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Author Question: Which is one of four processes that produces different varieties of igneous rocks? A) Single ... (Read 37 times)

V@ndy87

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on: Jul 16, 2018
Which is one of four processes that produces different varieties of igneous rocks?
 
  A) Single source rocks melt to form different types of magma.
  B) Magma in a volcano changes mineral composition as soon as it is ejected.
  C) Magma stays the same after assimilating nearby rocks.
  D) Magma can change its composition by assimilating nearby rocks.

Question 2

How do igneous products form and why do geologists study these processes?
 
  What will be an ideal response?

Question 3

Briefly describe what makes volcano types different from one another and give an example of a type.
 
  What will be an ideal response?


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prumorgan

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

Answer: D

Answer to Question 2

Please could you help me with another one. Thank you

Answer to Question 3

Answer: Different magma compositions and types of eruptions, and varying proportions of lava flows to pyroclastic deposits determine the sizes and shapes of volcanoes. Shield volcanoes are small to giant volcanoes composed of many thin and widespread basaltic lava flows. The definitive shield shape is characterized by gentle slopes typically less than 15 degrees. They are active for centuries to a few million years.


V@ndy87

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Reply #2 on: Jul 16, 2018
Thank you :)


prumorgan

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Reply #3 on: Jul 16, 2018
Happy to help you


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