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1.
Glukhov A. N. Kotov A. B. Priymenko V. V. Sal’nikova E. B. Ivanova A. A. Plotkina Yu. V. Fedoseenko A. M. 《Geotectonics》2022,56(2):178-190
Geotectonics - In our study we analyzed the composition of granitoid rocks within the Kongo magmatic zone of the Omolon median mass. The studied calc-alkaline granitoids cut through the Early... 相似文献
2.
The results of computing the evolution of a disk subsystem of a spiral galaxy taking into account radial gradients of chemical elements (D,4He,12C,13C,14N,16O,7Li, Fe) are presented. It is shown that flow of intergalactic matter accreting on to the galaxy results in smoothing the radial gradients of gas and chemical elements, especially at the latest stage of the evolution. The final gradients depend weakly on the age of the galaxy and value of the Hubble constanth. The best agreement between calculated and observed abundance of4He is revealed if the primordial yield isY
0=0.25. The small decrease of the primordial deuterium abundance confirms the conclusion that the baryon density parameter is small:
b
h
50
2
1. Therefore, the nature of dark matter should be non-baryonic. 相似文献
3.
A. N. Glukhov 《Russian Journal of Pacific Geology》2014,8(3):177-186
The study of the distribution of the ore-forming elements in the Upper Proterozoic lithotectonic complexes of the Kolyma Terrane revealed their chalcophile affinity. Based on the sialic type of geochemical specialization, the mature composition of the continental crust of the region in the Late Proterozoic was suggested. It was shown that the epigenetic mineralization inherited the geochemical specialization of the host Late Proterozoic complexes, which indicates the active tectonomagmatic evolution of the Kolyma Terrane in the Phanerozoic. 相似文献
4.
Y. O. Chetverikov V. F. Ezhov M. S. Glukhov E. M. Ivankova A. S. Loshachenko V. D. Kalganov O. V. Yakubovich 《Meteoritics & planetary science》2023,58(6):815-833
Dust particles obtained by filtering fresh snow collected from May to September 2017 in the vicinity of Vostok station in Antarctica were examined using a scanning electron microscope. The collection of dust particles contains 197 spherules ranging from 0.5 to 117 μm in diameter, the most abundant ones (n = 188) by far being iron oxide spherules. Analyses of meteorological and human activity data suggest an extraterrestrial origin of most of the spherical particles. The particle size distribution histogram showed a smooth increase in their number with decreasing size and a dramatic drop at sizes smaller than 3 μm. The number of spherical particles has an uneven distribution over time, with an intense peak in July 27–28, 2017 which correlates by dates with the peak of the Southern Delta Aquariids meteor shower. The size distribution of the particles collected during the same period indicates the presence of a mechanism that accelerates their fall to the Earth. We propose that they are effective centers of condensation of ice crystals in stratospheric clouds. Our data indicate that collection of micrometeorites with sizes of several microns from the fresh snow is possible, opening a new way for sampling micrometeorites, including separate meteor showers. 相似文献
5.
V. I. Silaev M. Yu. Sokerin V. D. Tikhomirova Yu. V. Glukhov V. P. Lyutoev 《Lithology and Mineral Resources》2000,35(4):319-330
We found and studied the phosphate and ferromanganese mineralization in the Holocene alluvium at upper reaches of the Severnaya
Dvina River. Possible sources and accumulation mechanisms of manganese during the aquagene-fluvial hydroxide formation are
first discussed.
The report at the XIII Geological Congress of the Komi Republic, January 26, 1999. 相似文献
6.
V. I. Sinyukov V. A. Glukhov O. V. Rybas A. N. Makhinov V. I. Kim N. V. Berdnikov 《Russian Journal of Pacific Geology》2008,2(6):545-552
The dynamics of river channel processes were analyzed in the region of complex floodplain-channel branching of the Amur River near Khabarovsk using remote sensing data of the Earth’s surface. Zones of steady accumulation and long-term erosion of the river channel are established within the Khabarovsk water junction over the period of 1964–2004. The main problems related to restoring the Amur River back to its initial channel were distinguished in the course of these works. A map of individual streams formed in the Amur River channel under the influence of large tributaries (the Sungari and Ussuri rivers) was developed. The importance of this map for forecasting the spreading of anthropogenic pollution in the channel of the Amur River is shown using the example of the emergency situation that resulted from the explosion at the chemical plant in the Sungari River basin (Jilin, China; November 2005). 相似文献
7.
Doklady Earth Sciences - In the poorly studied southeastern part of the Chetlas uplift, ring structures typical for magmatic pipe-type bodies (diatremes) have been established. The main part of the... 相似文献
8.
Kocheva L. S. Karmanov A. P. Lutoev V. P. Shumilov I. Kh. Glukhov Yu. V. Pokryshkin S. A. 《Doklady Earth Sciences》2019,486(2):634-637
Doklady Earth Sciences - The results of studies of the chemical structure of organic matter in Devonian and Jurassic carbonized wood using IR, ESR, and GC–MS techniques along with elemental... 相似文献
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10.
R.Kh. Sungatullin G.M. Sungatullina M.I. Zakirov V.A. Tsel’movich M.S. Glukhov A.I. Bakhtin Yu.N. Osin V.V. Vorob’ev 《Russian Geology and Geophysics》2017,58(1):59-69
Magnetite microspheres from the Carboniferous deposits of the Usolka reference section were studied by probe microanalysis, with comparison of the distributions of chemical elements and microspheres. The presence of microspheres in sedimentary strata is considered to be an additional factor for stratigraphic correlation between sedimentary sections. The microspheres are shown to be of cosmic nature. The Late Paleozoic paleoclimatic changes (extreme cooling) and biotic crises were caused by the periodical Solar System motion in the Galaxy, cosmic-dust fallout, and meteorite bombardments of the Earth. 相似文献