ON THE NATURE OF AQUEOUS CYCLES

In present paper cyclicity of sedimentary rocks was discussed on example of so called cycles defined by Noinsky in classic outcrop of Upper Kazanian deposits near the village of Pechishi (river Volga, near the city of Kazan). The analysis of cyclicality is based on layers-thickness distributions and isotope ratios of carbon, oxygen and strontium in carbonate component of the section.