Contents

Petrology

Vol. 34, No. 4, 2026

14th All-Russia Petrographic Conference, St. Petersburg, October 3, 2025

p. 381  abstract

PETROLOGY OF MAGMATIC AND METAMORPHIC COMPLEXES

First Evidence of High-Pressure Metamorphism in the Western Flank of the Belomorian Province, Late Paleoproterozoic Lapland–Kola Orogen

P. Ya. Azimov, A. M. Lezzhov, and A. V. Stepanova p. 382  abstract

Anomalous Source of the Dovyren Magmas: from Neoarchean Protolith to the Upper Riphean Crystallization History

A. A. Ariskin, Yu. A. Kostitsyn, E. O. Dubinina, S. G. Tessalina, and I. V. Pshenitsyn p. 384  abstract

Origins of Rapakivi Granites and Associating Gold Mineralization in Active Continental Margin Complexes of the Southwestern and Southeastern Margins of the Siberian Craton

A. E. Vernikovskaya, V. Yu. Fridovsky, N. Yu. Matushkin, E. A. Bogdanov, and Ya. A. Tarasov p. 387  abstract

Petrology, Geodynamics and Application of 3D Numerical Modeling for the Kara (Taimyr–Severnaya Zemlya) Orogen

V. A. Vernikovsky, A. E. Vernikovskaya, V. F. Proskurnin, N. Yu. Matushkin, O. P. Polyansky, and A. N. Semenov p. 390  abstract

Petrographic, Geochemical, and Isotopic Characteristics of Neoproterozoic Dolerites of the Sayan-Baikal Dike Belt in the Southern Part of the Siberian Craton

T. V. Donskaya, D. P. Gladkochub, E. I. Demonterova, and A. M. Mazukabzov p. 394  abstract

Geodynamic Evolution of the Sarma Segment (Akitkan Orogenic Belt, Siberian Craton) in the Archean–Proterozoic

U. S. Efremova, T. V. Donskaya, D. P. Gladkochub, A. M. Mazukabzov, A. V. Ivanov, and N. V. Bryansky p. 397  abstract

Slyudyanka Crystalline Complex: From Ordovician Granulite-Facies Metamorphism to Late Cenozoic Exhumation

A. V. Ivanov, E. A. Gladkochub, L. P. Kasatkina, L. Z. Reznitskii, E. I. Demonterova, N. V. Bryansky, A. A. Karimov, A. S. Maltsev, K. G. Erofeeva, A. S. Dubensky, and S. V. Malyshev p. 400  abstract

Structure and Metamorphic History of the Lower and Middle Crust of the Anabar Province of the Siberian Craton Based on Data for Xenoliths from the Nurbinskaya Diatreme

M. Yu. Koreshkova, H. Downes, E. Yu. Akimova, M. V. Stifeeva, I. Peytcheva, D. Dimitrova, L. Macheva, A. N. Larionov, S. A. Sergeev, G. A. Lisovski, and O. G. Safonov p. 403  abstract

Evidence of Grenville Tectonic Events in the Western Margin of the Siberian Craton: Granitoids of the Ryazanovsky Massif, Yenisei Ridge

A. D. Nozhkin, O. M. Turkina, I. I. Likhanov, and Yu. L. Ronkin p. 406  abstract

U–Pb Age of Zircons from Gneisses of the Mariinskaya Formation, Southern Urals, and Problems Related to the Precambrian in the Trans-Urals

T. A. Osipova, A. A. Krasnobaev, and S. V. Busharina p. 408  abstract

Study of Fluid-Bearing Magmatic Systems: A Case Study of Kamchatka

P. Yu. Plechov p. 410  abstract

Modeling Mantle Magma Transport within the Northern Margin of the Siberian Platform at the Permian–Triassic Boundary

O. P. Polyansky, A. N. Semenov, O. V. Koroleva, Yu. F. Filippov, and A. V. Prokopiev p. 412  abstract

Paleoproterozoic Andesite−Dacite−Rhyolite Volcanism in the Tim Backarc Basin of Sarmatia: Sources of the Melts, Crustal Evolution, and Geodynamic Scenarios

K. A. Savko, A. V. Samsonov, S. V. Tsybulyaev, and E. Kh. Korish p. 415  abstract

Magma Sources and Granitoid Formation Conditions in the Southern Part of the Main Batholith Belt (Kolyma)

A. A. Tsygankov and G. N. Burmakina p. 417  abstract

PETROLOGY OF ORE-BEARING MAGMATIC SYSTEMS

The Problem of Phoscorite Petrogenesis on the Example of Arbarastakh and Gornoye Ozero Massifs (Republic of Sakha, Yakutia)

M. N. Kruk, A. G. Doroshkevich, I. A. Izbrodin, I. R. Prokopyev, and E. A. Zubakova p. 420  abstract

Crustal Ore-Bearing Carbonatites-Kuldimites of the Byrranga Mountains, Taimyr Peninsula: A Model for Mantle-Crust Interaction

V. F. Proskurnin and V. A. Saltanov p. 422  abstract

Weathering Crust of Kimberlite Rocks: Petrological Types, Zoning, and Formation Processes

S. M. Sablukov and L. I. Sablukova p. 426  abstract

Sulfur Isotope Heterogeneity of Eclogites and the Scales of Fluid Mass-Transfer in the Root Zones of Subduction-Collision Orogens (North Muya Block, Northeastern Transbaikalia)

S. Yu. Skuzovatov, Yu. I. Tarasova, V. N. Reutsky, T. A. Velivetskaya, and V. S. Shatsky p. 429  abstract

Genetic Features in the Distribution and Concentrations of Ore Components in the Rocks of the Dunite–Clinopyroxenite–Gabbro Massifs: An Example of the Ural Platinum Belt

S. Yu. Stepanov, A. V. Kozlov, and R. S. Palamarchuk p. 432  abstract

Rare-Earth Elements in Rocks and Accessory Minerals of the Alkaline-Ultrabasic Series of the Kola Province

V. S. Stativko, A. A. Arzamastsev, and V. V. Bortnikov p. 435  abstract

Vesuvianite—a New U–Pb Mineral-Geochronometer for Determining the Age of Ore Formation: First Results and Prospects for Application

M. V. Stifeeva, T. L. Panikorovskii, E. B. Salnikova, and A. B. Kotov p. 439  abstract

Siliceous-Alkaline Metasomatites in the Precambrian Basement of the Torsko-Apsat Ore Cluster (Transbaikalia): Types, Position, and Role in Ore Genesis

V. I. Uyutov, S. S. Dvurechenskaya, and A. M. Moiseenko p. 442  abstract

Mineralogical and Petrographic Characteristics of Aillikites of the Yuzhnaya Pipe, Zima Alkaline-Carbonatite Complex, Eastern Sayan

V. V. Sharygin and A. G. Doroshkevich p. 444  abstract

PETROLOGICAL PROBLEMS DURING REGIONAL GEOLOGICAL STUDIES

Building Metamorphic Maps or Schemes with Regard to Results of Thermodynamic Modeling of Mineral Assemblages

Sh. K. Baltybayev, Ye. B. Borisova, and G. A. Petrov p. 450  abstract

The Sources of Cretaceous Magmatism in the Uda Sector of the Western Transbaikalian Rift Region Based on Geochemical and Isotopic (Sr, Nd, O, Pb) Data

A. A. Vorontsov, V. V. Yarmolyuk, S. I. Dril, V. M. Savatenkov, D. A. Lykhin, E. N. Federyagina, and S. A. Sasim p. 453  abstract

Main Stages of the Proterozoic Mafic Magmatism in the Southern Siberian Craton: Progress in the Study for the Period of 2010–2025

D. P. Gladkochub and T. V. Donskaya p. 456  abstract

Russia’s First Scientific Systematic Petrographic Collection: Foundation and Development

A. Ya. Dokuchaev, V. N. Smol’yaninova, and F. V. Kulakov p. 458  abstract

Alexander Postels’ Geognostic Collection and Its Scientific Significance

A. Ya. Dokuchaev, F. V. Kulakov, E. N. Matvienko, V. N. Smolyaninova, and E. L. Sokolova p. 461  abstract

Main Stages of Evolution of the Neoproterozoic Active Continental Margin of the Western Part of the Central Asian Fold Belt

A. A. Tretyakov, K. E. Degtyarev, N. A. Kanygina, A. N. Zhuravlev, and K. A. Tretyakova p. 465  abstract

Interaction of Mafic Magma and Carbon‑Bearing Sediments: Evidence from the Paleoproterozoic Onega Basin and Implications for Carbon Migration

S. Y. Chazhengina, V. V. Ustinova, and A. V. Stepanova p. 468  abstract

Felsic Melt Inclusions in Olivine of Ultramafic Rocks of the Uitkomst Complex (Bushveld Province) as Evidence for Crustal Anatexis

I. P. Solovova, M. A. Yudovskaya, A. A. Averin, and J. Kinnaird p. 486  abstract

Solubility of Pt and Pd in Two-Phase Water-Poor Fluid of the NaCl–CO2–CO–(H2O) Composition at Low fO2 and High fCl2 (T = 950°C, P = 200 MPa)

A. G. Simakin, V. N. Devyatova, O. Yu. Shaposhnikova, and O. A. Tyutyunnik p. 510  abstract