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Author Question: Radiometric dating is based on A) decay of uranium-238 to lead-206. B) sequence of rocks and the ... (Read 112 times)

bobbie

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on: Jul 29, 2018
Radiometric dating is based on
 
  A) decay of uranium-238 to lead-206.
  B) sequence of rocks and the relative position of one layer to another.
  C) proportions of radioactive isotopes and their decay products.
  D) the half-life of radioactive atoms.

Question 2

What type of igneous formation would agree with the principle of superposition?
 
  What will be an ideal response?


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jjorrostieta

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

Answer: C

Answer to Question 2

Answer: Lava flows. When volcanoes or fissures erupt, lava flows outward; with each eruption new lava flows on top of older lava flows. Although magma also flows, magma can intrude between existing layers.


bobbie

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Reply 2 on: Jul 29, 2018
Wow, this really help

deja

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Reply 3 on: Yesterday
:D TYSM

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