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Article
Age and Origin of the Subalkaline Magmatic Series of the Khibiny–Lovozero Complex
The paper presents data on the miaskite syenites of the Lovozero massif, pulaskites of the Khibiny massif, rocks of the larvikite–lardalite series of the Kurga massif, and subalkaline volcanics, which are pres...
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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
The Great Dyke of the Kola Peninsula as a Marker of an Archean Cratonization in the Northern Fennoscandian Shield
The results of geochronological and petrological studies of the largest mafic dyke in the northern part of the Fennoscandian Shield, called the Great Dyke of the Kola Peninsula (GDK), are presented. According ...
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Article
Investigation of the Crystallinity and Water Permeability of Surface Layers of UAM-50 and UAM-100 Ultrafiltration Membranes
We perform X-ray diffractometry, electron-microscopic, and kinetic studies of the surface layers of UAM-50 and UAM-100 ultrafiltration membranes. The crystallinity of the membranes is studied by X-Ray diffract...
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Article
Mass Transfer Coefficients in Electrochemical Membrane Process of Iron, Magnesium and Manganese Ions Extraction from Technological Solutions Complicated by Concentration Polarization
The article presents the results of a study of mass transfer in the process of electrochemical extraction of iron, magnesium and manganese ions from technological solutions. Mathematical expressions are obtain...
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Article
Paleoproterozoic (2.51–2.40 Ga) Igneous Provinces of the Northeastern Fennoscandia: Geochemistry of Volcanic Rocks and Correlation with Intrusive Complexes
The results of geochemical studies of Paleoproterozoic volcanic rocks in the structure of the Polmak–Pechenga–Imandra–Varzuga belt of the northeastern part of the Fennoscandian Shield are presented. Taking int...
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Article
Olivine and Clinopyroxene Phenocrysts as a Proxy for the Origin and Crustal Evolution of Primary Mantle Melts: a Case Study of 2.40 Ga Mafic Sills in the Kola–Norwegian Terrane, Northern Fennoscandia
New petrographic, geochemical, and isotopic (Sr, Nd, and δ18О) data on olivine and pyroxene phenocrysts provide constraints on the composition and crustal evolution of primary melts of Paleoproterozoic (2.40 Ga) ...
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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
1860-Ma I-Shaped Mafic Sills in the Murmansk Craton, Eastern Fennoscandia: Petrology and Tectonic Setting of Within-plate Mafic Events during Nuna Assembly
1860-Ma within-plate mafic rocks of the Eastern Murman Sill Province were studied in the northern part of the Murmansk Craton, where they compose sheet bodies (sills) up to 100 m thick in Archean granitoids an...
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Article
Calcic Garnets as a Source of Information on the Age of Ultramafic Alkaline Intrusions in the Kola Magmatic Province
The paper presents data of U–Pb (ID-TIMS) geochronologic studies of schorlomite–morimotoite–andradite garnet from the Vuoriyarvi, Sallanlatva, and Salmagorsky massifs in the Kola alkaline province. The garnet ...
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Article
Mafic Magmatism of Northeastern Fennoscandia (2.06–1.86 Ga): Geochemistry of Volcanic Rocks and Correlation with Dike Complexes
The comprehensive geochemical and isotopic-geochronological study of Early Proterozoic volcanic rocks in structure of the Polmak–Pechenga–Imandra–Varzuga belt and dikes and sills of the Murmansk and Kola–Norwe...
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Article
Method for Predicting and Calculating Friction Coefficients and Kinetic Characteristics for Electrodialysis Separation of Industrial Solutions Containing Nickel Ions
A method for predicting and calculating friction coefficients and kinetic characteristics for electrodialysis separation of industrial solutions containing nickel ions was developed. Approximations for predict...
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Article
2.4 Ga Mafic Dikes and Sills of Northern Fennoscandia: Petrology and Crustal Evolution
New petrographic, geochemical, and Sm-Nd isotopic data provide constraints on the petrogenesis of ca. 2400 Ma gabbronorite, picrodolerite and dolerite mafic sills and dikes in the Liinakhamari and Sorvaranger ...
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Article
Paleomagnetism of Precambrian dikes in the Kola part of northeastern Fennoscandia and its relation to the Svecofennian orogeny
Based on the results of the preliminary paleomagnetic investigation of 57 Precambrian dikes of the Kola Peninsula, in 31 of them a stable monopolar component of natural remanent magnetization (NRM) is revealed...
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Article
Paleozoic tholeiitic magmatism of the Kola province: Spatial distribution, age, and relation to alkaline magmatism
This paper focuses on the occurrences of tholeiitic magmatism in the northeastern Fennoscandian shield. It was found that numerous dolerite dikes of the Pechenga, Barents Sea, and Eastern Kola swarms were form...
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Article
Petrogenesis of metasomatic rocks in the fenitized zones of the Ozernaya Varaka alkaline ultrabasic complex, Kola Peninsula
This paper reports the results of an investigation of metasomatic alterations in basement gneisses within the contact aureole of the Ozernaya Varaka alkaline ultrabasic massif. Based on mineralogical and geoch...
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Article
U-Pb geochronology and Sr-Nd isotopic systematics of minerals from the ultrabasic-alkaline massifs of the Kola province
This paper reports the results of U-Pb geochronological and Sr-Nd isotopic geochemical investigations (LA-ICP-MS) for perovskite, apatite, titanite, and calcite from the ultrabasic-alkaline rocks of the Paleoz...
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Article
Model of formation of the Khibiny-Lovozero ore-bearing volcanic-plutonic complex
The paper presents the results of a study of the large Paleozoic ore-magmatic system in the northeastern Fennoscandian Shield comprising the Khibiny and Lovozero plutons, the Kurga intrusion, volcanic rocks, a...
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Article
Paleomagnetism, geochronology, and magnetic mineralogy of Devonian dikes from the Kola alkaline province (NE Fennoscandian Shield)
The new paleomagnetic data on forty dikes and two intrusive plutons of Devonian age located in different parts of the Kola Peninsula, which have not been previously covered by systematic paleomagnetic studies,...
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Article
Geochemical indicators of the evolution of the ultrabasic-alkaline series of Paleozoic massifs of the Fennoscandian shield
Rare-earth element distribution in the rocks and minerals of the olivinite-clinopyroxenitemelilitolite-melteigite-ijolite-nepheline syenite series was analyzed to study the evolution trends of the alkaline-ult...
