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Author Question: Geology's best tool for establishing absolute geologic time is a. index fossils. b. radiometric ... (Read 108 times)

tuffie

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on: Jul 28, 2018
Geology's best tool for establishing absolute geologic time is
 a. index fossils.
  b. radiometric dating.
  c. the principle of superposition.
  d. the principle of cross-cutting relationships.

Question 2

Starting with a sample of pure parent radionuclide, what would be the ratio of the parent radionuclide to its daughter after two half-lives have elapsed?
 a. 1 to 1
  b. 1 to 2
  c. 1 to 3
  d. 1 to 4


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Ddddd

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

c


tuffie

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Reply #2 on: Jul 28, 2018
Thank you!


Ddddd

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Reply #3 on: Jul 28, 2018
Always glad to help...


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