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Palynology of Jurassic (Bathonian) sediments from Donbas, northeast Ukraine
Institute of Geological Sciences, National Academy of Sciences of Ukraine, Kyiv, Ukraine.
Swedish Museum of Natural History, Department of Paleobiology.
Swedish Museum of Natural History, Department of Paleobiology. Department of Geology, Lund University, Sweden.ORCID iD: 0000-0003-2987-5559
2018 (English)In: Palaeobiodiversity and Palaeoenvironments, ISSN 1867-1594, E-ISSN 1867-1608, Vol. 98, no 1, p. 153-164Article in journal (Refereed) Published
Abstract [en]

A palynological and sedimentological study of an outcrop succession adjacent to the village of Kamyanka within the Kharkiv region of northeast Ukraine was carried out. The successions occur within the Dnieper–Donets Basin, which hosts vast successions (> 20 km) of post mid- Devonian strata and is one of the main hydrocarbonproducing basins in Europe. Middle Jurassic sandstones, siltstones and claystones represent the sedimentary successions at the Kamyanska locality. Few palynological studies have been performed on the Jurassic of Ukraine and even fewer presented in the international literature. Thirty spore taxa and 21 pollen taxa were identified, together with taxa kept in open nomenclature (e.g. bisaccate pollen). Two palynological assemblages were identified within the Kamyanska succession (assemblages A and B) dated as Bathonian. Assemblage A is dominated by the fern spores (Cyathidites and Osmundacidites) and gymnosperm pollen produced by Cupressaceae Perinopollenites elatoides), ginkgophytes/Cycadales/Bennettitales (monosulcates) and Cheirolepidiaceae (Classopollis). Assemblage B differs in also comprising high abundances of Gleicheniidites and higher percentages of Pinuspollenites and Araucariacites compared to assemblage A. Another difference between the two units is the high relative abundance of seed fern pollen (Alisporites) in the upper part of assemblage B. The thermal alteration index (TAI) of the palynomorphs is estimated to range from 3 to 3.5, indicating a burial depth corresponding to the mature main phase of liquid petroleum and, to some extent, gas generation. Comparisons between the miospore and macrofloral assemblages show that the palynoflora and macroflora are strongly similar at broad taxonomic levels. Importantly, the miospore assemblages described here compare well with European Middle Jurassic assemblages indicating limited provincialism, with similar vegetation extending from eastern Ukraine and across most of Western Europe.

Place, publisher, year, edition, pages
Berlin: Springer Berlin/Heidelberg, 2018. Vol. 98, no 1, p. 153-164
Keywords [en]
Mesozoic, Kamyanka, Petroleum, Vegetation, Thermal alteration index (TAI), Dnieper–Donets Basin
National Category
Geosciences, Multidisciplinary
Research subject
Ecosystems and species history
Identifiers
URN: urn:nbn:se:nrm:diva-2914DOI: 10.1007/s12549-017-0310-3OAI: oai:DiVA.org:nrm-2914DiVA, id: diva2:1258342
Funder
Swedish Research Council, 2013-6702
Note

The authors acknowledge the Karazin Kharkiv National University, the host organisation of the 100th anniversary of V.P. Makrydin during which the samples were collected. This is a contribution to the UNESCO/IGCP project 632, Continental Crises of the Jurassic: Major Extinction Events and Environmental Changes Within Lacustrine Ecosystems. The authors further acknowledge the support of the Swedish Research Council (Research links, 2013-6702), for O.S. and V.V. and that of Lund University Carbon Centre (LUCCI) for S.S. and V.V.

Available from: 2018-10-24 Created: 2018-10-24 Last updated: 2019-01-07

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Publisher's full texthttps://doi.org/10.1007/s12549-017-0310-3

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