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Discussion

An unconformity represents

  • A.a plane along which rocks have slipped
  • B.the axial plane of a fold
  • C.a break in the geological record
  • D.a continuous sequence of deposition

Answer: C

Correct answer: a break in the geological record

An unconformity is a surface representing time not recorded - a period of non-deposition, erosion or both, between the rocks below and those above. It is where the record has a gap, and the length of the gap is established from the ages of the beds on either side.

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