2026-05-10T08:31:59.695Z http://ezaposleni.singidunum.ac.rs/rest/sciNaucniRezultati/oai

ezaposleni.singidunum.ac.rs/rest/sciNaucniRezultati/oai:1:6978 2019-05-28T08:56:22Z 1

Geodiversity of Stara Planina Mountain: some sedimentary units 2017 http://ezaposleni.singidunum.ac.rs/rest/sciNaucniRezultati/oai/record/1/6978 https://www.bgd.bg/CONFERENCES/Geonauki_2017/Sbornik/pdf/72_Vakanjac_GeoSci_2017.pdf B. Vakanjac J. Kovačević M. Ganić D. Milovanović Stara Planina Mountain can be viewed from several perspectives, as a nature park and in terms of geography, geology and geodiversity, and also radioactivity. The present paper addresses areas of interest from the viewpoint of geodiversity related radioactivity. Generally speaking, Stara Planina Mountain is a complex geologic system, built up of different geologic units (with regard to the composition, characteristics and origin). From the north, where the geologic units are separated by tectonic structures and where granite and granodiorite intrusions crop out, the area is defined by faults that separate the Late Jurassic in the south from the Early Cretaceous in the north. Towards the south, there is a complex geotectonic assemblage made up of the Janja, Radičevo and Ravno Bučja granites; the Zaglavak gabbro massif; Paleozoic metamorphic rocks: Proterozoic–Cambrian, Silurian–Devonian – the Inovo Series and others; and Permian red sandstones and conglomerates. To the south, there are Mesozoic formations: Triassic (Kopren-Gostuša-Dojkinci), Jurassic (Basara, Odorovci), and Lower Cretaceous (Visočka Ržana, Dimitrovgrad). In the southern part of the Mesozoic block the Jurassic and the Cretaceous are intersected by structures with NW-SE orientation. The northern boundary of Stara Planina Mountain is not clearly defined and can be followed on the Zaječar and Bor maps along Cretaceous formations and intrusions over a length of about 30 km northward and farther via Brusnik and Brestovac to Negotin (Andjelković et al., 1977). In 1997, Stara Planina Mountain was designated a nature park, where there are a number of unique examples of geodiversity such as: Babin Zub, Arbinje and Rosomački Lonci briefly presented below. conferenceObject 171 172 National Conference with international participation “GEOSCIENCES 2017” SHORT COMMUNICATIONS ISSN 13132377