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Palaeoenvironmental conditions of the formation of sediments of the Early Pliocene of Ukrainian Plain and the vegetation cover dynamics
Author(s) -
Sirenko Olena
Publication year - 2021
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.4053
Subject(s) - neogene , vegetation (pathology) , geology , period (music) , paleontology , cenozoic , late miocene , coastal plain , structural basin , physical geography , geography , medicine , physics , pathology , acoustics
The palaeoenvironmental conditions of Pliocene sedimentation were rather different in the southern, central, and northeastern parts of Ukraine. In the southern regions, the transgressional–regressional phases of the Kimmerian marine basin influenced the vegetation cover. The Pliocene vegetation of the central and northeastern regions is driven by long‐term and short‐term climatic changes. The reconstruction of Early Pliocene vegetation is carried out according to the results of spore‐pollen analysis of Lower Pliocene marine and continental deposits exposed in 12 sections located within the Ukrainian Plain. Pollen data show, that regardless of the differences in palaeoenvironmental conditions in the studied regions, the general patterns of changes in vegetation composition of the plain part of Ukraine during the Early Pliocene can be clearly traced. The presently obtained patterns are closely related to global geological and climatic events. The Pliocene climatic optimum is timed to the middle Kimmerian. At that time, warmth‐loving broadleaf taxa occurred in the vegetation of the Ukrainian Plain. The developments of the Neogene vegetation of Ukraine clearly reflect the graduate cooling from the Miocene to Pliocene, and from the Early to Late Pliocene. In the composition of the Late Pliocene vegetation of Ukraine, thermophilic elements decreased in comparison to the Early Pliocene.