Gothian orogeny

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

The Gothian orogeny (Swedish: Gotiska orogenesen) or Kongsberg orogeny was an orogeny in western Fennoscandia that occurred between 1750 and 1500 millions years ago. It precedes the younger Sveconorwegian orogeny that has overprinted much of it.[1] The Gothian orogeny formed along a subduction zone and resulted in the formation of calc-alkaline igneous rocks 1700 to 1550 million years ago, including some of the younger members of the Transscandinavian Igneous Belt.[2]

The deformation associated with the orogeny can be seen in metatonalite, paragneiss and biotite orthogneisses in southeast Norway. These rocks were all subject to amphibolite facies metamorphism.[3]

References

  1. ^ Lundqvist et al., p. 194
  2. ^ Lundqvist et al., p. 208
  3. ^ Graversen, Ole; Pedersen, Svend (1999). "Timing of Gothian structural evolution in SE Norway: A Rb-Sr whole-rock age study" (PDF). Norsk Geologisk Tidsskrift. 79 (47–56). Retrieved 15 September 2015.

Cited book

Retrieved from "https://en.wikipedia.org/w/index.php?title=Gothian_orogeny&oldid=836730797"
This content was retrieved from Wikipedia : http://en.wikipedia.org/wiki/Gothian_orogeny
This page is based on the copyrighted Wikipedia article "Gothian orogeny"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA