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Location of the Hercynian-Alleghenian mountain belts in the middle of the Carboniferous period.Present day coastlines are indicated in grey for reference. [1]The Variscan orogeny, or Hercynian orogeny, was a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangaea.
The Rhenohercynian Zone or Rheno-Hercynian zone [2] in structural geology describes a fold belt of west and central Europe, formed during the Hercynian orogeny (about ). The zone consists of folded and thrust Devonian and early Carboniferous sedimentary rocks that were deposited in a back-arc basin along the southern margin of the then existing ...
Most important structures and zones of the Hercynian orogeny in Europe. [1]The Saxothuringian Zone, Saxo-Thuringian zone [2] or Saxothuringicum is in geology a structural or tectonic zone in the Hercynian or Variscan orogen (380-270 million years old) of central and western Europe.
Variscan orogeny, also known as Hercynian orogeny – Collision of tectonic plates resulting in the creation of mountains – Deformation in western Iberia, southwest Ireland, southwest England, central and western France, southern Germany and Czech Republic, during the Devonian and Carboniferous Periods
This category contains articles on the Hercynian/Varsican orogeny of southern and central Europe and northern Africa. Related categories on Earth history are Category:Carboniferous and Category:Devonian.
Orogeny (/ ɒ ˈ r ɒ dʒ ə n i /) is a mountain-building process that takes place at a convergent plate margin when plate motion compresses the margin. An orogenic belt or orogen develops as the compressed plate crumples and is uplifted to form one or more mountain ranges .
It has been shaped mainly by the Caledonian orogeny and the Variscan orogeny. The Alpine orogeny has also left its imprints, probably causing the important Cenozoic volcanism. The Massif Central has a very long geological history, underlined by zircon ages dating back into the Archaean 3 billion years ago.
In Iberia this occurred in the pre-Stephanian Carboniferous (354–305 Ma). The external part of the orogeny was the Cantabrian zone. This was deformed in the upper crustal layers. The West Asturian Leonese zone and Central Iberian zone are the external parts of the orogeny and are more deeply deformed and metamorphosed, and intruded.