RESEARCH OF MIOCENE SEDIMENTS OF THE BORYSLAV-POKUTTYA AND SAMBIR NAPPES OF THE UKRAINIAN PRE-СARPATHIANS – THE PATH FROM DESCRIPTIVE LITHOSTRATIGRAPHY TO COMPLEX LITHOSTRATIGRAPHIC AND BIOSTRATIGRAPHIC CONSTRUCTIONS AND PALEOECOLOGICAL RECONSTRUCTIONS

• Дата: 2026
• Автор: Кулянда, М.Й.
• Формат: Стаття
• Мова: Українська
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2026
• Теми: Miocene; foraminifera; stratigraphy; paleoecology; Boryslav- Pokuttya Nappe; Sambir Nappe; Ukrainian Pre-Carpathians; Polyanytsya; Vorotyshcha; Stebnyk; Berezhnytsya formations
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/335090
• Назва журналу: Geological journal

The analysis of the history of studies of the stratigraphy of Miocene deposits of the Ukrainian Pre-Ccarpathians is important for generalizing and understanding the current state of litho- and biostratigraphy and paleoenvironment of the Neogene sedimentary basin. Important problems for the entire period of study of the region were the identification of local stratigraphic units according to litho- and biostratigraphic features, determination of their age, correlation of sections, reconstruction of sedimentation conditions. The purpose of the presented work is to analyze the history of the study of stratigraphy, biostratigraphy, mainly based on foraminifera, of the Miocene sediments of the Boryslav-Pokuttya and Sambir nappes and the conditions of existence of biota in paleobasins and to consider the current state of these studies. The material is the work of previous researchers published in articles, monographs, and research reports. In the presented work, four stages of research are distinguished according to the historical principle: from the end of the 19th century to the Second World War; after the Second World War to the 1960s; from the 1970s to the 1990s; from the end of the 1990s to the present day. Within each stage, lithostratigraphic and biostratigraphic studies, as well as paleoecological analysis of foraminifera, are considered. At the first stage, the leading research methods were geomapping and lithostratigraphic, the overall result of which was the identification of local stratigraphic units and their sequences in a stratigraphic section without a reliable paleontological justification of the age. In the following stages, the application of complex geomapping, biostratigraphic, lithostratigraphic, biofacies, and paleoecological methods contributed to the identification of new stratigraphic units and the construction of new stratigraphic schemes, as well as the tracing of the evolution of the Neogene basin.