First evidence of uhp metamorphism within the Seve Nappe Complex of central Sweden
2012
The first evidence of UHP metamorphism in the Seve Nappe Complex of northern Jamtland, central Swedish
Caledonides, was discovered in 2010 (Majka & Janak 2011). The UHP parageneses occur within a kyanite-bearing
eclogite, forming part of a metabasic dyke that truncates an orogenic garnet peridotite body. This kyanite-eclogite
provides key information about the peak UHP metamorphic conditions and subsequent granulite facies overprint.
The garnet peridotite body is located close to lake Friningen, northeast of the town Gaddede. The metabasic dyke
consists predominantly of a bi-mineralic garnet pyroxenite (Cpx=diopside); however this dominant composition
locally "grades" into that of the kyanite-eclogite described here.
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