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Author Question: Which of the following is an example of a trace fossil? A) petrified wood B) fossil dung C) ... (Read 378 times)

lilldybug07

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on: Jul 14, 2018
Which of the following is an example of a trace fossil?
 
  A) petrified wood
  B) fossil dung
  C) spider trapped in amber
  D) carbonization of a bee

Question 2

A sandstone is found to overlie a shale. The shale contains a volcanic ash layer that has been radiometrically dated to 84 million years ago. Both the shale and the sandstone are cut by a pluton of gabbro that has been dated to 60 million years old.
 
  How old is the sandstone layer?
  A) between 84 and 60 million years old
  B) older than 84 millions years old
  C) younger than 60 million years old
  D) more information is needed to constrain the age


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CourtneyCNorton

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

Answer: B

Answer to Question 2

Answer: A


lilldybug07

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Reply 2 on: Jul 14, 2018
Gracias!

yeungji

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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