unconformity

Meanings

1. 1
   noun

   lack of conformity; a surface of contact between rock strata of differing age

   The cliff face exposed a clear geological unconformity.

From un- ('not') + conformity, from Old French conformite, from Late Latin conformitas, from Latin conformare ('to fashion, shape alike'), from com- ('together') + formare ('to form'), from forma ('shape, form').

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