CDS 2026 (I) General Knowledge, question 68

Topic: Geography

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Q68

Consider the following statements regarding metamorphic rocks :

  1. Ortho-metamorphic rocks are formed from igneous rocks.

  2. Intense heat of the intruding magmas results in metamorphism of the surrounding rocks, a process known as dynamic metamorphism.

Which of the statements given above is/are correct ?

  1. (a) 1 onlyCorrect answer
  2. (b) 2 only
  3. (c) Both 1 and 2
  4. (d) Neither 1 nor 2

Solution.

Answer: (a) 1 only

  1. An ortho-metamorphic rock has an igneous parent, so statement 1 is true.
  2. Heating of adjacent country rock by an intrusion is contact or thermal metamorphism.
  3. Dynamic metamorphism is associated primarily with deformation and stress, making statement 2 false.