Gothian orogeny
{{Short description|Orogeny in western Fennoscandia}}
The Gothian orogeny ({{langx|sv|Gotiska orogenesen}}) or Kongsberg orogeny was an orogeny in western Fennoscandia that occurred between 1750 and 1500 million years ago. It precedes the younger Sveconorwegian orogeny that has overprinted much of it.{{sfn|Lundqvist|Lundqvist|Lindström|Calner|2011|p=194}} 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.{{sfn|Lundqvist|Lundqvist|Lindström|Calner|2011|p=208}}
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.{{sfn|Graversen|Pedersen|1999}}
Footnotes
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References
- {{cite journal |last=Graversen |first=Ole |last2=Pedersen |first2=Svend |date=1999 |title=Timing of Gothian structural evolution in SE Norway: A Rb-Sr whole-rock age study |url=http://foreninger.uio.no/ngf/ngt/pdfs/NGT_79_1_047-056.pdf |journal=Norsk Geologisk Tidsskrift |volume=79 |issue=47–56 |access-date=15 September 2015}}
- {{cite book |last1=Lundqvist |first1=Jan |last2=Lundqvist |first2=Thomas |last3=Lindström |first3=Maurits |last4=Calner |first4=Mikael|last5=Sivhed |first5=Ulf |author-link1=Jan Lundqvist |author-link2=Thomas Lundqvist (geologist)|author-link3=Maurits Lindström|edition=3rd |date=2011 |title=Sveriges Geologi: Från urtid till nutid |chapter=Sydvästskandinaviska provinsen |language=sv |location=Spain |publisher=Studentlitteratur |isbn=978-91-44-05847-4 }}
{{Geology of Europe}}
Category:Paleoproterozoic orogenies