Contents

Geochemistry International

Vol. 61, No. 2, 2023

Nature of Hydrocarbon Fluids at the Fields in the North of Western Siberia: the Geochemical Aspect

I. V. Goncharov, M. A. Veklich, N. V. Oblasov, V. V. Samoilenko, S. V. Fadeeva, R. S. Kashapov, P. V. Trushkov, A. V. Zherdeva and N. A. Smirnova p. 103  abstract

Geochemistry of Hydrocarbons-Biomarkers and Carbon Isotopes of Organic Matter in the Domanik Deposits of the Timan–Pechora Basin

D. A. Bushnev, N. S. Burdelnaya and M. A. Bolshakova p. 127  abstract

Applicability Limits of the Maturity Concept in Organic Geochemistry

M. B. Smirnov, N. P. Fadeeva and N. A. Vanyukova p. 137  abstract

Peculiarities of CH4 and CO2 Distribution in Sediments of the Arctic Seas

V. S. Sevastyanov, V. Yu. Fedulova, O. V. Kuznetsova, S. G. Naimushin, N. V. Dushenko, V. S. Fedulov, A. P. Krivenko, A. I. Malova and E. A. Tkachenko p. 150  abstract

Hydrocarbons in Water and Bottom Sediments of the Norwegian–Barents Sea Basin

I. A. Nemirovskaya and A. V. Khramtsova p. 160  abstract

Biogeochemistry of Natural Organic Compounds in Terrestrial Waters: Distribution and Variability during Climate Warming

T. I. Moiseenko and M. I. Dinu p. 174  abstract

Organic Compounds and Metals in the Sediments of Meromictic Lakes Separated from the Kandalaksha Gulf of the White Sea

D. F. Budko and I. A. Nemirovskaya p. 184  abstract

Geochemical Significance of Bicyclic Sesquiterpanes in the Hydrothermal Oil of the Uzon Volcano Caldera (Kamchatka)

I. V. Konopleva and V. S. Sevastianov p. 203  abstract