all of these

Which of the following activities is NOT used to monitor volcanoes?

all of these are used to monitor volcanoes

The main hazard of an eruption that forms a large caldera is:

burning, building collapse, and suffocation from an eruption column and pyroclastic flows

Which of the following hazards is probably NOT associated with this volcano?

destruction by fast-moving lava

Which of the following is NOT a characteristic of a volcanic dome?

they are one of the largest types of volcanoes

Which of the following rock types is NOT characteristic of volcanic domes?

vesicular basalt with very large holes from dangerous gas