unconformity


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Related to unconformity: disconformity

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 ?
Discovery of high-grade unconformity mineralization in new E series lenses at the Gryphon deposit
Each one of the erosional episodes is indicated by the presence of an unconformity affected sedimentary material, which had already been consolidated into rock before subsequent layers of sediment were deposited.
Investigations performed along the Middle Jurassic Alpine Tethyan unconformity surface of E Sardinia evidenced an elaborate surface that developed over older Late Paleozoic to Triassic rocks.
According to seismic data, these were interrupted by subtle angular unconformities, the Paleogene mid-Brookian unconformity in one and the Pliocene-Pleistocene in four.
As in Algeria, Tunisia's geology is dominated by a post-Paleozoic unconformity.
For Premier, Flasaga is an "under-explored, target-rich property" in the heart of the Red Lake camp that's close to an important geologic feature known as the Balmer-Confederation unconformity, which has spawned multi-million ounce past and currently-producing Red Lake area mines.
Lower boundary in Maroosk has unconformity with Jurassic sediments (Chamanbid Formation) and upper boundary has unconformity with red conglomerates of neogene.
Other popular new features include wrapping text onto multiple lines in linked text objects, only showing headers/footers on specific pages, drawing unconformity lines, and easier-to-use templates.
Seismic interpretation reveals a regional Early Miocene Unconformity (EMU) separating pre-Oligocene to Miocene rifted basement from overlying undeformed Upper Miocene-Pliocene bathyal sediments.
Trenches excavated across the RFF reveal a distinct angular unconformity, steeply dipping strata cut by low-angle thrusts, and an unconformity below relatively undeformed strata [Hebeler et al.
The depth to the Athabasca unconformity is very shallow, ranging from zero to 350 metres (1,148 ft).
The tenements host a number of undrilled exploration targets including potential IOCG targets at Island Lagoon and Evelyn Dam, a potential Athabasca unconformity uranium target at Apollo.