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Author Question: Why are the oldest continental rocks on the order of 4 billion years old? What will be an ideal ... (Read 77 times)

APUS57

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on: Jul 13, 2018
Why are the oldest continental rocks on the order of 4 billion years old?
 
  What will be an ideal response?

Question 2

A ________ is a break in the Earth's surface or crust with horizontal or vertical displacement.
 
  Fill in the blank(s) with the appropriate word(s).


zacnyjessica

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

Answer: Earth's age is 4.6 billion years. No rocks are as old as the Earth because of the recycling caused by plate tectonics. The oldest rocks are in small areas that have somehow not been subducted over or made into another type of rock by the rock cycle.

Answer to Question 2

Answer: fault


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