Unconformity definition

ŭnkən-fôrmĭ-tē
Frequency:
(geology) A surface between successive strata representing a missing interval in the geologic record of time, and produced either by an interruption in deposition or by the erosion of depositionally continuous strata followed by renewed deposition.
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Lack of conformity; nonconformity.
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A break in the continuity of rock strata in contact, separating younger from older rocks and usually resulting from erosion of the surface of the older bed before the younger bed was laid down.
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(geology) A gap in time in rock strata, where erosion occurs while deposition slows or stops.
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A lack of conformity; inconsistency; incongruity.
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The surface of contact between such strata.
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A surface between successive strata representing a missing interval in the geologic record of time, produced either by an interruption in deposition or by the erosion of depositionally continuous strata followed by renewed deposition. An unconformity is a type of discontinuity.
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(nonstandard) A lack of conformity.
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Origin of unconformity