A _________ is a volcanic depression much larger than the original crater, formed when the volcano collapses into a vacated magma chamber.
A) vent
B) caldera
C) basin
D) ring dike
E) crater

Question

Quizplus · Accepted Answer

A caldera is a large volcanic depression formed by the collapse of a volcano following the depletion of magma in the underlying magma chamber. This can occur gradually or rapidly, and can result in a depression much larger than the original crater. A vent is an opening in the Earth's surface that allows magma and gases to escape, a basin is a low-lying area where water and sediments collect, a ring dike is a circular intrusion of magma that can be seen when a volcano has been eroded, and a crater is a depressed area at the summit of a volcano.

A _________ Is a Volcanic Depression Much Larger Than the Original