On the graptolite schist's formation, Silurian-Lower Devonian, in the Carpatho-Balkanides of eastern Serbia

Branislav Krstic, Ljubinka Maslarevic, Milan Sudar
2005 Geološki Anali Balkanskoga Poluostrva  
Research on Silurian sediments of eastern Serbia started in the middle of the last century with the finding of graptolites in the vicinity of Zvona~ka Banja in southeastern Serbia (ZAFIROV, 1942 (ZAFIROV, , 1950 and between Garvanica and ^uka on the foothills of the Rtanj Mt. (PET-KOVI], 1954). Subsequently, VESELINOVI] (1959) and MIHAJLOVI] (1959, 1961) published results of their research on Silurian graptolites in the vicinity of Zvona~ka Banja, while KRSTI] (l959, 1960, 1961) published
more » ... 61) published results of his investigations of newly discovered localities of Silurian in the area of the Ku~aj Mts. During the next ten years, investigations were directed toward discovering as many localities with graptolite faunas as possible and the determination of the collected material. VESELI-NOVI] (1964, cum lit.) published the results of his researches on Lower Paleozoic facies of eastern Serbia and the determination of graptolite faunas which he collected himself. Results of research on the Silurian graptolites collected in the areas of the Zvona~ka Banja, the Rtanj Mt. and the Ku~aj Mts. were published by MIHAJLOVI] (1974, cum lit.), while those from the area of the Ku~aj Mts. were also published by KRSTI] (1984, cum. lit.). Abstract. The fabric of the Silurian and a part of the Lower Devonian in the Carpatho-Balkanides of eastern Serbia, i.e. in two large geotectonic units, the Ku~aj Unit (Getic) and the Lu'nica Unit (West Kraishte), is reviewed in this paper. Silurian sediments of the Serbian part of the Carpatho-Balkanides are made of the Graptolite Schists Formation, from the lower part of the acuminatus Zone at the Ordovician-Silurian boundary to the transgrediens Zone at the Silurian-Devonian boundary. The presence of all parts of the Silurian is proved on the basis of graptolite faunas: Llandovery (Rhuddnanian, Aeronian, Telychian), Wenlock (Sheinwoodian, Homerian), Ludlow (Gorstian, Ludfordian) and Pridoli. Two Lower Devonian (Lochkovian) zones (uniformis and hercynicus), with which the deposition of the Graptolite Schists Formation ended in eastern Serbia is also described. Data on the geochemical characteristics of the Graptolite Schists Formation are presented as well. Apstrakt. U radu je prikazana gra|a silura i dela doweg devona u Karpato-balkanidima isto~ne Srbije i to u dve velike alpijske geotektonske jedinice -Ku~ajskoj (Getik) i Lu'ni~koj (zapadno Kraji{te). Silurske sedimente srpskog dela Karpato-balkanida izgra|uje formacija graptolitskih {kriqaca, po~ev od doweg dela zone acuminatus na granici ordovicijum-silur do zone transgrediens na granici silur-devon. Na osnovu faune graptolita dokazano je prisustvo svih odeqaka silura i to: landoverija (Rhuddnanian, Aeronian, Telychian), venloka (Sheinwoodian, Homerian), ladloa (Gorstian, Ludfordian) i p{idolija. Opisane su i dve dowodevonske (Lochkovian) zone -uniformis i hercynicus, kojima se zavr{ava talo'ewe formacije graptolitskih {kriqaca u isto~noj Srbiji. Dati su i podaci o geohemijskim karakteristikama formacije graptolitskih {kriqaca.
doi:10.2298/gabp0566001k fatcat:rsnmkqio6vabfmefdpgwnsjmqy