Possible influence of CaO admixture in the Pre-Ural Foredeep terrigenous rocks on the determination of the source rocks composition based on geochemical data
Abstract:Research subject. The article discusses the analysis results of correlations between the calcium oxide content and a number of other rock-forming oxides in the Asselian sandstones and in the Middle–Upper Permian clay rocks of the Pre-Ural trough with some of their inherent ratios of rare and trace elements (La/Sc, Th/Cr, Th/Co, Ce/Cr, etc.), which act as traditional indicators of source rocks composition.Methods. Our main method is to analyze the correlation coefficients values between different pairs of oxide… Show more
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