Lithological spectra patterns in the Permian continental stratigraphic records, the East of the Russian plate

Abstract

© 2020 IOP Publishing Ltd. All rights reserved. Stratigraphic sequences are interrupted cyclic records. Only 5-10% of the stratigraphic record is preserved in continental sediments. The most of the sedimentary history is not recorded in the sections due to the lack of sedimentation or erosion of sediments. Therefore, the lithological data series on continental sections very often represent records of a random process. This paper analyses the spectra of grain size, carbonate content and magnetic susceptibility of three continental sections of the Middle-Upper Permian (the Monastery Ravine and the Kzyl Bairak outcrops on the Volga river bank, the Sheremetievka outcrop on the Kama river bank) to estimate a quantity and a quality of stratigraphic records.