unconformity

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Related to unconformities: correlation

un·con·for·mi·ty

 (ŭn′kən-fôr′mĭ-tē)
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.

unconformity

(ˌʌnkənˈfɔːmɪtɪ)
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

un•con•form•i•ty

(ˌʌn kənˈfɔr mɪ ti)

n., pl. -ties.
1. lack of conformity; incongruity; inconsistency.
2. Geol. a discontinuity in a stratigraphic sequence.
[1590–1600]

unconformity

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.