Contents

Geochemistry International


Vol. 61, No. 3, 2023


Geochemistry, Age, and Geodynamic Setting of the Volcanic Rocks of the Indigirka Section of the Uyandina-Yasachnaya Volcanic Belt (Northeast Asia)

A. V. Ganelin, M. V. Luchitskaya and M. V. Maskaev p. 211  abstract

Physicogeochemical Mechanisms of the Genesis of Matryoshka-Type Diamonds on the Basis of the Mantle-Carbonatite Theory

Yu. A. Litvin p. 238  abstract

Crystallogenetic Causes of the Unique Shape of the Matryoshka Diamond: The Effect of Capturing a Diamond Inclusion of Twin Diamond Crystals

A. D. Pavlushin and D. V. Konogorova p. 252  abstract

Formation of Nitrogen-Rich Hot Springs in the Water–Granite and Water–Porphyrite Systems

S. Kh. Pavlov and K. V. Chudnenko p. 265  abstract

Environment-Forming Effect of Bubble Gas Emissions in the Golubaya Bay, Black Sea: Oxygen Regime and Bacterial Mats

T. V. Malakhova, A. I. Murashova, I. N. Ivanova, A. A. Budnikov, L. V. Malakhova, E. A. Krasnova, O. A. Rylkova and N. V. Pimenov p. 274  abstract

The Content and Speciation of Radionuclides in Water and Bottom Sediments of the Laptev Sea

T. A. Goryachenkova, A. V. Travkina, A. P. Borisov, G. Y. Solovyova, I. E. Kazinskaya, A. N. Ligaev and A. P. Novikov p. 285  abstract

Evaluation of Mineralogical Composition and Organic Matter Content of Oil Shales by IR Microscopy

N. G. Tanykova, Yu. Yu. Petrova, M. Yu. Spasennykh, E. A. Vtorushina, M. G. Kul’kov, M. N. Vtorushin, V. M. Kuklina, S. V. Nekhoroshev, E. V. Kozlova and J. V. Kostina p. 293  abstract

Major, Trace Element and Sr–Nd–Pb Isotopic Geochemistry of Gorshkov Vent (18.02–21.03.2021), Klyuchevskoy Volcano (Kamchatka, Russia): Restarting a New Cycle of Volcanic Activity?

O. V. Bergal-Kuvikas, A. V. Chugaev, Y. O. Larionova, R. I. Cherkashin, I. A. Nuzhdaev and Y. D. Muravyev p. 302  abstract