Search results
Results from the WOW.Com Content Network
In the Early Paleozoic, the Armorican terrane, which today form large parts of France, was part of Peri-Gondwana; the Rheic Ocean closed in front of it and the Paleo-Tethys Ocean opened behind it. Precambrian rocks from the Iberian Peninsula suggest that it, too, formed part of core Gondwana before its detachment as an orocline in the Variscan ...
The Rheic Ocean (/ ˈ r eɪ ɪ k /; RAY-ik) was an ocean which separated two major paleocontinents, Gondwana and Laurussia (Laurentia-Baltica-Avalonia).One of the principal oceans of the Paleozoic, its sutures today stretch 10,000 km (6,200 mi) from Mexico to Turkey and its closure resulted in the assembly of the supercontinent Pangaea and the formation of the Variscan–Alleghenian–Ouachita ...
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 main exposures of the Armorican terrane are found throughout Brittany, the Channel Islands, parts of Upper Normandy, forming the Armorican Massif. [1] Other fragments thought to have originally formed part of the Armorican terrane assemblage include rock units exposed in the Vosges, Black Forest, Bohemian Massif [2] and most of the Iberian peninsula.
Map of Earth during the Early Permian, around 285 million years ago, showing Central Pangean mountain range at equator. The Central Pangean Mountains were formed during the collision of Euramerica and northern Gondwana as part of the Variscan and Alleghanian orogenies, which began during the Carboniferous approximately 340 million years ago, and complete by the beginning of the Permian around ...
Gondwana is a former supercontinent that broke off from the landmass of Pangea about 180 million years ago. It included South America, Africa, Australia and Antarctica.
Geographical position of the Massif Central in France. The basement outcrops of the Massif Central have roughly the outline of a triangle standing on its tip. Because of its size – 500 kilometers long and 340 kilometers wide – the Massif Central partakes in several tectono-metamorphic zones formed during the Variscan orogeny.
For premium support please call: 800-290-4726 more ways to reach us