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Author Question: How old is the oldest known mineral, a zircon crystal, on Earth? A) 13.7 billion years old B) ... (Read 34 times)

gbarreiro

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on: Jul 15, 2018
How old is the oldest known mineral, a zircon crystal, on Earth?
 
  A) 13.7 billion years old
  B) 4.6 billion years old
  C) 4.4 billion years old
  D) 2.657 billion years old

Question 2

Where is the oldest known rock on Earth located?
 
  A) Ural Mountains, Russia
  B) Slave Craton, Alberta, Canada
  C) Gobi Desert, Mongolia
  D) Dharwar Craton, India


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Joc

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

Answer: C

Answer to Question 2

Answer: B


gbarreiro

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Reply 2 on: Jul 15, 2018
Great answer, keep it coming :)

cici

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Reply 3 on: Yesterday
Excellent

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