Upper Cretaceous sediments in the Russian Plate: Sequence stratigraphy and Milankovitch cycles |
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| Authors: | R R Gabdullin |
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| Institution: | (1) Moscow State University, Moscow, Russia |
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| Abstract: | The paper discusses integrated sequence-cyclostratigraphic analysis of Upper Cretaceous sediments based on 9 sections in the Russian Plate (the Voronezh Anteclise and the Ulyanovsk-Saratov Basin). Tracts (transgressive and highstand) were for the first time recognized in sections of this region and compared with member-by-member subdivision, bed rhythmites, and Milankovitch cycles indicating their orders. Certain rhythmites and the Milankovitch cycles, which produced them, were tied to the Cyclostratigraphic Scale of the Upper Cretaceous sediments. Data on paleogeographic sedimentation environments, such as sedimentation depth, temperature, sedimentation rate, etc. and paleocoenoses are presented and paleogeographic models of rhythmic structure formation were reconstructed. |
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