A caldera is a large depression formed when a volcano erupts and collapses. After the magma chamber empties during an eruption, the support that the magma provided to the ground above is gone, causing the ground to collapse and form a large, basin-like depression.

Solved

A Caldera Is a

Question 166

Multiple Choice

A caldera is a

A) crater formed by collapse at the summit of a volcano.
B) valley formed by the separation of two crustal plates.
C) long, sinuous valley carved by the flow of molten rock.
D) depression formed by the impact of an asteroid on a planetary surface.

Correct Answer: