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A fault dipping at 65 degrees has a hade of

  • A.35 degrees
  • B.25 degrees
  • C.65 degrees
  • D.115 degrees

Answer: B

Correct answer: 25 degrees

Hade is measured from the vertical and dip from the horizontal, so the two are complementary:

\[ \text{hade} = 90^\circ - 65^\circ = 25^\circ \]

The steep fault has a small hade. Answering 65 degrees confuses the two conventions, which is exactly what the question tests.

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