GPH 211 41_1 Process-Form Lab Volcanoes Question 3

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Arizona State University *

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Geology

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Dec 6, 2023

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Question 3 1 / 1 pts What is this volcanic landform ( N 14.955731, W 24.375709 )? Zoom out so that you can see the entire Island of Fogo. The landform of interest is the very large depression that occupies the top fifth of this island. composite volcano Correct! caldera rhyolite dome crater Yes. This is a caldera. As discussed in the presentation, craters form by the force of the eruption blast. You can see the crater on the top of Pico (the volcano that is rebuilding). However, the very large depression (caldera) is made by collapse because so much lava evacuated the lava chamber that the earth just subsided (dropped down). This volcano lay dormant for twenty years, but has recently reactivated and there are ongoing eruptions that you can see by click on on this website: http://earthobservatory.nasa.gov/IOTD/view.php?id=84987 Links to an external site.
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