Variscan orogeny


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Related to Variscan orogeny: Caledonian orogeny, Alpine orogeny, Hercynian orogeny

Variscan orogeny

[va′ris·kən ȯ′räj·ə·nē]
(geology)
The late Paleozoic orogenic era in Europe, extending through the Carboniferous and Permian. Also known as Hercynian orogeny.
References in periodicals archive ?
Key words: Topography, delamination, isostasy, Cantabrian Zone, Variscan orogeny, Iberian Peninsula.
D1 and D2 correspond to the collisional stage of the Variscan orogeny and are thought to be of Mid-Upper Devonian to Early-Mid-Carboniferous age.
Svaty Jan Volcanic Centre) are concentrated in the vicinity of syn-sedimentary Tachlovice Fault, which was further reactivated during Variscan Orogeny (Kriz 1991).
Available isotopic data from the literature also suggest that mantle metasomatism beneath central Spain, before the end of the Variscan orogeny, is more likely caused by continental crust components, probably associated with delamination of dense crustal blocks from the thickened Variscan collisional belt.
Large volumes of granitoids were emplaced during the post-collisional stage of the Variscan Orogeny, mostly late- to postkinematically to the D3 event (e.
These rocks were mainly deformed during the Carboniferous in the Variscan Orogeny which are intruded by igneous rocks, mainly in the western region, during the Carboniferous and Permian.
The DCTZ creates a active tectonic zone formed during of the Variscan orogeny, later influenced by Alpine processes.
Apart from the episodes related to the Variscan orogeny, Paleozoic rocks have been deformed by Mesozoic extension, Paleogene compression and Neogene extension.
The EFS fault zone has been repeatedly reactivated since the Late Variscan orogeny in different regimes: transtensional at the turn of the Permian and Triassic, extensional in the Mesozoic, and transpressional at the turn of the Late Cretaceous and Palaeogene (Otto, 2003).
A major worldwide geodynamic event, the Variscan orogeny sensu lato, culminated during the Permian.
The Variscan orogeny developed in the Iberian Peninsula between the late Devonian and the late Carboniferous and the three main phases of compressive deformation (D1, D2 and D3) that ended in the Westphalian B times (i.