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Encyclopedia > Avalonia

Avalonia was a paleomicrocontinent also known as a A terrane in paleogeography is an accretion that has collided with a continental nucleus, or craton but can be recognized by the foreign origin of its rock strata. ... Terrane. The name is derived from the Avalon Peninsula in Newfoundland. In the early Cambrian, Pannotia was a supercontinent that existed from about six hundred million years ago (mya) to about five hundred forty mya. ... Pannotia broke up and Avalonia broke off of This article is about the ancient supercontinent of Gondwana. ... Gondwana. Avalonia collided with Baltica is the craton beneath northwestern Eurasia. ... Baltica in the The Ordovician period is the second of the six (seven in North America) periods of the Paleozoic era. ... Ordovician. In the Silurian, Baltica and Laurentia is the craton at the heart of North America. ... Laurentia collided with Avalonia and trapped Avalonia between them, forming Euramerica. In the The Permian is a geologic period that extends from about 280 to 248 million years before the present (mya). ... Permian, Euramerica became part of Pangaea. In the Jurassic, Pangaea split into Laurasia was a supercontinent that broke off from the Pangaean supercontinent in the late Mesozoic era. ... Laurasia and Gondwana, with Avalonia as part of Laurasia. In the The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period (about 135 mya) to the beginning of the Paleocene epoch of the Tertiary period (65 mya). ... Cretaceous, Laurasia broke up into World map showing location of North America A satellite composite image of North America North America is the third largest continent in area and in population after Eurasia and Africa. ... North America and African-Eurasian aspect of Earth Eurasia is the combined land mass of Europe and Asia. ... Eurasia with Avalonia split between them.


External links

  • Article about Avalonia at Palaeos.Com (http://palaeos.com/Earth/Geography/Avalonia.htm) (licensed under Attribution-NonCommercial 1.0 complete with pictures)
  • http://www.avalonia.co.uk Alternative Spirituality Information

  Results from FactBites:
 
Palaeos Earth: Geography: Avalonia (743 words)
It has been suggested that Avalonia was originally part of Gondwanaland after the breakup of Pannotia in the Neoproterozoic.
Examination of Avalonian rocks in England indicates that Avalonia itself was assembled from a collection of smaller terranes appended to a Proterozoic supercontinent.
Avalonia apparently attached itself to North America in the Ordovician, was later attached to Europe in the Permian and then was fractured when the Supercontinent of Laurasia broke up and the modern Atlantic Ocean opened."
Short Tectonic History of the North Sea Area (895 words)
Avalonia is a minor continent or terrane that covers the present areas of southern England, the Benelux, northern Germany and northwestern Poland.
It is delimited by the Caledonian Deformation Front (CDF) to the North, the Tornquist zone to the Northeast, the Variscan (Rheno-Hercynian) orogeny to the South and western boundary of Europe's continental crust offshore southern Ireland to the West.
The continuation of the transition between Laurentia and Avalonia from the British mainland into the North Sea is not clear; however, an extrapolation of the Avalonia-Baltica CDF to the West and a connection of the Scottish with the Norwegian Caledonides (see e.
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