%0 Journal Article
%T Deformation structures in the gneissic exotic pebbles from the area of Wo osate (Cisna sandstone, Dukla tectonic unit, Outer Carpathians, Poland)
%A Maciej KANIA
%A Anna WOLSKA
%J Annales Societatis Geologorum Poloniae
%D 2009
%I Geological Society of Poland
%X Gneissic exotic pebbles from the Cisna beds (Dukla tectonic unit) in the region of Wo osate (Biesz- czady Mts., Eastern Carpathians) were investigated. These exotic pebbles are from 9.5 to 13 cm in size. Basing on the structural features, the following groups of exotic pebbles were distinguished: granitic gneisses, laminated gneisses, flaser gneisses and mylonitic gneisses. Granite - granodiorite protolith was deformed in the shear zone; strain partitioning was probably an important process during deformation. The observed structures allow to determine the temperature of metamorphism as 500-550ˇăC. The lower limit of pressure was determined basing on phengite geobarometer as 5 kbar. The nature and localization of the source area can be similar to the Bretila sequence from the Romanian Eastern Carpathians.
%K gneissic exotic pebbles
%K foliation
%K metamorphism
%K mica fish
%K Bieszczady Mts
%K Outer Carpathians
%K Poland
%U http://www.asgp.pl/2009/79_1/41-52.html