Lower Permian Conodont Biostratigraphy and Sequence Stratigraphy of the Aktasty Hills Section, Southern Ural Mountains, Kazakhstan

TL;DRAbstract

Upper Paleozoic strata of the Pre-Uralian Foredeep in the southern Ural Mountain region of Russia and Kazakhstan comprise the type area of the Cisuralian Series (Lower Permian), consisting of Asselian, Sakmarian, Artinskian, and Kungurian stages. Current studies in the region will establish stratotypes and precise chronostratigraphic stage and substage boundaries of the Cisuralian based on biostratigraphic and sequence stratigraphic data. Both serve as powerful tools for correlating Cisuralian stages worldwide via recognition of widely distributed faunal and eustatic sequence boundaries. The Aktasty Hills stratigraphic section is a succession (1120 m) of marine/marginal marine strata of Lower Permian (upper Asselian through late Artinskian (Baigendzhinian) age in northwestern Kazakhstan. Mixed carbonate and siliciclastic strata exposed at Aktasty were deposited in the Pre-Uralian foredeep; a foreland basin produced during the Late Paleozoic Uralian orogeny. Relative sea-level changes i

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