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Discussion

Consider the following statements about faults and joints.

1. A joint shows no appreciable displacement   2. Hade is measured from the horizontal   3. Repetition of a bed in a borehole suggests a thrust

  • A.1 and 3 only are correct
  • B.1, 2 and 3 are all correct statements about faults and joints
  • C.2 and 3 only are correct
  • D.1 and 2 only are correct

Answer: A

Correct answer: 1 and 3 only are correct

Statements 1 and 3 are correct: a joint is by definition a fracture without appreciable displacement, and repetition of a bed in a vertical hole indicates that the section has been stacked by a reverse or thrust fault. Statement 2 reverses the convention - hade is measured from the vertical, and dip from the horizontal, the two being complementary.

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