Stratigraphy and Correlation of the Belovezhian Stage of the Pleistocene of Belarus Based on Palynology

Overview

This study examines the stratigraphic and temporal framework of the Belovezhian Stage of the Pleistocene in Belarus through palynological analysis. The Belovezhian Stage currently comprises three recognized substages: the Borkovian, Nizhninian, and Mogilevian. Palynological investigation and interregional correlation of deposits across Belarus provide evidence supporting the elevation of these substages to the rank of independent stages, aligning with earlier proposals from Belarusian stratigraphers. The research additionally establishes temporal correlations between the Korchevian interglacial, previously identified within the Narevian glacial complex, and the Mogilevian Substage, establishing their coeval status.

Methods and approach

The investigation employs palynological methodologies to characterize and correlate Pleistocene deposits throughout Belarus. Pollen analysis of stratigraphic sequences permits the reconstruction of paleobotanical conditions and the definition of floristically distinct assemblage zones. Interregional correlation procedures apply these palynological signatures to correlate strata across geographic areas within Belarus and with adjacent regions. This approach enables the assessment of substage-scale divisions and their potential elevation to stage-level significance based on recognizable palynological discontinuities and regional correlation patterns.

Key Findings

Palynological analysis of the three substages comprising the Belovezhian demonstrates sufficient paleobotanical distinctiveness and stratigraphic persistence to warrant classification as independent stages rather than subordinate divisions. The palynological character of each unit, combined with interregional correlation data, substantiates this taxonomic revision. Additionally, pollen assemblage correlation establishes that the Korchevian interglacial, heretofore attributed to the Narevian glacial succession, is chronologically equivalent to the Mogilevian interval, indicating a need for reassessment of its stratigraphic placement within the regional chronostratigraphic framework.

Implications

The elevation of the Borkovian, Nizhninian, and Mogilevian substages to stage rank reflects a refined understanding of Pleistocene stratigraphic divisions in Belarus based on empirical palynological data. This revision has consequences for regional chronostratigraphic nomenclature and the correlation of deposits across the Eastern European Platform. The proposed reclassification aligns paleontological evidence with established geological positions held by Belarusian researchers and provides stronger biostratigraphic foundations for these intervals.
The reassignment of the Korchevian interglacial from the Narevian glacial to temporal equivalence with the Mogilevian Stage necessitates reconsideration of glacial and interglacial cyclicity patterns in the Middle Pleistocene of Belarus. This correlation indicates that the Korchevian represents an interglacial phase within what may require reinterpretation of the Narevian complex's internal structure. Such revisions influence interpretations of climate variability and depositional patterns across the broader Eastern European sequence.

Scope and limitations

This summary is based on the study abstract and available metadata. It does not include a full analysis of the complete paper, supplementary materials, or underlying datasets unless explicitly stated. Findings should be interpreted in the context of the original publication.