The Kantemirovka Paleogene reference section of the Voronezh region
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- 作者：E. M. Bugrova ; V. N. Beniamovsky…
- 关键词：Voronezh anteclise ; northern Ukraine ; Kantemirovka reference section ; Middle Eocene ; Sergeevka ; Tishki ; and Kiev formations ; biostratigraphic units ; nannoplankton ; foraminifers ; diatoms
- 刊名：Stratigraphy and Geological Correlation
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：24
- 期：6
- 页码：602-624
- 全文大小：
- 刊物主题：Historical Geology; Structural Geology; Geophysics/Geodesy; Sedimentology; Archaeology;
- 出版者：Pleiades Publishing
- ISSN：1555-6263
- 卷排序：24
文摘
The section on the outskirts of the town of Kantemirovka is proposed to serve as a reference one for Paleogene deposits of the Voronezh region. Observing the requirements of the current Stratigraphic Code of Russia, it is suggested to introduce the Middle Eocene Sergeevka and Tishki formations, which were defined previously by V.P. Semenov as mappable lithostratigraphic units instead of the Kiev Formation (regional stage) in the Paleogene stratigraphic scale of Ukraine, into the regional Paleogene stratigraphic scale of the Voronezh anteclise. The structure of the Sergeevka Formation and hypostratotype of the Tishki Formation defined in this section are considered with the analysis of the distribution of nannofossils, foraminifers, and diatoms in corresponding deposits. Benthic and planktonic foraminifers are used for defining regional biostratigraphic units, which are correlated between each other, with zones of the standard stratigraphic nannofossil scale, and units of the Middle Eocene Kiev regional stage of northern Ukraine. The boundary between the formations under consideration is universally marked by the replacement of carbonate sediments by terrigenous‒siliceous facies, disappearance of calcareous fossils, and development of a new biota. These features allow the boundary between these formations to be conditionally correlated with that between the Keresta and Kuma regional stages of the North Caucasus region.