Single zircon U-Pb ages and geochemistry of granitoid gneisses from SW Poland: evidence for an Avalonian affinity of the Brunian microcontinent.

• Authors: MAZUR Stanislaw; KRÖNER Alfred; SZCZEPAŃSKI Jacek; TURNIAK Krzysztof; HANŽL Pavel; MELICHAR Rostislav; RODIONOV Nokolay; PADERIN Ilya; SERGEEV Sergey
• Year of publication: 2010
• Type: Article in Periodical
• Magazine / Source: Geological Magazine
• MU Faculty or unit: Faculty of Science

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• Field: Geology and mineralogy
• Keywords: Sudetes; Bohemian Massif; zircon dating; geochemistry; Proterozoic; Gondwana; Avalonia
• Description: The occurrence of granitic gneisses with late Neoproterozoic protolith ages and widespread Mesoproterozoic inheritance in our dated samples support an East Avalonian affinity for the Brunian microcontinent. In contrast, the abundance of gneisses derived from an early Palaeozoic granitic protolith and devoid of Mesoproterozoic zircon cores supports the Armorican affinity of the Variscan domain bordering on the Brunia plate from the west.

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