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The mountain collapses into an emptied magma chamber

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Q: A caldera is a depression in a volcanic mountain A caldera may form when?
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What is the Oregon Lake Caldera or Volcanic neck?

It would have to be a caldera. A caldera is a depression in the ground, so it is logical that one would contain a lake (and some do). A volcanic neck is a pillar or mountain of rock that solidified inside a volcano, and so could not form a lake.


A basin shaped volcanic depression?

A caldera.


A basin-shaped volcanic depression?

I actually had problems with this question on my crossword puzzle. The answer is actually a caldera. ---------------------------------- A volcanic crater would also be a correct answer.


When a volcano collapses what does it form?

When a volcano collapses, it can form a crater or caldera. A crater is a bowl-shaped depression at the top of the volcano, while a caldera is a much larger depression that can form when the center of the volcano collapses. Both features can result in a large, empty space left behind by the volcanic activity.


What is a circular depression formed by an explosion or a collapse at a volcanic vent?

The rare phenomenon you're talking about is called a calderas.Caldera is the term given to large depressions associated with volcanoes that form when volcanoes explode or collapse into the earth.


What shape of volcano is Krakatoa?

Krakatoa is a volcanic island with a caldera volcano. The caldera was formed during the catastrophic eruption in 1883, which caused the island to collapse and form a large caldera. Today, Krakatoa is composed of three main volcanic cones within the caldera.


If the top of a volcano is blown off what kind of lake can it form?

In cases where a volcanic mountain erupts, leaving behind part of its neck, to form a kind of depression or hollowed remnant called a Crater. When water gets into such cavity and becomes traped and stagnant it leads to a "Cratic Lake" mostly known as a "Caldera".


When is caldera form?

When a large explosive volcanic eruption destroys most of the volcano, the resulting large crater is called a caldera.


How is a crater lake different from a caldera?

A caldera is the depression atop a volcanic landform, either active or dormant. It can be very large and becomes less visible after a long period of erosion. A crater lake forms when the surface of the caldera is impermeable rock, and there is no way for precipitation to drain. On high mountains with glaciers, small lakes can form seasonally from meltwater.


How Explain the formation of a volcanic landforms that can result when a volcano uses up the magma in its magma chamber?

When a volcano uses up the magma in its chamber, the roof of the chamber can collapse, leading to the formation of a large depression called a caldera. This caldera can later fill with water to form a crater lake. Alternatively, the collapse can result in the formation of smaller depressions known as volcanic craters.


Compare volcanic crater to a caldera?

A volcanic crater is a circular depression at the summit of a volcano, typically formed by a volcanic eruption. A caldera is a larger, more broad and deep volcanic depression often formed by the collapse of the emptied magma chamber beneath a volcano after a large eruption, creating a basin-shaped feature. Calderas are typically significantly larger than volcanic craters.


How does a caldera forms?

A caldera is a large depression in a volcano. Most calderas form in one of two ways: by collapse of the top of a composite volcano after the magma chamber is drained.