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Deformation structures in the gneissic exotic pebbles from the area of Wo osate (Cisna sandstone, Dukla tectonic unit, Outer Carpathians, Poland)Keywords: gneissic exotic pebbles , foliation , metamorphism , mica fish , Bieszczady Mts , Outer Carpathians , Poland Abstract: 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 500-550°C. 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.
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