Which Best Describes a Caldera

question 46

Multiple Choice

Which best describes a caldera?

• A) a collapse pit less than 1 km2 on the summit of a volcano
• B) a small, steep- sided, volcanic depression bored out by an eruptive plume
• C) a large depression hundreds of km across full of volcanic deposits
• D) a large circular volcanic depression caused by collapse after a large scale, explosive felsic eruption

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