Contents

Doklady Earth Sciences

Vol. 524, No. 2, 2025

STRATIGRAPHY

The First Detailed δ13Соrg Record in the Asselian Deposits of Western Verkhoyanie, Northeastern Russia

R. V. Kutygin, V. I. Makoshin, A. S. Biakov, N. G. Nurgalieva, and B. I. Gareev p. 23  abstract

GEOCHEMISTRY

Geochemistry and Petrogenesis of Kong Chro Granitoid, Kontum Massif, Central Vietnam

Pham Minh, Truong Chi Cuong, Doan Dinh Hung, Pham Trung Hieu, Pham Hong Phong, and Nguyen Thi Truong Giang p. 24  abstract

SEISMOLOGY

Beltir Earthquake, February 15, 2025 (Ms = 5.7, Altai Mountains): Results of Geological and Seismological Research in the Nearby Zone

A. N. Ovsiuchenko, R. N. Vakarchuk, A. S. Larkov, N. G. Koshevoy, Y. V. Butanayev, Academician S. A. Tikhotsky, R. E. Tatevosyan, I. E. Parini, I. V. Matveev, and O. Yu. Kashitsyna p. 25  abstract

OCEANOLOGY

Experimental Validation of a Long-Range Underwater Acoustic Communication Method in the Sea of Japan

A. A. Golov, V. V. Bezotvetnykh, and Yu. N. Morgunov p. 26  abstract

SOIL SCIENCE

Soil Organic Carbon Pools: Isolation Methods, Sizes, and Ratios

V. M. Semenov, T. N. Lebedeva, D. A. Sokolov, N. B. Zinyakova, and Corresponding Member of the RAS V. N. Kudeyarov p. 27  abstract

GEOLOGY

King’s Trough: An Ancient Analogue of the Terceira Rift (North Atlantic)

A. A. Peyve, and A. A. Tkacheva p. 28  abstract

STRATIGRAPHY

Middle Eocene Carbonate Deposition and Sea-level Dynamics: Insights from the Zindapir Area, Eastern Sulaiman Range, Pakistan

Muhammad Jehangir Khan, Shahid Ghazi, Xiaodong Yang, Mubashir Mehmood, Bilal Wadood, Muhib Ullah, Umair Sarwar, Aftab Ahmad Butt, Tanveer Ahmad, and Ishfaq Ahmad p. 29  abstract

GEOCHEMISTRY

The First Discovery of Isotopic (δ34S, Δ33S) Sulfur Anomalies in Authigenic Sulfides from the Permian–Triassic Boundary Deposits of Siberia

S. V. Vysotskii, Academician A. I. Khanchuk, T. A. Velivetskaya, A. V. Ignatiev, Yu. D. Zakharov, V. V. Yakovenko, A. S. Biakov, I. V. Brynko, I. L. Vedernikov, and R. V. Kutygin p. 30  abstract

PALEONTOLOGY

The Occurrence of Suidae (Artiodactyla, Mammalia) in the Late Villafranchian Fauna of Crimea (Taurida Cave, Early Pleistocene) and the “Suid Gap” Hypothesis

Academician A. V. Lopatin p. 31  abstract

OCEANOLOGY

Propagation of Intermediate Waters in the North Atlantic

Ia. T. Samborskaia, A. N. Demidov, and Academician S. A. Dobrolubov p. 32  abstract

SOIL SCIENCE

Effect of Salt Solutions on Rheological Properties and Water Retention of Soils

G. N. Fedotov, Corresponding Member of the RAS S. A. Shoba, I. V. Gorepekin, D. A. Tarasenko, A. I. Suharev, T. G. Kalnin, Z. S. Sultanova, A. J. Purkhanova, and S. P. Sabirova p. 33  abstract

GEOCHEMISTRY

Research on Hydrothermal Rock Reaction and Hydrochemical Evolution Process: A Case Study of Yunnan Simao Basin

Lei Chen, Jinchuan Zhang, Xuan Tang, Jie Li, Yuhang Sun, Longfei Xu, and Qianchao Li p. 34  abstract

PETROLOGY

Late Cretaceous Rapakivi Granites and Associating Rocks in the Evolution of the Okhotsk-Chukotka Active Margin

A. E. Vernikovskaya, Corresponding member of the RAS V. Yu. Fridovsky, N. Yu. Matushkin, Ya. A. Tarasov, E. A. Bogdanov, N. V. Rodionov, and P. I. Kadilnikov p. 35  abstract

MINERALOGY

Graphite-Rare-Earth Mineralization of Picrites of the Ariadne Ultrabasite-Basite Massif (Promorye)

V. P. Molchanov, and Academician A. I. Khanchuk p. 36  abstract

First Discovery of Loparite-(Ce) in Carbonatites of the Guli Complex (Polar Siberia, Russia): Zoning of Crystals, Isomorphic Substitutions, and Genetic Features

K. N. Malitch, N. V. Sorokhtina, Academician L. N. Kogarko, Yu. V. Shchapova, I. Yu. Badanina, V. A. Bulatov, and N. S. Chebykin p. 37  abstract

GEOPHYSICS

The Effect of the Mineralogical Composition of the Martian Mantle on the Model Value of the Chandler Wobble Period

E. A. Kulik, and T. V. Gudkova p. 38  abstract

OCEANOLOGY

Internal Tide Near Critical Latitudes in the Norwegian Sea

Corresponding Member of the RAS E. G. Morozov, D. I. Frey, A. A. Klyuvitkin, and A. N. Novigatsky p. 39  abstract

GEOLOGY

First Find of Ordovician Granitoids in Senyavin Granite-Metamorphic Dome, East Chukotka: Age Substantiation and Composition Affinities

M. V. Luchitskaya, A. P. Isaeva, and Corresponding Member of the RAS S. D. Sokolov p. 40  abstract

First Results of U–Pb (LA-ICP-MS) Dating of Acidic Volcanic Rocks from Basal Horizons of the Upper Precambrian of the Subpolar Urals

A. M. Pystin, Yu. I. Pystina, O. V. Grakova, and V. B. Khubanov p. 41  abstract

STRATIGRAPHY

Maximum Depositional Age of Pre-Middle Paleozoic Terrigenous Rocks of the Vychegda Trough (Northeast of the East European Platform): Results of U–Pb Dating of Detrital Zircons

V. B. Ershova, V. N. Podkovyrov, A. S. Ivleva, and Corresponding Member of the RAS A. V. Maslov p. 42  abstract

TECTONICS

The Lower Proterozoic Metasandstones of the Sakukan Formation of the Udokan Complex of the South of the Siberian Craton—A Unique Object for the Early Precambrian Paleomagnetism?

V. Yu. Vodovozov, A. P. Belyakov, N. A. Bozhko, Corresponding Member of the RAS A. B. Kotov, V. P. Kovach, E. V. Adamskaya, and T. M. Skovitina p. 43  abstract

GEOPHYSICS

Investigation of the Development of Instability of Viscoelastic Geosystems Based on the Study of Stability and Instability of Elastic Systems of Comparison

E. I. Ryzhak and S. V. Sinyukhina p. 44  abstract

SEISMOLOGY

Automated Method for Merging Earthquake Catalogs with Duplicate Identification

I. A. Vorobieva, P. A. Malutin, and Corresponding Member of the RAS P. N. Shebalin p. 45  abstract