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Author Question: What factors influence the rate of glacial erosion? What will be an ideal ... (Read 37 times)

2125004343

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on: Jul 15, 2018
What factors influence the rate of glacial erosion?
 
  What will be an ideal response?

Question 2

The Zone of Fracture in a glacier is found in the uppermost 50 m of glacial ice. Explain why ice fractures above this depth, but not below.
 
  What will be an ideal response?


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duy1981999

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: 1) Rate of glacial movement, 2) thickness of glacial ice, 3) shape, abundance, and hardness of rock fragments at the base of the glacial, and 4) erodibility of bedrock beneath the glacier.

Answer to Question 2

Answer: Ice in the upper 50 m of a glacier is cold and brittle, hence the breakage. However, below that point, the ice is under a great deal of pressure. This pressure allows the ice to move in a ductile manner, which seals off any fractures.


2125004343

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Reply 2 on: Jul 15, 2018
Excellent

upturnedfurball

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Reply 3 on: Yesterday
Gracias!

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