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Author Question: How are resources related to geologic structures? What will be an ideal ... (Read 15 times)

dejastew

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on: Jul 16, 2018
How are resources related to geologic structures?
 
  What will be an ideal response?

Question 2

Judge the following sentence according to the criteria given below. Earth is long overdue for a magnetic reversal because during the past 15 million years Earth's magnetic field reversed every 200,000 years,
 
  on average, and the last reversal was 780,000 years ago.
  A) The assertion is correct but the reason is incorrect.
  B) The assertion is incorrect but the reason is correct.
  C) The assertion and the reason are both correct, and the reason is valid.
  D) The assertion and the reason are both correct, but the reason is invalid.
  E) Both the assertion and the reason are incorrect.


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jasonq

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: Gas is less dense than oil, and oil is less dense than water. As a result of this density contrast, oil and natural gas migrate upward through pores toward Earth's surface unless impeded by low-porosity layers, which trap the oil and gas. Anticlines and faults form common traps for oil and natural gas. The oil and gas migrate upward to the highest point below a nonporous layer along the hinge line of an anticline and are trapped beneath reverse and thrust faults where low-porosity layers are displaced on top of high-porosity layers. Metal-rich mineral resources commonly form along joints and faults where warm fluids with high concentrations of metal ions readily flow and cool to precipitate metallic minerals.

Answer to Question 2

Answer: C


dejastew

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

ultraflyy23

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Reply 3 on: Yesterday
Excellent

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