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Author Question: What material makes up the flanks of cinder cones? Why does magma rising through the conduit of a ... (Read 43 times)

karen

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on: Jul 16, 2018
What material makes up the flanks of cinder cones? Why does magma rising through the conduit of a cinder cone volcano often break through the side of the volcano and flow down the flank?
 
  What will be an ideal response?

Question 2

How does a volcanic neck form? What happens to the rest of the volcano that originally surrounded it?
 
  What will be an ideal response?


ririgirl15

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: Cinder cone volcanoes are composed of ejected lava fragments that are not strongly consolidated. Because the cone does not have cohesive strength, magma can force its way through.

Answer to Question 2

Answer: When a volcano becomes inactive, lava remaining in the conduit will solidify. Over time, weathering and erosion will remove the surrounding volcanic structure, leaving behind the solidified lava plug, which is more resistant.


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