Vol. 61, No. 7, 2023

Geochemistry International

Feldspar Megacrysts as a Source of Information on Crustal Contamination of Basaltic Melt

E. I. Demonterova, A. V. Ivanov, S. V. Palessky, V. F. Posokhov, N. S. Karmanov and L. A. Pel’gunova p. 669 abstract

A Stepwise Dissolution Method Applied to Isotopic Chemostratigraphic and Geochronological Studies of Riphean Carbonate Rocks of the Baykit Uplift

I. M. Gorokhov, I. M. Vasil’eva, A. B. Kuznetsov, N. G. Rizvanova and G. V. Konstantinova p. 687 abstract

On the Formation of Diasteranes in Oil and Organic Matter of Rocks

A. A. Yusupova, M. V. Giruts, A. V. Vasil’eva, D. S. Vylekzhanina and G. N. Gordadze p. 703 abstract

Conversion of the Oil and Gas Generation Potential of the Deep Source Formations of the West Siberian Basin: An Example of Well Tyumen SG-6

Yu. I. Galushkin p. 711 abstract

Heavy Metals and Organic Carbon in the Bottom Sediments of Shallow Bights of the Peter the Great Bay

A. A. Ryumina, P. Ya. Tishchenko and E. M. Shkirnikova p. 724 abstract

Sodalite: Spectroscopic and Thermochemical Investigations

Yu. D. Gritsenko, E. N. Eremina, M. F. Vigasina, S. V. Vyatkin, L. P. Ogorodova, V. V. Maltsev and L. V. Melchakova p. 735 abstract

Microwave Preparation of Geological Samples in UltraWAVE System for the Determination of Platinum Group Elements and Rhenium by Mass-Spectrometric Isotope Dilution

S. V. Palesskiy, I. V. Nikolaeva and O. A. Kozmenko p. 744 abstract

Distribution Pattern and Influencing Factors of Soil Selenium in Northern Hebei Province, China

Liting Zhang, Zhijun Wang, Yuanchen Liu, Xi Wang, Xiaoyang Xie and Li Zhang p. 750 abstract

Modeling and Predicting the Environment State in the Impact Area of a Copper–Nickel Plant: A Balanced Model of the Transformations of Atmospheric Deposition at the Catchment and in Lake

A. V. Sokolov, T. I. Moiseenko, N. A. Gashkina and Yu. G. Tatsiy p. 768 abstract

Contents

Geochemistry International