14 Result(s)
within
Corresponding Member of the RAS A. V. Samsonov
Earth Sciences
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Article
Mesoarchean Silicic Volcanics in the Kursk Block of the Voronezh Crystalline Massif: Composition, Age, and Correlations with the Ukrainian Shield
Metarhyiolites are found along with metapelites and metabasites in sedimentary–volcanic sections of Archean greenstone belts of the Kursk block of the Eastern Sarmatia. The age of igneous protoliths of metarhy...
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Article
Garnet U–Pb Age of Skarns from Dashkesan Deposit (Lesser Caucasus)
The results of the U–Pb geochronological study of garnet from scarns of the Dashkesan deposit are reported. The first “direct” estimate of the age of the skarn formation and ore genesis for this deposit (147 ±...
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Article
Fragments of Paleoproterozoic Large Igneous Provinces in Northern Fennoscandia: Baddeleyite U–Pb Age Data for Mafic Dykes and Sills
New data on the age of dolerite dikes in the NE part of the Kola province of the Fennoscandinavian shield and the picrodolerite sills that cut the dikes are presented. The results of U–Pb ID-TIMS baddeleyite d...
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Article
Mafic Intrusions of ca. 2400 Ма Large Igneous Province in the Belomorian Mobile Belt: First Baddeleyite U–Pb ID-TIMS Data
U–Pb ID-TIMS dating of igneous baddeleyite from metamorphosed coronitic gabbronorites in the сentral part of the Belomorian mobile belt, Fennoscandian shield was performed for the first time. The obtained age ...
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Article
The Paleoprotherozoic Volcanics of the Tim Formation within the Kursk Block, Sarmatia: Age and Geodynamic Setting
The volcanic–terrigenous Tim Formation in the Kursk Block of Sarmatia occurs in the Paleoproterozoic synforms. The Tim Formation volcanics are represented by metamorphosed ferropicrites, ferropicritic basalts,...
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Article
Archean Carbonatites and Alkaline Rocks of the Kursk Block, Sarmatia: Age and Geodynamic Setting
Neoarchean intraplate granitoid (2.61 Ga) and carbonatite magmatism are established in the Kursk block of Sarmatia in close spatial association. Alkaline pyroxenites, carbonatites, and syenites of the Dubravin...
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Article
Arkose Sandstones of the Kebekta Group of the Ugui Graben (Aldan Shield): Age, Provenance, and Deposition Setting
The results of U–Pb (ID-TIMS) and U–Th–Pb (LA-ICP-MS) geochronological studies of baddeleyite from dolerite dikes of the Sulumat Complex and detrital zircon from red arkose sandstones of the Kebekta Group of t...
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Article
Open AccessMetamorphism of the Uni Suite as an Indicator of Early Precambrian Collisional Processes in the Vyatka Belt, Northeast of Volgo–Uralia
According to the core data from two deep holes, the following mineral assemblages were identified in metapelitic rocks of the Uni Suite in the central part of the Vyatka Belt, sandwiched between Archean blocks...
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Article
Trace and Rare Earth Elements and Hf Isotopic Composition in Zircons from the Paleoproterozoic Diorite–Granodiorite Plutons of the Kursk Block of Sarmatia as Indicators of Petrogenesis
Lu–Hf isotopic composition of zircons from the calc-alkaline diorite–granodiorite intrusions of the Stoilo-Nikolaevskii complex in the margin area of the Kursk block is an important indicator of petrogenesis a...
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Article
Paleoproterozoic Gabbros of the Kursk Block, Sarmatia: Age, Sources of Melts, and Tectonic Position
The Paleoproterozoic Tim-Yastrebovka synform of Eastern Sarmatia contains gabbroid intrusions. The largest of them is the Gnilushinskii massif of hornblende gabbros, which are calc-alkaline rocks, enriched in ...
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Article
Open AccessErratum to: Metamorphism of the Uni Suite as an Indicator of Early Precambrian Collisional Processes in the Vyatka Belt, Northeast of Volgo–Uralia
An Erratum to this paper has been published: https://doi.org/10.1134/S1028334X23070073
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Article
Age Limits for the Zaonega Formation of the Ludicovian Superhorizon and the Shunga Event in the Onega Basin: New U–Pb Zircon Data for the Konchezero Sill
New U–Pb data for zircon from the Konchezero sill reliably determine the age of the Suisari Formation of the Ludicovian and the limit of the maximum age of the volcanogenic–sedimentary Zaonega Formation with i...
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Article
Rifting in the Paleoproterozoic Onega Basin: Geochemistry of Volcano–Sedimentary Rocks of the Zaonega Formation
The study of the volcano–sedimentary sequence in the lower part of the Zaonega formation in the Paleoproterozoic Onega structure (Karelian craton, Fennoscandian Shield) has shown that tuffaceous and high-silic...
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Article
First Discovery of Paleoproterozoic Aillikite Dikes in Sarmatia: Geochemistry and Petrogenesis
Aillikite dikes of carbonate–biotite composition, intersecting Paleoproterozoic banded iron formations, were discovered in the Kursk block of Sarmatia for the first time. Their age is 2.10–2.07 Ga. The ailliki...
