Stratigraphy and lithology
Section editor – PhD in geology and mineralogy Kirichkova A.I.
Article # 19_2016
24 p.
pdf  Continental Jurassic stratigraphy of Irkutsk amphitheater
The article clarifies the taxonomic composition of taphoflora in scattered outcrops sections of Jurassic continental deposits within Irkutsk surrounding area, the right bank of Angara River, Cheremkhovsky and Azejsky coal pits where the formation included in exploration were first identified. For the first time the results of paleo-flora research has become the fundamental basis for substantiation of spatial ratio of deposits from scattered outcrops and stratigraphic position of previously established here stratigraphic units in the unified section of the Jurassic strata of the Irkutsk basin. The sequence of lithostratigraphic units in the coal-bearing strata section was adjusted along with their nomenclature and distribution within the stratotype area of the basin. Two phytostratigraphic alternating complex along the section were distinguished - Cheremkhovsky and Pre-Sayan. Preliminary comparative analysis of the taxonomic composition of Irkutsk taphoflora and taphoflora of Western Siberia has revealed their full identity, allowing to more confidently to justify the age of the phytostratigraphic plant complexes of continental Jurassic within Irkutsk basin and corresponding lithostratigraphic units - the end of the Early and the first half of the Middle Jurassic.

Keywords: Jurassic continental deposits, lithostratigraphic units, spatial relations, Lower and Middle Jurassic, taphoflora, phytostratigraphic complexes, Irkutsk coal basin.
article citation Kirichkova A.I., Kostina E.I., Nosova N.V. O stratigrafii kontinental'noy yury Irkutskogo amfiteatra [Continental Jurassic stratigraphy of Irkutsk amphitheater]. Neftegazovaya Geologiya. Teoriya I Praktika, 2016, vol. 11, no. 2, available at: http://www.ngtp.ru/rub/2/19_2016.pdf
DOI https://doi.org/10.17353/2070-5379/19_2016
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