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Author Question: End moraines continue to grow as long as the ice front remains stationary. Indicate whether the ... (Read 47 times)

vicky

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on: Jul 13, 2018
End moraines continue to grow as long as the ice front remains stationary.
  Indicate whether the statement is true or false

Question 2

What are lava domes? Provide one example. Explain under what circumstances they form and what type of magma is usually involved? Are their eruptions gentle or violent?


lorealeza

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Reply #1 on: Jul 13, 2018
Answer to Question 1

True

Answer to Question 2

Lava domes, also known as volcanic domes and plug domes, are steep-sided, bulbous mountains that form when viscous felsic magma, and occasionally intermediate magma, is forced toward the surface. Because felsic magma is so viscous, it moves upward very slowly and only when the pressure from below is great. Lava dome eruptions are some of the most violent and destructive.

Examples: Mount St. Helens and Mount Pele


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