Formation of Kerogen and Evolution of Organic Matter - CHE 513

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Questions and Answers

What is the color of kerogen?

  • Deep blue
  • Brownish black (correct)
  • Bright red
  • Dark green

Where is kerogen found?

  • In the atmosphere
  • In the source rock (correct)
  • In the oceans
  • In organic solvents

What is the relationship between kerogen and fossil fuel?

  • Kerogen represents an intermediate stage towards fossil fuel formation (correct)
  • Kerogen is the same as fossil fuel
  • Kerogen is used to produce fossil fuel
  • Kerogen is a byproduct of fossil fuel

What happens during the formation of kerogen?

<p>The first phase of fossil fuel formation is completed (D)</p> Signup and view all the answers

Which of the following substances is NOT part of kerogen's chemical composition?

<p>Silicon (A)</p> Signup and view all the answers

What is the diagenesis stage in the context of kerogen?

<p>A transformation process involving dissolution and recombination of constituent materials (A)</p> Signup and view all the answers

What is the name of the gas produced during Diagenesis?

<p>Methane (C)</p> Signup and view all the answers

At what stage does the H:C ratio decrease?

<p>Catagenesis (A)</p> Signup and view all the answers

What is the solid form organic matter undergoes evolution into?

<p>Coal (D)</p> Signup and view all the answers

Which gas is released from kerogen during Catagenesis?

<p>Petroleum (A)</p> Signup and view all the answers

At what level of organic matter evolution is biogenic methane produced?

<p>Diagenesis (A)</p> Signup and view all the answers

What type of bacteria are active in the reducing zone?

<p>Sulphate-reducing bacteria (D)</p> Signup and view all the answers

What compound is formed when free sulfur in the reducing zone reacts with Iron (II) hydroxide?

<p>Pyrite (B)</p> Signup and view all the answers

Which type of kerogen is rich in aliphatic compounds and oil prone?

<p>Type II (Liptic Origin) (D)</p> Signup and view all the answers

What is the origin of Kerogen Type III?

<p>High woody plants (C)</p> Signup and view all the answers

What does Thiobacillius do in the oxygenated zone?

<p>Produces hydrogen sulfide (C)</p> Signup and view all the answers

What is CH4 commonly referred to as?

<p>Thermogenic methane (D)</p> Signup and view all the answers

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