Famenian palynostratigraphy of the Volyn–Podillya margin of the East–Europian platform


  • Antonina V. Ivanina
Keywords: palynology, miospores, palynozones, Famenian, the Volyn-Podillia margin of the East-European platform

Abstract

Famenian carbonate-terrigenous deposits with thickness іn 300-580 m are widely distributed within the Volyn-Podillia margin of the East-European platform. It is the facies-varying complex of rocks, the stratification of which is very difficult because there are no faunal remains in the sediments (with the exception of the lower part). Therefore, during the study of this stratum, the palynological method and the palynostratigraphic division are very important. The main purposes of this study are to identify palynozones, distinguish their generalized description and to create a local scale of the palynological zonation - the vertical succesion of biozones. The material for research consists of more than 450 samples, selected from 31 boreholes. The main method is the facial-palynological analysis, or the method of palynoorictocenosis. This is the first study to perform the standardized description of the biostratigraphic units determined by the palynological data for the Famennian of the Volyn-Podillia margin of the East-European platform. In general, five palynozones are allocated in the Famennian. All palynozones are comprehensively documented thanks to numerous palynological data, characterized by a zonal spore assemblage, in the structure of which there are following categories of taxa: based on the vertical range characteristics - key, characteristic, transit ones; on the content - subdominant, accessory. According to spreading peculiarities of key and characteristic species the following types of bio-units are identified: the Range-Zone (two units) and the Concurent-Range Zone (three ones). General the Famenian deposits of the Volyn-Podillia margin of the East-European platform were palynologically subdivided into lebedianensis–magnificus (the oldest zone), varicornata, cassis–lupinovitchi, versabilis –hamulus, lepidophyta (the youngest unit) miospore zones. Palynozones with a thickness from 17 to 231 m are laterally widespreaded, recorded from a number of boreholes within Volyn-Podillya. They have a set of palynological features that allow easy recognition of deposits. Palynozones detail the sequence bedding, complement the paleontological characteristic and form the local palynological zonal scheme of the Famenian of the Volyn-Podillia margin of the East-European platform.

Author Biography

Antonina V. Ivanina
Ivan Franko National University of Lviv

References

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Published
2018-03-30
How to Cite
Ivanina, A. (2018). Famenian palynostratigraphy of the Volyn–Podillya margin of the East–Europian platform. Journal of Geology, Geography and Geoecology, 26(1), 71-78. https://doi.org/https://doi.org/10.15421/111808