Extensional unroofing of the Veliki Jastrebac dome (Serbia)

Milun Marović; Ilija Đoković; Marinko Toljić; Darko Spahić; Jelena Milivojević

doi:10.2298/GABP0701021M

Milun Marović Faculty of Mining and Geology, Department of Geology, Belgrade University, Kamenička 6, 11000 Belgrade, Serbia.
Ilija Đoković Faculty of Mining and Geology, Department of Geology, Belgrade University, Đušina 7, 11000 Belgrade, Serbia.
Marinko Toljić Faculty of Mining and Geology, Department of Geology, Belgrade University, Đušina 7, 11000 Belgrade, Serbia.
Darko Spahić Geological Institute of Serbia, Rovinjska 12, 11000 Belgrade, Serbia.
Jelena Milivojević Faculty of Mining and Geology, Department of Paleontology, Belgrade University, Kamenička 6, 11000 Belgrade, Serbia.

DOI: https://doi.org/10.2298/GABP0701021M

Keywords: Serbia, Veliki Jastrebac, tectonics, syntectonic intrusion, extension, unroofing

Abstract

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, exhumed by mechanisms of extensional tectonics in the Paleogene.