regional unconformity

regional unconformity

[′rēj·ən·əl ‚ən·kən′fȯr·məd·ē]
(geology)
A continuous unconformity extending throughout a wide region that may be nearly continentwide, and usually represents a long period of time.
References in periodicals archive ?
Late Pleistocene regional unconformity in Bay of Fundy, coastal southwest New Brunswick, Atlantic Geoscience 48, Society Abstracts, 38th Annual General Meeting.
2) overlies a regional unconformity (see below) and starts with continental conglomerates and sandstones before passing into marine carbonates of the Genna Selole Fm (Bajocian--Bathonian) (Del Rio, 1976, 1984; Dieni et al., 1983; Dieni and Massari, 1985a; Costamagna and Barca, 2004; Costamagna et al., 2007; Costamagna, 2015).
The Paleocene sequence is separated from the underlying Upper Cretaceous sequence by a regional unconformity with local conglomerate at its base.
The Birrindudu Uranium Project consists of nine exploration tenements (1,613sq km), covering the regional unconformity between the Tanami Domain and the Birrindudu Basin.
The following 20 Ma period in Estonia was characterized by erosion and the formation of a regional unconformity. The Caledonian Solundian extensional phase took place between 405 and 395 Ma and continued after 395 Ma [8].
This regional unconformity represents the transition between the Permian volcano-plutonic complex (Choiyoi Group) to the Late Triassic rifting stage in the region.
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