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Metamorphism and Metamorphic Rocks ESRC 4012 I- Introduction & definitions
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Metamorphism and Metamorphic Rocks ESRC 4012 I- Introduction & definitions

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Questions and Answers

What is metamorphism?

  • Mineralogical and/or textural changes in response to changes in physicochemical environment (correct)
  • A process that leads to significant changes in the chemical composition of the rock
  • A process involving only chemical changes in the bulk rock composition
  • A process that occurs predominantly in the liquid state

    • What is required for a change in a rock to be described as 'metamorphic'?

  • Occur in the liquid state and involve significant chemical changes
  • Occur at conditions below those of diagenesis
  • Result in complete change of the chemical composition of the rock
  • Occur in the solid state and be isochemical (correct)

    • What is the process called when metamorphism is accompanied by a change in the chemical composition of the rock?

  • Metasomatism (correct)
  • Sedimentation
  • Melting
  • Diagenesis

    • How are metamorphic rocks formed?

    <p>Subjected to heat, pressure, and chemically active fluids</p> Signup and view all the answers

    Why is 'metamorphism' an appropriate name for the process?

    <p>&quot;Metamorphism&quot; means to &quot;change form&quot;</p> Signup and view all the answers

    What is the definition of metamorphism?

    <p>Mineralogical and/or textural changes in response to changes in physicochemical environment</p> Signup and view all the answers

    What are the conditions for a change in a rock to be described as 'metamorphic'?

    <p>Occur in the solid state, be isochemical, and take place at conditions above diagenesis but below melting</p> Signup and view all the answers

    What is the process called when metamorphism is accompanied by a change in the chemical composition of the rock?

    <p>Metasomatism</p> Signup and view all the answers

    How are metamorphic rocks formed?

    <p>Subjected to heat, pressure, and chemically active fluids</p> Signup and view all the answers

    Why is 'metamorphism' an appropriate name for the process?

    <p>It involves changes in the form and structure of the rocks</p> Signup and view all the answers

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