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Author Question: What distinguishes a huge block of ice from a glacier? What will be an ideal ... (Read 39 times)

Arii_bell

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on: Jul 29, 2018
What distinguishes a huge block of ice from a glacier?
 
  What will be an ideal response?

Question 2

What is the difference between a roche moutonnee and a drumlin?
 
  What will be an ideal response?


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bubulittle310@msn.cn

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: Ice does not become a glacier until it moves under its own weight. This occurs when the ice mass reaches a critical thickness of approximately 50 meters and the weight of the overlying ice causes the ice at the base to deform plastically and flow downslope.

Answer to Question 2

Answer: Both can reveal the direction of ice flow. They differ in how they formed. A roche moutonnee is an erosional featureeroded out of bedrock by continental glaciation, and a drumlin is a depositional feature formed of glacial till.


Arii_bell

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Reply #2 on: Jul 29, 2018
Thanks


bubulittle310@msn.cn

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Reply #3 on: Jul 29, 2018
Welcome :)


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