CHRONOZONAL STRUCTURE OF THE MANGAZEYA SUPERHORIZON IN EASTERN SIBERIA AND ITS PLACE IN THE GLOBAL ORDOVICIAN SCALE
Yu.I. Tesakov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Ordovician, stratigraphic scale, stage, stratotype, complex, superhorizon, horizon, chronozone
Abstract
The chronozonal structure of the Mangazeya Superhorizon of Eastern Siberia, which includes the Listvyazhny and Baksan horizons and their chronozones, is considered. Their volumes and stratotypes are given and their place in the regional and global stratigraphic structure is shown, where Mangazeya occupies the middle parts of the Kuzmovsky regional complex and the Caradocian stage of the Upper Ordovician. Proper names for the Lower Dolbor Horizon (Amutkansky) and the Upper Dolbor Horizon (Cherlechinsky) are introduced for the first time.
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