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Article
Fenner Trend and the Role of Fractional Crystallization and Ferrobasaltic Magma Immiscibility in Granophyre Petrogenesis: the Case of the Mesoproterozoic Valaam Sill in the Ladoga Graben, Karelia
This paper presents the results of petrographical, mineralogical, geochemical, and isotope-geochemical studies of granophyres and host ferrogabbros, quartz ferromonzogabbros, quartz monzodiorites, and quartz m...
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Article
Sr- and Nd-Isotope Geochemical Effects of Assimilation and Fractional Crystallization (AFC) Processes in the Heterogeneous Crust: The Example of Ferrobasites from the Ladoga Graben (Karelia, Russia)
Petrographic, geochemical, and isotope–geochemical studies of the Mesoproterozoic volcanic association (lava flows and the Valaam sill) in the Ladoga graben in the suture zone of the Karelian craton and Svekof...
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Article
Early Famennian Trachyandesite Magmatism of the Pripyat Paleorift, East European Platform: U–Pb Age and Petrology
On the basis of the mineralogical-petrographic and geochemical study of igneous rocks of intermediate composition of the Pripyat complex of the Late Devonian Pripyat–Dnieper magmatism area, two subphases of th...
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Article
Open AccessErratum to: U–Pb (ID-TIMS) Age of Garnet from Aillikites of the Kola Alkali Province
An Erratum to this paper has been published: https://doi.org/10.1134/S1028334X23050112
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Article
Open AccessU–Pb (ID-TIMS) Age of Garnet from Aillikites of the Kola Alkali Province
The U–Pb (ID-TIMS) geochronological studies of garnet from aillikites of the Kandalaksha dike swarm (Kola alkali province) were carried out. The estimated U–Pb age of garnet (374 ± 3 Ma) coincides with the maj...
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Article
Metasomatized Xenoliths of Mantle Eclogites and Garnet Pyroxenites from the V. Grib Kimberlite, Arkhangelsk Province
We investigated mantle eclogite and garnet pyroxenite xenoliths from the V. Grib kimberlite located in the Arkhangelsk diamond province. The eclogites in the lithospheric mantle beneath the Arkhangelsk provinc...
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Article
Immiscibility between Fe- and Si-Rich Silicate Melts in Mesoproterozoic Ferrobasalt of the Ladoga Graben, Karelia, Russia
Evidence for liquid immiscibility between Fe-rich and Si-rich silicate melts in ferrobasalt of the Ladoga Graben in the Baltic Shield belonging to the Mesoproterozoic anorthosite–rapakivi granite (AMCG-type) a...
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Article
Sources and Age of the Gold Mineralization of the Irokinda Deposit, Northern Transbaikalia: Evidence from Pb, S, Sr, and Nd Isotope-Geochemical and 39Ar–40Ar Geochronological Data
Numerous orogenic gold deposits of different age, scale, and mineralization type are located within Northern Transbaikalia. Among them, there is a large group of Early Permian deposits, whose sources and relat...
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Article
Paleoproterozoic Kimberlites of Kimozero: Petrographic Facies Reconstruction of Kimberlite Pipe Overcoming Tectonic and Metamorphic Modification
Based on a detailed petrographic investigation and geological observations of the Paleoproterozoic Kimozero kimberlite (Karelia, Russia), we present a new model of kimberlite pipe with multiphase and mono-crat...
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Article
Ilmenite from the Arkhangelsk Diamond Province, Russia: Composition, Origin and Indicator of Diamondiferous Kimberlites
To provide new insights into the origin and evolution of kimberlitic magmas with different diamond concentrations from the Arkhangelsk diamond province in north-western Russia, we examined the major- and trace...
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Article
Relationship between Magmatic, Metamorphic, and Hydrothermal Processes within the Baikal–Muya Terrane (Eastern Siberia): Constraints from High-Precision Geochronological Study of the Kedrovskii Granitoid Massif
High-precision dating of granitoids is of key significance for age identification of the main stages of crust formation in various blocks of the continental crust. Here we demonstrate geochronological results ...
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Article
Genesis and Evolution of Mantle Melts of the Devonian Mafic-Ultramafic Rocks from the Eastern Azov Region (Dnieper-Donets Rift, Ukraine): Evidence from Clinopyroxene Geochemistry
The paper is dedicated to the study of the Devonian magmatic association of the Eastern Azov region, which is a part of the Pripyat-Dnieper-Donets rift zone. The association includes gabbros, peridotites, pyro...
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Article
Early Cambrian Syenite and Monzonite Magmatism in the Southeast of the East European Platform: Petrogenesis and Tectonic Setting
Abstract—The paper reports new geochronological, petrological, and isotope-geochemical data on the syenites and alkali syenites of the Artyushki massif, and the monzonites of the Gusikha massif. These massifs are...
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Article
Olivine in ultramafic lamprophyres: chemistry, crystallisation, and melt sources of Siberian Pre- and post-trap aillikites
We studied olivines from the Devonian pre-trap (the Ilbokich occurrence) and the Triassic post-trap (the Chadobets occurrence) carbonate-rich ultramafic lamprophyres (UMLs) in the southwestern portion of the S...
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Article
Devonian volcanics in the Voronezh Crystalline Massif, East European Platform: Evolution of the melts and characteristics of crustal contamination
The rift system of the Dnieper–Donets trough (DDT) is the largest magmatic area in the East European Platform. Basalts of the Voronezh Crystalline Massif (VCM) are spatially constrained to the eastern shoulder...
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Article
Geochemistry and oxygen isotopic composition of olivine in kimberlites from the Arkhangelsk province: Contribution of mantle metasomatism
The paper presents data on the composition of olivine macrocrysts from two Devonian kimberlite pipes in the Arkhangelsk diamond province: the Grib pipe (whose kimberlite belongs to type I) and Pionerskaya pipe...
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Article
Kimberlite age in the Arkhangelsk Province, Russia: Isotopic geochronologic Rb–Sr and 40Ar/39Ar and mineralogical data on phlogopite
The paper reports detailed data on phlogopite from kimberlite of three facies types in the Arkhangelsk Diamondiferous Province (ADP): (i) massive magmatic kimberlite (Ermakovskaya-7 Pipe), (ii) transitional ty...
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Article
Devonian ultramafic lamprophyre in the Irkineeva–Chadobets trough in the southwest of the Siberian Platform: Age, composition, and implications for diamond potential prediction
The results of geochronological, mineralogical, petrographical, and geochemical study of the Ilbokich ultramafic lamprophyre are reported. The specific features in the mineral and chemical compositions of the ...
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Article
Early Permian stage of formation of gold-ore deposits of northeastern Transbaikalia: Isotope-geochronological (Rb-Sr and 39Ar-40Ar) data for the Uryakh ore field
This work presents the first results of geochronological study of metasomatic rocks accompanying gold-bearing quartz veins of the Uryakh ore field (UOF). Based on the Rb-Sr and 39Ar-40Ar geochronological data, it...
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Article
Olivine from the Pionerskaya and V. Grib kimberlite pipes, Arkhangelsk diamond province, Russia: Types, composition, and origin
We report the first systematic study of different textural varieties of olivine (olivine from peridotite xenoliths, macrocryst-type Ol-I, and phenocryst-type zoned Ol-II) from two diamondiferous kimberlite pipes ...
