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unconformable's Usage Examples:

Consequently, Cambrian strata are usually unconformable on older rocks.

United States, in Missouri, Pennsylvania, West Virginia, Kentucky, Ohio and elsewhere, there is an unconformable junction between the Lower and Upper Carboniferous, representing an interval of time during which the lower member was strongly eroded; it has even been proposed to regard the Mississippian (Lower Carboniferous) as a distinct geological period, mainly on account of this break in the succession.

Moreover, although they interrupt the folding of the zone in which they occur, they do not disturb it: they do not, in fact, rise through the zone, but lie upon it like unconformable masses - in other words, they rest upon a thrust-plane.

The Eocene beds are unconformable, generally, upon the Cretaceous, and unconformable beneath the Miocene.

In all but a few places where their relations are known, the Proterozoic rocks are unconformable beneath the Palaeozoic Where conformity exists the separation is made on the basis of fossils, it having been agreed that the oldest rocks carrying the Olenellus fauna are to be regarded as the base of the Cambrian system.

A few geologists regard the sedimentary rocks here classed as Keweenawan as Palaeozoic; but they have yielded no fossils, and are unconformable beneath the Upper Cambrian, which is the oldest sedimentary formation of the region which bears fossils.

The Proterozoic formations are unconformable on the Archean in most places where their relations are known.

Its inner border affords admirable examples of topographical discordance where it sweeps north-westward square across the trend of the piedmont belt, the ridges and valleys, and the plateau of the Appalachians, which are all terminated by dipping gently beneath the unconformable cover of the coastal The, lain strata.

Some of its fossils also occur in the Oamaru series, but the two series are unconformable.

Blocks of unconformable strata.

unconformable's Meaning':

not correspondent

Synonyms:

inconsistent,

Antonyms:

consistent, invariable,