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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
The Alleghanian orogeny, a result of three separate continental collisions. USGS. The immense region involved in the continental collision, the vast temporal length of the orogeny, and the thickness of the pile of sediments and igneous rocks known to have been involved are evidence that at the peak of the mountain-building process, the Appalachians likely once reached elevations similar to ...
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.
The whole sequence was deformed, metamorphosed and intruded by felsic magmas during the Hercynian orogeny. The massif is cut in three by two major late Hercynian southeast-northwest striking shear zones (the North and South Armorican Shear Zones). The divisions are simply called the North, Central and South Armorican Zones. Generally the north ...
Overall, Italian Paleozoic rocks commonly show evidence of the Hercynian orogeny in the Alps, Sardinia, the Apuan Alps of Tuscany, and the Peloritani mountains of Sicily and Calabria. The Hercynian orogeny produced a large thrust belt, thickened the crust and led to polyphaser metamorphism yielding rocks such as gneiss, phyllite and amphibolite.