Extensional unroofing of the Veliki Jastrebac dome (Serbia)

This paper presents the basic structural elements of the dome of Veliki Jastrebac, as well as the chronology and mechanisms of the deformational events responsible for its formation. It was determined that the dome of Veliki Jastrebac consists of two large sequences which are, in the vertical section, in the inverse position. The lower part is made of Late Cretaceous and Cretaceous-Palaeogene low-grade to medium-grade metamorphic rocks, which are intruded by Paleogene granitoid (probably the Vardar Zone), which are covered with a large overthrust consisting metamorphics of the Serbian-Macedonian Mass. The low-grade to medium-grade metamorphosed complex of Veliki Jastrebac, with the granitoid, represents a metamorphic core complex, ex- humed by mechanisms of extensional tectonics in the Paleogene. Apstrakt. U radu su prikazani osnovni elementi gra|e Velikojastreba~ke dome i hronologija i meha- nizmi deformacionih doga|aja odgovornih za weno formirawe. Utvr|eno je da domu izgra|uju dva krupna navla~no-naborna entiteta koja su, u vertikalnoj sukcesiji, u inversnom poloaju. Dole lee gorwo- kredne i kredno-paleogene nisko do sredwometamorfisane stene u koje je utisnut paleogeni granitoid (verovatno Vardarska zona), gore je kao krupna navlaka, kristalin Srpsko-makedonske mase. Nisko do sredwe metamorfisan kompleks Velikog Jastrepca sa granitoidom predstavqa metamorfni core com- plex, ekshumiran mehanizmima ekstenzione tektonike u paleogenu.