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The Western Gneiss Region (Norwegian: Gneisregionen) is a large geological unit in Norway chiefly made of gneiss rock that formed through metamorphism during the Caledonian orogeny. It makes up a tectono-stratigraphic terrane of the Scandinavian Caledonides and is also part of the Baltic shield. The region extends across western Norway from Bergen to Trondheim as a Caledonian window, outliers of the Western Gneiss Region crop out as far north as the Lofoten archipelago. The rocks of the Western Gneiss Region are made up of variously deformed Precambrian basement, and cover rocks of autochthonous and para-autochthonous origin with evidence of medium to high grade metamorphism including ultra-high-pressure metamorphism.

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  • La Western Gneiss Region (Regione del gneiss occidentale) è una vasta unità geologica della Norvegia, composta principalmente da rocce di gneiss che si sono formate per metamorfismo nel corso dell'orogenesi caledoniana. La regione forma un terrane tettono-stratigrafico dell'orogenesi caledoniana, e fa anche parte dello scudo baltico. La regione si estende attraverso la Norvegia occidentale da Bergen a Trondheim, come una finestra tettonica caledoniana e i suoi elementi più remoti affiorano a nord fino alle Isole Lofoten. Le rocce della Western Gneiss Region sono composte di basamento precambriano variamente deformato e coprono rocce di origine e para-autoctona con evidenza di un grado di metaformismo da medio a alto, includendo anche il metaformismo di ultra-alta pressione. Le rocce di questa regione si sono formate tra 1700 e 1600 milioni di anni fa nel tardo Paleoproterozoico. Quello che sarebbe successivamente diventata la Western Gneiss Region fu intruso da migmatiti e graniti durante l'orogenesi sveconorvegese. (it)
  • The Western Gneiss Region (Norwegian: Gneisregionen) is a large geological unit in Norway chiefly made of gneiss rock that formed through metamorphism during the Caledonian orogeny. It makes up a tectono-stratigraphic terrane of the Scandinavian Caledonides and is also part of the Baltic shield. The region extends across western Norway from Bergen to Trondheim as a Caledonian window, outliers of the Western Gneiss Region crop out as far north as the Lofoten archipelago. The rocks of the Western Gneiss Region are made up of variously deformed Precambrian basement, and cover rocks of autochthonous and para-autochthonous origin with evidence of medium to high grade metamorphism including ultra-high-pressure metamorphism. Rocks of the Western Gneiss Region formed 1700 to 1600 million years ago in the Late Paleoproterozoic. What was to become the Western Gneiss Region was intruded by migmatites and granites during the Sveconorwegian orogeny. (en)
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  • The Western Gneiss Region (Norwegian: Gneisregionen) is a large geological unit in Norway chiefly made of gneiss rock that formed through metamorphism during the Caledonian orogeny. It makes up a tectono-stratigraphic terrane of the Scandinavian Caledonides and is also part of the Baltic shield. The region extends across western Norway from Bergen to Trondheim as a Caledonian window, outliers of the Western Gneiss Region crop out as far north as the Lofoten archipelago. The rocks of the Western Gneiss Region are made up of variously deformed Precambrian basement, and cover rocks of autochthonous and para-autochthonous origin with evidence of medium to high grade metamorphism including ultra-high-pressure metamorphism. (en)
  • La Western Gneiss Region (Regione del gneiss occidentale) è una vasta unità geologica della Norvegia, composta principalmente da rocce di gneiss che si sono formate per metamorfismo nel corso dell'orogenesi caledoniana. La regione forma un terrane tettono-stratigrafico dell'orogenesi caledoniana, e fa anche parte dello scudo baltico. La regione si estende attraverso la Norvegia occidentale da Bergen a Trondheim, come una finestra tettonica caledoniana e i suoi elementi più remoti affiorano a nord fino alle Isole Lofoten. (it)
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  • Western Gneiss Region (it)
  • Western Gneiss Region (en)
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