A5019092372- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geological Studies and Exploration
- High-pressure geophysics and materials
- Geotechnical and Geomechanical Engineering
- Clay minerals and soil interactions
- Crystal Structures and Properties
Novosibirsk State University
2024
V.S. Sobolev Institute of Geology and Mineralogy
2021-2024
Geological Institute
2024
Abstract In this study, we discuss mineral chemistry data, melt inclusion study results, and report Ar–Ar phlogopite age for the aillikite dikes of Arbarastakh alkaline-carbonatite complex on Aldan-Stanovoy shield, Russia. Aillikite was crystallized at 631 ± 8.5 Ma, coeval with intrusion rocks. The formed during late Neoproterozoic epoch rare earth element-Nb ore-bearing magmatic activity that widespread southwestern southern margins Siberian craton, related to rifting processes breakup...
Geochronological studies have been made on the main types of rocks from Burpala alkaline massif and two gabbro gabbro-diorite dikes located nearby. U-Pb LA-SF-ICP-MS zircon geochronology for yielded a date 294±2 Ma crystallization, 607±4 diorite 298±2 296±2 melanocratic nepheline syenite crustallization, 291±2 293±3 quartz quartz-containing granite crystallization. The stage formation (298–291 Ma) coincides with period Synnyr pluton some complexes Vitim segment Transbaikalia confirms...
The alkaline-ultrabasic carbonatite complex Arbarastakh is located in the southwestern part of Siberian craton. In addition to ultrabasic rocks such as pyroxenites and ijolites, various types dikes, phoscorites, aillikites are present massif. Based on their modal compositional characteristics, well chemical composition minerals, have been divided into three groups: "aillikite," "phoscorite", "alkaline-silicate carbonatite" groups. compositions olivines, phlogopites spinellides indicate that...
The Arbarastakh ultramafic carbonatite complex is located in the southwestern part of Siberian Craton and contains ore-bearing carbonatites phoscorites with Zr-Nb-REE mineralization. Based on modal composition, textural features, chemical compositions minerals, from can be subdivided into two groups: FOS 1 2. primary minerals olivine, magnetite isomorphic Ti impurities, phlogopite replaced by tetraferriphlogopite along rims, apatite poorly enriched REE. Baddeleyite predominates among...
Late Neoproterozoic Arbarastakh alkaline ultramafic carbonatite-phoscorite complex in the southern margin of Siberian craton (Aldan-Stanovoy shield), includes carbonatites and phoscorites closely associated with pyroxenites-ijolites lamprophyres. Major trace elements data, Sr, Nd Pb isotope compositions for rocks have been obtained to characterize sources involved their formation, primary melt composition build petrogenetic model. All rock varieties, excluding nepheline syenites, are...