Abstract
The marine Quaternary (Chaudian) terrace V in the outskirts of Sudak accommodates layers saturated with lenses and fragments of fossil coal scrutinized by the lithological, coal petrographical, and paleobotanical methods. The results show that this brown coal of the vitrinite composition can be defined as gagate (or jet), a variety of the humic coal formed mainly from the remnants of Araucariaceae or similar coniferous taxa. In terms of the microtexture and composition of plant remnants, this coal is similar to that in the basement bed of terrace V and was likely redeposited from sediments of the Callovian (Middle Jurassic) Kopsel Formation.
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This work was accomplished under the State Task of the Geological Institute, Russian Academy of Sciences (projects no. AAAA-A20-120030490100-6 and no. 0135-2019-0044) and the Institute of Geography, Russian Academy of Sciences (project no. 0148-2019-0007).
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Stukalova, I.E., Sadchikova, T.A., Chepalyga, A.L. et al. Fossil Coals (Gagates) from Pleistocene Sediments in Black Sea Terraces, Southeastern Crimea. Lithol Miner Resour 56, 523–534 (2021). https://doi.org/10.1134/S0024490221060079
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DOI: https://doi.org/10.1134/S0024490221060079