What is a caldera? How are they formed?

Answer 1

A caldera is the landform that forms after the structural support for a volcano has weakened and the surface of the volcano has collapsed.

A caldera is the landform that exists after the structural support for a volcano has weakened and the surface of the volcano has collapsed. If enough magma is expelled from a volcano, the walls of the volcano collapse in on themselves and what remains is the caldera, a sort-of sinkhole.

Just because a volcano has collapsed and formed a caldera does not mean that all activity has stopped. There may still be magma present under the caldera.

Crater Lake National Park in Oregon, US is an ancient caldera. This site is no longer active and all magma was expelled.

Note: a crater forms when a volcano explodes outward but a caldera forms when a volcano collapses inwards.

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Answer 2

A caldera is a large volcanic crater formed by the collapse of a volcano following an eruption. Calderas can form through various processes, including the emptying of magma chambers during eruptions, leading to the collapse of the overlying rock. Subsequent erosion and other geological processes can modify the shape of the caldera over time.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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