Even when a volcano is not in an active eruptive phase, _____ will vent at the surface.

Oceanic crust is blue, continental crust is orange, mantle plumes are noted in this diagram. Given the plate tectonic setting, what is the most likely composition of the volcanoes at location A?

Solidified fragments of volcanic material ejected into the air are called

Which of the following is LEAST likely to signal an impending volcanic eruption?

The modified Mercalli scale is based on measures of: Choose all that apply.

Given the ages of the different rock units that you see here, what is the age of the shale atop the volcanic ash?

Eruptions of rhyolite lava tend to be more explosive than basaltic and andesitic lavas because rhyolite lavas

The Sahara is located about 30 degrees latitude from the equator. What type of desert is the Sahara?

Given the ages of the different rock units that you see here, what is the age of the Cretaceous sandstone?

Of the four types of subaerial volcanoes, ____________ usually consist of alternating layers of tephra and solidified lava.