Doklady Earth Sciences, 2025, V 522, N 2, June.

STRATIGRAPHY

Magnetostratigraphy of the Upper Cretaceous Reference 
Section in the Caucasian Mineralnye Vody Region 
(the Podkumsky Quarry)
A. Yu. Guzhikov, E. Yu. Baraboshkin, 
N. V. Kravtsov, M. A. Ustinova, N. A. Rtishchev, 
and S. A. Zemlyanskiy 
p. 24  

GEOCHEMISTRY

The Component Composition of Fluid Phase during 
Crystallization of Subcalcic Chromium Garnet at High Pressure
A. A. Chepurov, A. A. Tomilenko, V. V. Lin, V. M. Sonin, 
E. I. Zhimulev, T. A. Bul’bak, A. I. Chepurov, and 
Academician N. P. Pokhilenko 
p. 25  

PALEOGEOGRAPHY

Relative Sea-level Changes in the Southern Part of 
the Onega Bay of the White Sea in the Late Glacial and the Holocene
A. V. Ludikova, D. A. Subetto, D. D. Kuznetsov, 
and P. A. Leontev 
p. 26  

GEOPHYSICS

Geophysical Effects of the Earthquake in the 
Black Sea on January 12, 2025
Academician V. V. Adushkin, A. A. Spivak, 
Yu. S. Rybnov, S. A. Riabova, and A. V. Tikhonova 
p. 27  

OIL AND GAS GEOLOGY

Geoscience-engineering-integration for Efficient 
Development of Tight Sandstone Gas Reservoirs-case 
of Sha II Member in NW Sichuan Basin
Kai Yu, Qingyuan Deng, Botao Tang, Deyu Zhu, Xiran Yang, 
Yan Feng, Xi Yang, Chunyu Qin, Bao Jia, and Wenbin Tang 
p. 28  

GEOLOGY OF ORE DEPOSITS

Two Stages in Formation of the Yakhton 
Tungsten-Polymetallic-Gold Deposit (Southern Tien Shan, Uzbekistan): 
First Isotopic U–Pb Age Data on Zircon (LA-ICP-MS Method) 
from Intrusive Rocks of the Yakhton Stock
S. G. Soloviev, S. G. Kryazhev, D. V. Semenova, 
Yu. A. Kalinin, and Academician N. S. Bortnikov 
p. 29  

GEOCHEMISTRY

Uptake of Dissolved Fluorine from Seawater 
during Halmyrolysis of Igneous Rocks
A. V. Savenko, and V. S. Savenko 
p. 30  

GEOPHYSICS

Core Complexes of the Gakkel Ridge
A. L. Piskarev, Academician V. D. Kaminsky, E. A. Dergileva, 
A. A. Kireev, G. I. Ovanesian, E. S. Ovsiannikova, 
V. A. Savin, O. E. Smirnov, S. N. Tabyrtsa, and 
D. V. Elkina 
p. 31  

PROBLEMS OF TERRESTRIAL WATERS

Spatiotemporal Patterns of Long-Term River 
Runoff Dynamics in the Ural River Basin
Zh. T. Sivokhip, V. M. Pavleychik, and 
Academician A. A. Chibilev 
p. 32  

GEOLOGY

Age and Tectonic Position of Mesoproterozoic 
Rhyolites and Early Ordovician Granites in the 
Burkhan Anticlinorium of the North Tianshan 
(Eastern Kyrgyzstan)
D. V. Alexeiev, A. V. Kushnareva, A. K. Khudoley,
 V. V. Shatov, and A. A. Tretyakov 
p. 33  

STRATIGRAPHY

The “Washout Shales” of the Bakal Ore Field 
(Southern Urals) are Analogues of the Mashak Volcanites
V. M. Gorozhanin, S. V. Michurin, M. T. Krupenin, 
Corresponding Member of the RAS N. B. Kuznetsov, 
and T. V. Romanyuk 
p. 34  

GEOCHEMISTRY

The First Data on the Age of Spodumene Pegmatites 
from the Kolatan Deposit (Nuristan Province, Afganistan) 
on the Basis of U–Pb (ID-TIMS) Dating of Columbite
N. A. Sergeeva, N. G. Rizvanova, A. Yosufzai, 
Corresponding Member of the RAS A. B. Kuznetsov, 
S. G. Skublov, O. L. Galankina, and A. N. Evdokimov 
p. 35  

PROBLEMS OF WATERS  OF LAND

Multiple Rivers Impact on Nearshore Sand Structures 
Formation: Evidences from Türkiye’s Southwest, Erdek Bay
Hande Aykurt Vardar, and Aslıhan Nasıf Dondurur 
p. 36  

GEOECOLOGY

Chronological Attribution of Iron-Smelting 
Furnaces and Landscapes of the Chuya–Kurai 
Paleo-Metallurgical Province (Russian Altai) 
Based on Tree-Ring Analysis and Radiocarbon Dating
A. R. Agatova, R. K. Nepop, V. S. Myglan, 
V. V. Barinov, and A. V. Petrozhitskiy 
p. 37  

GEOLOGY

Iron Ore Series of the Sarysu–Teniz Watershed (Central Kazakhstan): 
Age Substantiations and Formation Setting
A. N. Zhuravlev, A. A. Tretyakov, N. A. Kanygina, 
and Academician K. E. Degtyarev 
p. 38  

GEOCHEMISTRY

U‒Pb Age and Chemical Characteristics of Ti-Rich Andradites 
from Vein Calcite–Silicate Rocks of the Akhmatovskaya 
and Perovskitovaya Mines in the South Urals
V. S. Stativko, M. V. Stifeeva, E. B. Salnikova, C
orresponding Member of the RAS A. B. Kuznetsov, 
Corresponding Member of the RAS A. B. Kotov, 
and V. V. Smolensky 
p. 39  

GEOPHYSICS

Development of Theory of Amplitude Methods in 
Surface-Wave Seismoacoustic Studies
Corresponding Member of the RAS A. L. Sobisevich, 
D. A. Zharkov, and R. A. Zhostkov 
p. 40  

OCEANOLOGY

A First Ikaite Find in Bottom Sediments of the East Siberian Sea
O. N. Kolesnik, A. N. Kolesnik, A. A. Gorbarev, A. A. Karabtsov, 
E. G. Vologina, and N. V. Zarubina 
p. 41  

GEOLOGY

Dating of the Sedimentary Cover Reflectors and Evaluation 
of the Sedimentation Rates in the Late Pliocene–Quaternary 
in the King’s Trough and Vicinity (the North Atlantic)
V. A. Bogoliubskii, S. Yu. Sokolov, A. P. Denisova, 
and K. O. Dobroliubova 
p. 42  

PETROLOGY

New Data on the Age of Magmatism of the Pripyat–Dnieper–Donets 
Paleo-Rift (Belarus)
A. A. Nosova, O. F. Kuzmenkova, A. V. Kargin, L. V. Sazonova, 
A. V. Travin, and D. S. Yudin 
p. 43  

TECTONICS

Late Quaternary Activity and Paleoseismicity of the Ritu Fault 
in the Western Bangong-Nujiang Suture Zone, Tibetan Plateau
Zhang Chong, Li Dewen, Li Jinzhao, Zeng Haoxuan, 
Miao Gaojian, and Liu Zhenming 
p. 44  

PALEOGEOGRAPHY

Big Lost Geomagnetic Excursion Recorded in the Loess-Paleosol 
Sequence in the Southern Part of European Russia, Otkaznoe Section
V. I. Dudanova, E. A. Konstantinov, A. M. Pasenko, 
N. V. Sychev, and R. V. Veselovskiy 
p. 45  

CLIMATE PROCESSES

Near-Surface Temperature and Climate 1750–600 Ma Ago by 
the Example of Clay Rocks of the Riphean Stratotype 
(the Southern Urals)
Corresponding Member of the RAS A. V. Maslov, 
and O. Yu. Melnichuk 
p. 46