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Author Question: Which isotopes are most appropriate for dating formations from the following ages: (a) the early ... (Read 88 times)

ashley

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on: Jul 29, 2018
Which isotopes are most appropriate for dating formations from the following ages: (a) the early Precambrian; (b) the Mesozoic; (c) the late Pleistocene?
 
  What will be an ideal response?

Question 2

The process where an element spontaneously changes into a different element (transmutation) by a change in the nucleus of an atom is called
 
  A) radiometric dating.
  B) radioactive decay.
  C) radiometric decay.
  D) none of these


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cuttiesgirl16

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: For the early Precambrian, use uranium-238. For the Mesozoic, use uranium-235 (uranium-238 will also work but is not as precise). For the late Pleistocene, carbon-14 is the only reasonable isotope to use.

Answer to Question 2

Answer: B


ashley

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Reply 2 on: Jul 29, 2018
Excellent

debra928

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Reply 3 on: Yesterday
:D TYSM

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