- Tytuł:
- Gierałtów versus Śnieżnik gneisses - what is the real difference?
- Autorzy:
- Redlińska-Marczyńska, Aleksandra
- Powiązania:
- https://bibliotekanauki.pl/articles/94442.pdf
- Data publikacji:
- 2011
- Wydawca:
- Uniwersytet im. Adama Mickiewicza w Poznaniu
- Tematy:
-
Śnieżnik gneiss
Gierałtów gneiss
structural analysis
petrography
West Sudetes
Polska
Śnieżnik
gnejs
Gierałtów
analiza strukturalna
petrografia
Sudety zachodnie
Polska - Opis:
- Structural and petrographic study applied to the gneisses from the eastern part of the Orlica-Śnieżnik Dome, indicate that two different types of gneiss are present. The Śnieżnik gneisses are porphyrithic granites, constricted and sheared into L-S tectonites, most commonly with augens; the Gierałtów gneisses are sheared migmatites, porphyroblastic gneisses and banded gneisses, with two sets of metamorphic foliation, intrafolial folds and lensoid leucosome aggregates or metamorphic porphyroblasts. Both lithologies were later zonally sheared and transformed into more or less deformationally advanced mylonites, difficult to be distinguished from one of the two types. Identification of the Śnieżnik and Gierałtów gneisses is possible only between zones of the late (Variscan) shearing, in which the original, pre-kinematic structures are preserved.
- Źródło:
-
Geologos; 2011, 17, 2; 71-96
1426-8981
2080-6574 - Pojawia się w:
- Geologos
- Dostawca treści:
- Biblioteka Nauki
Artykuł