The Viséan Age is the middle of three ages in the MississippianEpoch of the CarboniferousPeriod. It lasted from 345.3±2.1 million years ago to 326.5±1.6 million years ago. It was preceded by the Tournasian Age and followed by the Serpukhovian Age. Look up Age on Wiktionary, the free dictionary Age may refer to: The length of time that a person has lived, reckoned from date of birth in most cultures; see also: ageing, for the social, cultural, and economic factors of age and ageing. ... This article is about the geologic period; for the North American culture, see Mississippian culture. ... The word epoch can mean either an interval of time, or a particular point in time used as a reference point. ... The Carboniferous is a major division of the geologic timescale that extends from the end of the Devonian period, about 359. ... Look up period in Wiktionary, the free dictionary Look up periodic in Wiktionary, the free dictionary Period and periodic may refer to: Period (music) Period (rhetoric) Historical period Menstrual cycle, relating to the reproductive system full stop, also known as a period, that marks the end of a sentence Science... The Serpukhovian Age is the last of three ages in the Mississippian Epoch of the Carboniferous Period. ...
The ages of the folded and detached segments (formations) diminish towards the E. The Middle to late Visean basin fills were sedimented in a setting of maturing CIA with scarcely preserved features of OIA.
The youngest siliciclastics of the latest Visean to early Namurian(?) age were deposited in a CIA to ACM setting, and were provided by a homogeneous acidic arc source.
The main DS volumes were deposited during the Visean to Visean/Namurian-A, but the oldest DS formation on the Northwest is in close contact with the Givetian trilobite shale and can be also Devonian(?).
It is possible, that late Visean siltstone and conglomerate formations continued this stack of sequences in a sense of sedimentary, not tectonic continuation.
Block D (on the northeast of the quarries) is fairly similar, with an exception for direct cover of the Vilemovice (Mokra) limestone.
This cover consists of dark gray detritic banks, in contrast with lenticular limestones of the blocks C and E. Block E corresponds to well-known sequences of the Western Quarry of Mokra.
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