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Author Question: What two types of volcanic features result from volcanism above a mantle plume? How are hot spots ... (Read 32 times)

cdr_15

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on: Jul 15, 2018

What two types of volcanic features result from volcanism above a mantle plume? How are hot spots
  related to plate boundaries? What will be an ideal response?



Question 2

What is a mantle plume, and what causes one to erupt? What will be an ideal response?


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amandanbreshears

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

Mantle plumes are responsible for linear chains of volcanoes in the oceans, as seen in the Hawaii-
Emperor Chain. They are also responsible for flood basalts, vast flat-lying areas of overlapping lava
flows. Hot spots are not related to plate boundaries; most cause intra-plate volcanism.



Answer to Question 2

A mantle plume is a cylindrical plume of hot rock that rises through the mantle, most likely from the
core-mantle boundary. As the rock rises, the pressure on it declines, and the melting temperature of the
rock decreases. Melting begins and creates magma.



cdr_15

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Reply #2 on: Jul 15, 2018
Thank you


amandanbreshears

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Reply #3 on: Jul 15, 2018
No problemo


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