(redirected from unconformities)
Also found in: Legal, Encyclopedia.
Related to unconformities: correlation


n. pl. un·con·for·mi·ties
1. Lack of conformity; nonconformity.
2. 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.


n, pl -ties
1. lack of conformity
2. (Geological Science) the contact surface between younger and older rocks representing a discontinuity in the geological record. Most commonly it represents an erosional surface


(ˌʌn kənˈfɔr mɪ ti)

n., pl. -ties.
1. lack of conformity; incongruity; inconsistency.
2. Geol. a discontinuity in a stratigraphic sequence.


A level where sedimentary rocks cover an older rock surface partly removed by erosion. The level marks a time gap.
References in periodicals archive ?
But in Syria and Iraq, there are major unconformities between the Lower and Upper Paleozoic.
These uplift events must have had a profound regional, if not global, effect on our ability to correlate specific unconformities and tectono-eustatic events through the rock record.
Schnapp mull over unconformities between archaeology and monument management present and past.
Sea-level changes and tectonic control of unconformities, western interior, U.