Which of the following best explains how a tephra deposit forms?
A. As magma is forced upward, it travels horizontally through cracks in the crust, solidifying into either long, horizontal shafts or saucer-shaped formations.
B. Airborne ash and rocks from a volcanic eruption remain suspended in the air for a long time before eventually settling to the ground in a new location far from the volcano.
C. Highly fluid lava erupts from an active volcano and flows across great distances, slowly solidifying into a flat surface.
D. As magma is forced upward, it travels through vertical
cracks in the crust, spreading outward and pushing up an overlying layer, creating a dome.
Airborne ash and rocks from a volcanic eruption remain suspended in the air for a long time before eventually settling to the ground in a new location far from the volcano. [ -best explains how a tephra deposit forms.
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Janet17|Points 42347|
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Asked 7/9/2019 5:55:29 PM
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