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disconformity

1. n. [Geology]

A geologic surface that separates younger strata from older strata and represents a time of nondeposition, possibly combined with erosion. Some disconformities are highly irregular whereas others have no relief and can be difficult to distinguish within a series of parallel strata.

See: angular unconformityerosionerosionhiatusnonconformitystratumunconformity

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