32 research outputs found
Petrological-geochemical features of ore-bearing effusive and intrusive rocks of the Nikolaevskoe gold-porphyry deposit (the Southern Urals)
Object. The article considers the results of geochemical studies of ore-bearing effusive and intrusive rocks of the Nikolaevka gold deposit, located in the zone of the Main Uralian fault in the Southern Urals. The deposit belongs to the gold-porphyry type which unconventional for the Urals and poorly studied here. Methods. The rock composition was determined by chemical analysis (IG UFRC RAS), mass-spectrometry with inductively coupled plasma on the ELAH 9000 quadrupole mass-spectrometer (IGG UB RAS) and X-ray fluorescence analysis on the VRA 30 spectrometer (IG UFRC RAS). Results. It is established that gold-porphyry mineralization associated with an island-arc volcanic-intrusive complex that unites plagiophyric and pyroxene-plagiophyric basalts, their tuffs, gabbro intrusions and ore-bearing series of dikes plagiophyric dolerite-porphyrites and gabbro-diorite-porphyrites. The rocks of the complex, including ore-bearing dikes, have normal alkalinity, tholeitic and transition from tholeitic to calc-alkaline composition. Among the volcanogenic formations, faunistically dated in the zone of the Main Ural fault in the Southern Urals, by a number of geochemical parameters (for example, the ratios of Zr/Nb and Nb/Th) the effusive and intrusive rocks of the deposit are the closest to the volcanics of the pyrite-bearing Baymak-Buribay Formation (D1e2), lying at the base of the section of the Magnitogorsk island arc, and, in all probability, are their age analog. At the same time, the gold-bearing complex differs from the Baymak-Buribay Formation by a general increased iron and titanium content, with a reduced magnesia of all rock types, as well as the absence of boninites and acid volcanics, the predominance of porphyry rock types, which can be due to the geodynamic conditions of its formation. Conclusion. Geodynamic analysis of geochemical data using diagrams (La/Sm)N-TiO2 and V-Ti/1000 suggests that the Nikolaevka deposit was formed in the articulation zone of the island arc and the back-arc basin. Gold-porphyry mineralization associated with the Late Emsian volcanic processes was isolated in the Southern Urals for the first time
ΠΠΎΠ»Π½ΠΎΠ²ΡΠ΅ ΠΏΡΠΎΡΠ΅ΡΡΡ Π² Π΄ΡΠ΅ΠΉΡΡΡΡΠ΅ΠΌ Π»ΡΠ΄Ρ CΠ΅Π²Π΅ΡΠ½ΠΎΠ³ΠΎ ΠΠ΅Π΄ΠΎΠ²ΠΈΡΠΎΠ³ΠΎ ΠΎΠΊΠ΅Π°Π½Π° Π² ΡΠΊΡΠΏΠ΅Π΄ΠΈΡΠΈΠΈ MOSAiC. ΠΠΈΠΌΠ½ΠΈΠΉ ΠΏΠ΅ΡΠΈΠΎΠ΄
One of the main directions of theoretical and applied research in the Arctic is the study of physical and mechanical processes in the atmosphere β ice β ocean system. For this purpose, theoretical and experimental problems are solved. The paper employs the method of monitoring the state of drifting ice by means of autonomous seismic stations in the MOSAiC international expedition in 2019β2020. The method of remote registration of ice information with a discreteness of 100 Hz made it possible to obtain data on the processes of compression and crushing of ice of various temporal and spatial scales. The paper presents early findings on the development of physico-mechanical processes in the ice cover under the influence of wind, oceanic gravitational waves, compression and crushing phenomena during large-scale deformations in drifting ice. The amplitude-frequency spectra of surface gravitational waves obtained in this work provide sufficient reason for attributing the phenomena described to swell waves and infra-gravity waves that occur in the stormy areas of the oceans. New data have been obtained on low-frequency horizontally polarized waves caused by the compression of ice and movements along breaks in the cohesive ice cover. The article considers the possibilities of using instrumental monitoring of the occurrence and development of tidal compression and crushing in the drifting ice of the Arctic Ocean. The results obtained can be used to develop methods for predicting the state of ice in real time both in engineering tasks and for improving weather and climate forecasting models.ΠΠ΄Π½ΠΎΠΉ ΠΈΠ· ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
Π½Π°ΡΡΠ½ΡΡ
ΠΈ ΠΏΡΠΈΠΊΠ»Π°Π΄Π½ΡΡ
ΠΏΡΠΎΠ±Π»Π΅ΠΌ Π² ΠΡΠΊΡΠΈΠΊΠ΅ ΡΠ²Π»ΡΡΡΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠΈΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π² ΡΠΈΡΡΠ΅ΠΌΠ΅ Π°ΡΠΌΠΎΡΡΠ΅ΡΠ° β Π»Π΅Π΄ β ΠΎΠΊΠ΅Π°Π½. Π‘ ΡΡΠΎΠΉ ΡΠ΅Π»ΡΡ ΡΠ΅ΡΠ°ΡΡΡΡ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠ΅ Π·Π°Π΄Π°ΡΠΈ. Π Π½Π°ΡΡΠΎΡΡΠ΅ΠΉ ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΡΡ ΠΌΠ΅ΡΠΎΠ΄ ΠΌΠΎΠ½ΠΈΡΠΎΡΠΈΠ½Π³Π° ΡΠΎΡΡΠΎΡΠ½ΠΈΡ Π΄ΡΠ΅ΠΉΡΡΡΡΠ΅Π³ΠΎ Π»ΡΠ΄Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π°Π²ΡΠΎΠ½ΠΎΠΌΠ½ΡΡ
ΡΠ΅ΠΉΡΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠ°Π½ΡΠΈΠΉ Π² ΠΌΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΠΎΠΉ ΡΠΊΡΠΏΠ΅Π΄ΠΈΡΠΈΠΈ MOSAiC Π² 2019β2020 Π³Π³. ΠΠ΅ΡΠΎΠ΄ Π΄ΠΈΡΡΠ°Π½ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠ΅Π³ΠΈΡΡΡΠ°ΡΠΈΠΈ Π»Π΅Π΄ΠΎΠ²ΠΎΠΉ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ Ρ Π΄ΠΈΡΠΊΡΠ΅ΡΠ½ΠΎΡΡΡΡ100 ΠΡ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ» ΠΏΠΎΠ»ΡΡΠΈΡΡ Π΄Π°Π½Π½ΡΠ΅ ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ°Ρ
ΡΠΆΠ°ΡΠΈΡ ΠΈ ΡΠΎΡΠΎΡΠ΅Π½ΠΈΡ Π»ΡΠ΄ΠΎΠ² ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΈ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΌΠ°ΡΡΡΠ°Π±Π°. Π ΡΠ°Π±ΠΎΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΠΏΠ΅ΡΠ²ΡΠ΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΠΈ ΡΠΈΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π² Π»Π΅Π΄ΡΠ½ΠΎΠΌ ΠΏΠΎΠΊΡΠΎΠ²Π΅ ΠΏΡΠΈ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Π²Π΅ΡΡΠ°, ΠΎΠΊΠ΅Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
Π³ΡΠ°Π²ΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Π²ΠΎΠ»Π½, ΡΠ²Π»Π΅Π½ΠΈΡΡ
ΡΠΆΠ°ΡΠΈΡ ΠΈ ΡΠΎΡΠΎΡΠ΅Π½ΠΈΡ ΠΏΡΠΈ ΠΊΡΡΠΏΠ½ΠΎΠΌΠ°ΡΡΡΠ°Π±Π½ΡΡ
Π΄Π΅ΡΠΎΡΠΌΠ°ΡΠΈΡΡ
Π² Π΄ΡΠ΅ΠΉΡΡΡΡΠ΅ΠΌ Π»ΡΠ΄Ρ. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π² ΡΠ°Π±ΠΎΡΠ΅ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄Π½ΠΎ-ΡΠ°ΡΡΠΎΡΠ½ΡΠ΅ ΡΠΏΠ΅ΠΊΡΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΡΡ
Π³ΡΠ°Π²ΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Π²ΠΎΠ»Π½ ΡΠ²Π»ΡΡΡΡΡ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΎΡΠ½ΠΎΡΠΈΡΡ ΠΎΠΏΠΈΡΠ°Π½Π½ΡΠ΅ ΡΠ²Π»Π΅Π½ΠΈΡ ΠΊ Π²ΠΎΠ»Π½Π°ΠΌ Π·ΡΠ±ΠΈ ΠΈ ΠΈΠ½ΡΡΠ°Π³ΡΠ°Π²ΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΡΠΌ Π²ΠΎΠ»Π½Π°ΠΌ, Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠΈΠΌ Π² ΡΡΠΎΡΠΌΠΎΠ²ΡΡ
ΡΠ°ΠΉΠΎΠ½Π°Ρ
ΠΎΠΊΠ΅Π°Π½ΠΎΠ². ΠΠΎΠ»ΡΡΠ΅Π½Ρ Π½ΠΎΠ²ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΠΎ Π½ΠΈΠ·ΠΊΠΎΡΠ°ΡΡΠΎΡΠ½ΡΡ
Π³ΠΎΡΠΈΠ·ΠΎΠ½ΡΠ°Π»ΡΠ½ΠΎ-ΠΏΠΎΠ»ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΡ
Π²ΠΎΠ»Π½Π°Ρ
, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΡ
ΡΠΆΠ°ΡΠΈΠ΅ΠΌ Π»ΡΠ΄ΠΎΠ² ΠΈ ΠΏΠΎΠ΄Π²ΠΈΠΆΠΊΠ°ΠΌΠΈ ΠΏΠΎ ΡΠ°Π·ΡΡΠ²Π°ΠΌ Π² ΡΠΏΠ»ΠΎΡΠ΅Π½Π½ΠΎΠΌ Π»Π΅Π΄ΡΠ½ΠΎΠΌ ΠΏΠΎΠΊΡΠΎΠ²Π΅. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΠ½ΠΈΡΠΎΡΠΈΠ½Π³Π° Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ ΠΈ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΏΡΠΈΠ»ΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΠΆΠ°ΡΠΈΡ ΠΈ ΡΠΎΡΠΎΡΠ΅Π½ΠΈΡ Π² Π΄ΡΠ΅ΠΉΡΡΡΡΠΈΡ
Π»ΡΠ΄Π°Ρ
Π‘Π΅Π²Π΅ΡΠ½ΠΎΠ³ΠΎ ΠΠ΅Π΄ΠΎΠ²ΠΈΡΠΎΠ³ΠΎ ΠΎΠΊΠ΅Π°Π½Π°. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π΄Π»Ρ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΏΡΠΎΠ³Π½ΠΎΠ·ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ Π»ΡΠ΄ΠΎΠ² Π² ΡΠ΅ΠΆΠΈΠΌΠ΅ ΡΠ΅Π°Π»ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΠΊΠ°ΠΊ Π² ΠΈΠ½ΠΆΠ΅Π½Π΅ΡΠ½ΡΡ
Π·Π°Π΄Π°ΡΠ°Ρ
, ΡΠ°ΠΊ ΠΈ Π΄Π»Ρ ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ ΠΏΡΠΎΠ³Π½ΠΎΠ·Π° ΠΏΠΎΠ³ΠΎΠ΄Ρ ΠΈ ΠΊΠ»ΠΈΠΌΠ°ΡΠ°
Current status of nuclear cardiology in the Russian Federation
The article is devoted to the analysis of the current status of nuclear cardiology in the Russian Federation. The data on the number of facilities performing radionuclide investigations for the diagnosis and monitoring of the treatment of cardiovascular diseases, their staffing and equipment are given. The statistics of the conducted nuclear cardiology tests for 2018-2020 are given, as well as their methods, features and diagnostic significance are described