Doklady Earth Sciences, 2026, V 527, N 2, April.

GEOLOGY

Age of Metavolcanic Rocks of the Kurumkan Formation of the Aldan Shield
S. D. Velikoslavinskii, V. V. Bortnikov, E. B. Sal’nikova, 
Corresponding Member of the RAS A. B. Kotov, E. V. Tolmacheva, 
V. P. Kovach, Yu. V. Plotkina, T. M. Skovitina, and 
N. Yu. Zagornaya 
p. 22  

Neoproterozoic (683‒658 Ma) High-K Differentiated Volcanics
in the Rear of an Active Continental Margin 
(Northwest of the Central Taimyr Belt)
M. K. Danukalova, D. A. Sarapulova, A. B. Kuzmichev, 
A. S. Vasiliev, and A. S. Dubenskiy 
p. 23  

PETROLOGY

A-Type 1.96 Ga Granites in the Onega Large Igneous 
Province, Karelian Craton
V. V. Ustinova, A. V. Stepanova, M. A. Sukhanova, 
E. B. Salnikova, K. G. Erofeeva, 
Corresponding Member of the RAS A. V. Samsonov, K. N. Bessmertnyi, 
O. A. Maksimov, O. M. Silaeva, and A. A. Fedorov 
p. 24  

GEOPHYSICS

A New Method for Active Vibroseismic Monitoring 
of Multiscale Geodynamic Processes
A. P. Grigoryuk, Corresponding Member of the RAS 
A. L. Sobisevich, V. V. Kovalevsky, and L. P. Braginskaya 
p. 25  

OCEANOLOGY

Estimates of Statistical Parameters of Sea Spray during 
Hurricane Winds in Field Conditions Based on Large-Scale 
Laboratory Modeling
Yu. I. Troitskaya, D. A. Sergeev, O. S. Ermakova, 
A. N. Zotova, M. I. Vdovin, and I. M. Kraev 
p. 26  

GEOLOGY

Mesoproterozoic (?) Arcose Sandstones in the Kiselikha 
Terrane (Northwestern Yenisei Ridge) Composed of 
Disintegrated Material of the Underlying Siberian Basement
A. B. Kuzmichev, E. F. Babitsky, M. K. Danukalova, 
and A. S. Dubenskiy 
p. 27  

LITHOLOGY

Data on Modern Sedimentation Rates in the 
Western Aleutian Trench
I. A. Bekesha, I. S. Usyagina, V. V. Sattarova, 
and Shamik Dasgupta 
p. 28  

STRATIGRAPHY

Detrital Zircon U–Th–Pb Age of the Ediacaran–Cambrian 
Transitional Deposits in Northern Belarus 
(Severo-Polotskaya Borehole)
T. S. Zaitseva, E. Yu. Golubkova, Corresponding 
Member of the RAS A. B. Kuznetsov, K. A. Dubkova, 
T. V. Voskoboynikova, and E. A. Kushim 
p. 29  

PETROLOGY

Early Carboniferous Magmatic Complexes of the Central 
Okhotsk Massif: First U–Pb Ages and Their Implications 
for Paleotectonic Reconstructions of Northeast Asia
V. N. Aleksandrov, A. K. Khudoley, V. V. Shatov, 
and V. A. Plaksina 
p. 30  

SOIL SCIENCE

Quantitative Assessment of Soil Cover Patterns and Local 
Pedodiversity in Unploughed Haylands and Pastures: 
a Case Study in the Central Russian Upland
M. A. Smirnova, A. N. Gennadiev, and Yu. G. Chendev 
p. 31  

STRATIGRAPHY

Palynomorphs–Indicators of the Redeposition of Ammonites 
in the Jurassic–Cretaceous Boundary Interval of 
the European Part of Russia
A. V. Lidskaya and M. A. Rogov 
p. 32  

GEOCHEMISTRY

Isotopic and Geochemical Indicators of Hydrocarbon Gases 
and Oil and Gas Prospects in the Middle 
Amur Sedimentary Basin
A. I. Gresov, E. P. Razvozzhaeva, P. N. Prokhorova, 
and D. A. Shvalov 
p. 33  

MINERALOGY

Ilmenite Oxybarometry and Its Application for the 
Forecasting the Diamondiferous and Barren Kimberlites
S. K. Simakov and V. N. Ustinov 
p. 34  

PALEONTOLOGY

Late Neopleistocene Vegetation and Environments of the 
Mammoth Calf Yana (Mammuthus primigenius (Blumenbach, 1799)) 
in the Batagay Section (Yakutia) Based on Microfossil Data
O. G. Zanina, D. A. Lopatina, G. P. Novgorodov, 
and M. Yu. Cheprasov 
p. 35  

OCEANOLOGY

Distribution of Modern Benthic and Planktic Foraminiferal 
Assemblages in the Kara and Laptev Seas Based 
on the “Arktika-2021” Expedition Materials
Ya. S. Ovsepyan, V. V. Smirnova, E. E. Taldenkova, 
and M. S. Makhotin 
p. 36  

GEOLOGY OF ORE DEPOSITS

Extremely Wide Variations in the δ34S Values of Sulfides 
from the Marinskoye Gold Deposit (the Southern Verkhoyansk 
Region, Northeast of Russia): Evidence for the Participation 
of Sulfur from Sedimentary Strata of Different Ages
Corresponding Member of the RAS V. Y. Fridovsky, 
Corresponding Member of the RAS E. O. Dubinina, 
Y. A. Tarasov, L. I. Polufuntikova, and M. V. Kudrin 
p. 37  

GEODYNAMICS

Rub’ al-Khali Basin on the Arabian Plate. Crustal Subsidence 
Caused by Metamorphism and Rock Contraction in the Lower Crust
Academician E. V. Artyushkov and P. A. Chekhovich 
p. 38  

PALEOGEOGRAPHY

Continental Chemical Weathering and Paleoclimatic 
Implications of the Chang 7 Member, Yanchang Formation,
Ordos Basin, Central China
Bo Chen, Yuxuan Zhou, Jianing Du, Wenjie Niu, 
Yijun Wang, Tao Li, Qihong Lei, Yongchao Dang, 
Leifei Wang, and Jinbo Zhang 
p. 39  

GEOPHYSICS

On Shear Stiffness Providing Stability of Anomalously 
Stratified Geomass of Compressible Material
E. I. Ryzhak and S. V. Sinyukhina 
p. 40  

SEISMOLOGY

One of the Reasons for the Relatively Low Intensity 
of Seismic Vibrations in the Territory of 
Petropavlovsk-Kamchatsky during the July 30, 2025 Earthquake
A. S. Aleshin and A. K. Maryatov 
p. 41  

GEOPHYSICS

The Relationship between Mud Volcanism and the Formation 
of Gas Hydrates in the Process of Unsteady Filtration 
of Methane-Containing Fluid Inside the Structures of the Seabed
E. I. Suetnova, Corresponding Member of the RAS A. L. Sobisevich, 
D. A. Zharkov, R. A. Zhostkov, and I. N. Puzich 
p. 42