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Author Question: What is the primary reason for the elevated position of the oceanic ridge system? What will be an ... (Read 116 times)

EY67

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on: Jul 14, 2018
What is the primary reason for the elevated position of the oceanic ridge system?
 
  What will be an ideal response?

Question 2

Although oceanic ridges can be as tall as some mountains on the continents, list some ways that oceanic ridges are different.
 
  What will be an ideal response?


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guyanai

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Reply #1 on: Jul 14, 2018
Answer to Question 1

The primary reason for the elevated position of the ridge system is that newly created oceanic lithosphere is hot and therefore less dense than cooler rocks of the deep-ocean basin.

Answer to Question 2

Oceanic ridges are as high as some mountains on the continents, but the similarities end there. Whereas most mountain ranges on land form when the compressional forces associated with continental collisions fold and metamorphose thick sequences of sedimentary rocks, oceanic ridges form where upwelling from the mantle generates new oceanic crust. Oceanic ridges consist of layers and piles of newly formed basaltic rocks that are buoyantly uplifted by the hot mantle rocks from which they formed.


EY67

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Reply #2 on: Jul 14, 2018
Thank you :)


guyanai

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Reply #3 on: Jul 14, 2018
Happy to help you


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