Metamorphic constraints on the Caledonian Upper Allochthon of Central Norway: the Gula Complex staurolite–garnet–kyanite mica schist
Published:January 01, 2014
Ane K. Engvik, Tor Grenne, Ole J. Lutro, Gurli B. Meyer, 2014. "Metamorphic constraints on the Caledonian Upper Allochthon of Central Norway: the Gula Complex staurolite–garnet–kyanite mica schist", New Perspectives on the Caledonides of Scandinavia and Related Areas, F. Corfu, D. Gasser, D. M. Chew
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Petrological studies of staurolite–garnet–kyanite–biotite schist and garnet–muscovite schist of the Gula Complex, central Norway, provide constraints on metamorphic evolution during Scandian continent–continent collision, burial and exhumation of the Caledonian Upper Allochthon. The biotite schist contains conspicuous porphyroblasts of Fe-rich staurolite, garnet and kyanite, set in a fine-grained, well-foliated matrix of biotite, quartz, minor plagioclase and muscovite. The muscovite schist is fine- to medium-grained with a muscovite–quartz-dominated matrix, including garnet, biotite, minor plagioclase and clinozoisite. Pressure–temperature (P–T) modelling based on thermobarometric calculations and construction of P–T pseudo-sections illustrate that metamorphism reached 680 °C with...
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New Perspectives on the Caledonides of Scandinavia and Related Areas
The Caledonides are a major orogenic belt that stretches from the Arctic, through Scandinavia, East Greenland, Britain and Ireland into the Atlantic coast of North America. Following the break-up of Rodinia, the Caledonides formed in the Palaeozoic by the drifting of various continents and their eventual aggregation in the Silurian and Devonian. The orogen subsequently fragmented during the opening of the Atlantic Ocean. This volume brings together 25 papers presenting the results of modern research that investigates the orogenic processes and the provenance of specific components of the belt. The contributions reflect different lines of research, linking traditional field studies with modern analytical techniques. In addition three overview papers summarize the main features of the belts in Scandinavia, Svalbard, East Greenland, Britain and Ireland, highlighting the advances made since the last major synthesis of the Scandinavian Caledonides 30 years ago, and discussing important open questions.