Palynology and petrology of Upper Miocene lignite from the coastal zone of field "A", the Kovin deposit (Serbia)

The paper presents the results of palynological research of lignite and sedimentary rocks, as well as petrology of lignite from the "A" field of the Kovin deposit, Serbia. The palynological data suggest changes in the vegetation during the deposition of organic matter with several well-developed zones in Late Miocene palaeomire. Palynofacies analysis indicate changes in palaeoenvironment from fluvio-deltaic with accumulation of siliciclastic, transition from distal dysoxic-anoxic, suboxicanoxic to proximal suboxic-anoxic and reducing environment. The palynomorphs indicate wet humid swamp environment in alternations of drier and very dry arid environment. Maceral composition is in accordance with palynological data and support proposed reconstruction of palaeoenvironmental conditions in mire during deposition. The remains of charcoal, composed mostly of pyrofusinite in the I coal seam confirm dry and hot period.