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Author Question: Is carbon-14 an appropriate isotope for dating the metamorphic rocks at the bottom of the Grand ... (Read 88 times)

tfester

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on: Jul 14, 2018
Is carbon-14 an appropriate isotope for dating the metamorphic rocks at the bottom of the Grand Canyon? Explain.
 
  What will be an ideal response?

Question 2

After describing India's future potential energy resources, evaluate which seems to be the most promising.
 
  What will be an ideal response?


allisonblackmore

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

Answer: No, it's not. The rocks at the bottom of the Grand Canyon are igneous and metamorphic, and they are also really, really old. Carbon-14's usefulness is limited to living things (which consume carbon-14 every time they photosynthesize or eat) from the relatively recent past (because carbon-14 has such a short half-life, it decays very quickly over geologic time).

Answer to Question 2

Answers should include coal, oil, nuclear, hydroelectric, and imported sources.


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