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When a very large volume of magma is erupted, the overlying rocks may collapse. The collapse produces a hole or depression at the surface called a caldera.

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What is formed when the top of a volcano collapses into a partially emptied magma chamber?

what happens is that it forms a caldera


Is caldera considered a rock?

No. A caldera is a type of geologic structure formed by the collapse of a volcano.


A large crater formed by the collapse at an everlying volcanic cone?

This is known as a Caldera.


Would the word Caldera be capitalized?

If you are talking about the caldera formed by a volcano collapsing then no it shouldn't be capitalized.


When was Valles Caldera created?

The Valles Caldera formed in a volcanic eruption about 1.25 million years ago.


What is the difference between a crater and a caldera?

A caldera is a large depression formed at the summit of a volcano, left behind by the excavation of magma. A crater is formed by an explosion or impact.


What is a sentence for caldera?

After its massive eruption in 1883, the volcanic island of Krakatoa collapsed into a caldera.


Is mount st Helen's caldera vent or craters?

Mount St. Helens features a caldera, which was formed during the catastrophic eruption in 1980. The caldera is a large depression resulting from the collapse of the volcano after the explosive eruption, and it is distinct from craters, which are typically smaller openings formed by volcanic activity. Within the caldera, there are also smaller craters and vents that have formed due to subsequent volcanic activity.


Is a caldera formed from a hot spot?

No, but its host volcano may be.


When did long valley caldera erupt?

Long Valley Caldera has erupted several times. The one that actually formed the caldera took place 760,000 years ago, but after that there were more 500,000, 300,000, and 100,000 years ago.


What is a large circular depression formed at the top of a volcano called?

Caldera.


Formed when magma chamber empties and its roof collapses?

Its called a "caldera".