A5049841759- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- Geological Studies and Exploration
- earthquake and tectonic studies
- Geotechnical and Geomechanical Engineering
- Geological and Geophysical Studies
- Mineralogy and Gemology Studies
- Paleontology and Stratigraphy of Fossils
- Metallurgy and Cultural Artifacts
- Geochemistry and Elemental Analysis
- Mining and Gasification Technologies
- Metal Extraction and Bioleaching
- Methane Hydrates and Related Phenomena
- Iron and Steelmaking Processes
- Atmospheric and Environmental Gas Dynamics
- Geological Modeling and Analysis
- Spacecraft and Cryogenic Technologies
- Geomagnetism and Paleomagnetism Studies
- Archaeological and Geological Studies
- Geological and Geophysical Studies Worldwide
- CO2 Sequestration and Geologic Interactions
- Geology and Paleoclimatology Research
- Crystal Structures and Properties
- Engineering and Environmental Studies
Institute of Geological Sciences
2023-2024
Institute of Volcanology and Seismology
2021-2024
Russian Academy of Sciences
2017-2024
National Academy of Sciences of Armenia
2023-2024
Institute of Geology of Ore Deposits Petrography Mineralogy and Geochemistry
2024
Institute of Experimental Mineralogy
2018-2023
Russian Academy of Natural Sciences
2018-2023
Institute of Mineralogy
2023
Natural History Museum
2023
Lomonosov Moscow State University
2015-2017
Sulfur contents in 98.5% of melt inclusions (MI) from calc-alkaline subduction basalts do not exceed 4000 ppm, whereas experimentally established limits sulfur solubility basaltic melts with high fO2 (characteristic zones, e.g., QFM + 2) surpass 14,000 ppm. Here we show that primitive (Mg# 62-64) may contain sulfur, approaching the experimental limit solubility. Up to 11,700 ppm S was measured olivine-hosted MI arc basalt 1941 eruption Tolbachik volcano, Kamchatka. These often magmatic...
В данной работе представлены первые данные систематического изучения вариаций состава и морфологии кристобалита в экструзивных породах вулкана Безымянный (Камчатка). Андезиты дациты всех семи исследованных куполов содержат кристобалит, содержание которого достигает 6 об. %, что позволяет рассматривать данный минерал качестве породообразующего. Кристобалит встречен 4 различных морфологических типах – 1) изометричных зернах с характерной трещиноватостью «рыбьей чешуи», окруженных порами; 2)...
Abstract Olivine is a major rock-forming mineral in various magmatic and metamorphic rocks the upper mantle. In this paper, we present first high-precision analyses of olivine from 15 samples magnesian skarns silicate marbles (MSSM) collection Fersman Mineralogical Museum (Moscow, Russia). Mg# [Mg/(Mg+Fe2+)·100, mol%] studied varies 86 to nearly 100. The main distinctive features are anomalously low contents Co (<51 mg/g), Cr (<5 Ni (<44 mg/g) high content B (23–856...
Platinum-group elements (PGE) and gold are a promising tool to assess the processes of mantle melting beneath subduction zones. However, fractionation in magmas inevitably overwrite initial metal budgets magmas, making constraints on inconclusive. Moreover, little is still known about geochemical behavior particular single arc magmatic system, from towards magma solidification. Here we compare noble metals lavas several eruptions Tolbachik volcano (Kamchatka arc) better understand effects...