Fossil Coals (Gagates) from Pleistocene Sediments in Black Sea Terraces, Southeastern Crimea
Journal: Lithology and Mineral Resources
Year: 2021

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 co