Abstract
The facies own, the composition of weathering source rock, the degree of chemical weathering and the recycling were defined based upon the analysis of detailed geochemical and petrochemical characteristics of the Upper Vendian and the Lower Cambrian argillites for south-western skirt of the East-European platform (region of Dniester perikraton) make use the chemical index of alteration (CIA), the chemical index of weathering (CIW), plagioclase index of alteration (PIA), the weathering indexes (WR, WI-1, WI-2) and K2O/Al2O3 ratios for the paleogeographycal and paleogeodynamical reconstructions.
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