Doklady Earth Sciences, 2025, V 520, N 1.

GEOLOGY

Age and Geodynamic Position of Ophiolites
of Kurtushiba Ridge of Western Sayan
A. A. Mongush, N. I. Gusev, Ch. K. Oydup, 
Ch. O. Kadyr-ool, Ch. M. Hertek, F. P. Lesnov, 
and E. K. Druzhkova 
p. 1  

OIL AND GAS GEOLOGY

Petroleum Reservoir Potential of Cretaceous 
Siliciclastic Rocks of Tando Allahyar Field, 
Lower Indus Basin, Pakistan: Inferences from 
Petrophysics, Sequence Stratigraphy and 
Paleogeography
Abdul Basit, Anwar Qadir, Muhammad Raiees Amjad, 
Tofeeq Ahmad, and Salman Ahmed Khattak 
p. 2  

MARINE SCIENCE

Ikaite from Holocene Sediments of the Chukchi Sea
O. N. Kolesnik, A. N. Kolesnik, A. A. Karabtsov, 
Yu. P. Vasilenko, and A. A. Gorbarev 
p. 3  

CLIMATE PROCESSES

Estimates of Possible Changes in the Open-Water 
Period in the Russian Exclusive Economic Zone 
in the Arctic in the 21st Century
Academician V. A. Semenov, and E. A. Cherenkova 
p. 4  

GEOECOLOGY

Potential Hazard of Radioactive Contamination of 
the Marine Environment Due to Possible Earthquakes 
near the Kashiwazaki–Kariwa Nuclear Power Plant
M. V. Budyansky, M. Yu. Uleysky, M. A. Lebedeva, 
P. A. Fayman, and T. V. Belonenko 
p. 5  

OIL AND GAS GEOLOGY

Analysis of Fractures in the Rag-E-Safid Oil
Field Using Static and Dynamic Data
Seyyed Attaallah Seyed, Kouros Yazdjerdi, 
Abdolmajid Asadi, and Hossein Tabatabaei 
p. 6  

PETROLOGY

New Data on the Polychronic Early Paleozoic 
Alkaline Magmatism in the Tuva–Mongolian 
Massif of the Central Asian Orogeny Belt
A. A. Petlina, V. V. Vrublevskii, M. V. Stifeeva, 
Corresponding Member of the RAS A. B. Kotov,
and E. B. Salnikova 
p. 7  

MINERALOGY

A New Type of Pt‒Pd Mineralization in 
Chromitites of the Saranovskoye 
Deposit (Perm Krai)
P. B. Shiryaev, K. S. Ivanov, K. A. Dugushkina, 
R. S. Palamarchuk, Corresponding Member of 
the RAS V. N. Puchkov, S. Yu. Stepanov, 
and N. N. Farrakhova 
p. 8  

PALEONTOLOGY

Pterosaur Humerus from the Jurassic
Deposits of Volga Region
A. O. Averianov, and Academician A. V. Lopatin 
p. 9  

SOIL SCIENCE

Paleosol Finds in Devonian Sediments 
on the Spitsbergen Archipelago
Corresponding Member of the RAS A. O. Alekseev, 
T. V. Alekseeva, V. E. Demidov, P. I. Kalinin, 
and V. V. Malyshev 
p. 10  

GEOCHEMISTRY

Organic Compounds in Bottom Sediments of the Kolyma Moth Area
I. A. Nemirovskaya, Yu. S. Glyaznetsova, and 
Corresponding Member of the RAS S. K. Gulev 
p. 11  

Crystallization of a Monosulfide Solid Solution under 
Diamond Formation Parameters: Experiments 
in the Fe‒Ni–S System
N. Yu. Sharapova, A. V. Bobrov, A. V. Spivak, 
and Corresponding Member of the RAS Yu. B. Shapovalov 
p. 12  

Melt Inclusions in Minerals of Granulitic Xenoliths 
from Diatremes of Eastern Pamir, Tajikistan: 
Evidence of Incongruent Melting at the Crustal–Mantle Boundary
A. V. Korsakov, V. P. Chupin, D. V. Kuzmin, 
and Academician N. P. Pokhilenko 
p. 13  

TECTONICS

Analysis and Investigation of Babakoohi Anticline
Fractures Based on Clustering Technique Using 
K-means and Genetic Algorithm, and Paleostress 
Determination Using MIM Method, Shiraz, Iran
Hajar Kazemi, Kouros Yazdjerdi, Abdolmajid Asadi, 
and Mohammad Reza Mozafari 
p. 14  

GEODYNAMICS

The West Siberian Sedimentary Basin. Highly Heterogeneous
Crustal Subsidence: A Result of Metamorphism 
Catalyzed by an Influx of Mantle Fluids
Academician E. V. Artyushkov, and P. A. Chekhovich 
p. 15  

GEOLOGY

Provenance and Age of Volcanogenic–Terrigenous Rocks
of the Bastakh Series (Ilin–Tass Anticlinorium,
Northeast Russia)
S. N. Sychev, E. A. Brusnitsyna, O. Yu. Lebedeva, 
Corresponding Member of the RAS S. D. Sokolov, 
V. G. Danilov, V. B. Khubanov, and A. V. Rogov 
p. 16  

The Age of Ore-Bearing Skarns of the Gavasai 
Magnetite Deposit (Kyrgyzstan): Results of U‒Pb 
(ID-TIMS) Geochronological Studies of Garnet
M. V. Stifeeva, E. B. Salnikova, Corresponding 
Member of the RAS A. B. Kotov, and Yu. D. Gritsenko 
p. 17  

GEOLOGY OF ORE DEPOSITS

The Role of Multi-Stage Deformations in the 
Formation of the Aptian Orogenic Gold 
Mineralization of the Allakh-Yun Zone of 
the Okhotsk–Koryak Belt by the Example 
of the Marinskoye Deposit
Corresponding Member of the RAS V. Yu. Fridovsky, 
Y. A. Tarasov, L. I. Polufuntikova, and 
M. V. Kudrin 
p. 18  

GEOLOGY

U–Pb Age and Sr–Nd Isotopic Characteristics 
of the Dzhida Island-arc System Felsic and 
Intermediate Volcanites (Southwestern Transbaikalia): 
Transition to the Mature Arc Stage
A. L. Elbaev, Correspondent Member of RAS 
I. V. Gordienko, and V. M. Savatenkov 
p. 19  

Structure of the Ocean Bottom in the Junction 
Area of the King’s Trough and Gnitsevich 
Plateau (North Atlantic)
S. G. Skolotnev, A. A. Peyve, S. Yu. Sokolov, 
K. O. Dobrolyubova, I. A. Veklich, A. N. Ivanenko, 
V. A. Bogolyubskii, N. P. Chamov, V. N. Dobrolyubov, 
A. P. Denisova, I. S. Patina, V. L. Lyubinetskii, 
A. A. Tkacheva, D. M. Ilyukhina, and V. V. Fomina 
p. 20  

First Data on the Age and Geodynamic Settings 
of the Formation of Gold–Sulfide–Telluride 
Quartz Vein Mineralization in the Middle Urals
V. N. Smirnov, V. V. Murzin, Yu. V. Erokhin, 
K. S. Ivanov, Corresponding Member of the RAS 
V. N. Puchkov, and A. V. Zakharov 
p. 21  

PETROLOGY

Internal CO2 Sources during Anatexis under 
High-Temperature Metamorphism: Experimental Data
O. G. Safonov, L. I. Khodorevskaya, S. A. Kosova, 
A. V. Spivak, and Academician L. Ya. Aranovich 
p. 22  

GEOGRAPHY

Regionalization of Forest Landscapes in Russia
to Optimize Regional Modeling of Greenhouse Gas Fluxes
T. I. Kharitonova, M. A. Krinitskiy, V. Yu. Rezvov, 
A. I. Maksakov, A. V. Olchev, and Corresponding 
Member of the RAS S. K. Gulev 
p. 23