Abstract
The newest results of sedimentological and paleontological investigations of part of the Urgonian Limestones studied in the surrounding of Boljevac on the SE slopes of the Kucaj Mts. (Carpatho-Balkanides, eastern Serbia) are presented. On two localities, near the village Faca Vajali, four types of microfacies and one subtype within the bioclastic limestones were separated. The characteristics of the depositional environments of the investigated Urgonian Limestones were studied and are discussed. At the base of the established rich microassociations of foraminifera and algae, the vertical distribution of foraminiferal species was precisely defined which enabled the determination the the age of this part of the Urgonian Limestones as Late Barremian-Early Aptian.
Highlights
The rocks of Lower Cretaceous age, belonging to the eastern Serbian Carpatho-Balkanides, are widely distributed and facially heterogeneous
The mentioned sediments are most often in the mountainous area of the middle eastern Serbian Carpatho-Balkanides, which extend as an elongated arc from the Danube in the north southwards, twist toward southeast and east until the Serbian-Bulgarian boundary
The aim of this paper is to present the results of the new detailed micropaleontological and sedimentological studies and evaluate these results in order to contribute to a better understanding of this part of the Urgonian sediments of eastern Serbia
Summary
The rocks of Lower Cretaceous age, belonging to the eastern Serbian Carpatho-Balkanides, are widely distributed and facially heterogeneous. It refer to the Barremian and Aptian sediments and their special type known as Urgonian, Urgonian facies or Urgonian development. A detailed summary of investigations of the Urgonian sediments of the eastern Serbian Carpatho-Balkanides until 1974 was given by JANKI^EVI] (1978). His monograph contains numerous new and comprehensive data about the paleontology, stratigraphy, and lithology of the Urgonian.
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