This paper analyzes geochemical characteristics and mineral composition of Pleistocene and Holocene deposits, suggesting genetic relationships between deposit groups.
In this paper we present a comprehensive comparative lithological and geochemical characteristics of the Quaternary (Middle Pleistocene-Holocene) formations of the Moscow syneclise within the Chashnikovo Depression. Based on the results of X-ray fluorescence analysis, the normative mineral composition was calculated using the MINLITH program. Data on the content of major petrogenic oxides and normative mineralogy for deposits of glacial, fluvioglacial, lacustrine, fluvial and eolian-deluvial genesis were analyzed using the principal component analysis. As a result of statistical processing, 3 groups were identified that are characterized by a common mineralogical composition and geochemical features. It is suggested that these groups are temporary genetic series of deposits, where the material of more ancient deposits served as a source for the formation of subsequent ones. The article discusses the issue of calculating the CIA petrochemical index as applied to these deposits.
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Gabdullin et al. (2025) studied this question.
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