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Геология России: Recent submissions
Now showing items 261-280 of 41010
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(2006)Melt and fluid inclusions were investigated in minerals from igneous rocks and ore (Au-Ag-Pb-Zn) veins of the Stiavnica ore field in Central Slovakia. High H2O (7.1-12.0 wt %) and Cl (0.32-0.46 wt %) contents were found ...
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(2006)The statistical analysis of geochronological data (more than 14200 dates) has been carried out by using the method of the probabilistic description of summary information on the crust and mantle and separately on both of ...
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(2006)Ore mineralization is formed by postsedimentary (concentrated by evaporation to stage SW2) chloride brines metamorphosed in hydrogeochemical systems that are closed with respect to CO2, evolve according to "calcic" trend, ...
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(2006)A possible mechanism of the ascent of material within the Earth's crust and mantle is the mechanism of hydroextrusion, i.e., the effect of squeezing of material under excess pressure. The major factors that predetermine ...
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(2006)Partition coefficients (K) between forsterite crystal and melt are experimentally determined for many univalent, bivalent, trivalent, and tetravalent trace elements. Using numerical modeling, we calculated the energies of ...
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(2006)Three key Quaternary loess/paleosol sections were examined in the Missouri Valley (Iowa), Eustis Ash Pit (Nebraska), and in the Wittsburg Quarry (Arkansas) to gain insights into the sedimentation, environment and climate ...
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(2006)Geochemical and isotopic data were used for a comparative analysis of Late Mesozoic (150-120 Ma) granitoids in various geological structures of the upper Amur area. The granitoids are metaluminous high-potassic I-type rocks ...
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(2006)In the Russian Upper Amur Area and adjacent regions of southern Yakutia, Archean and Proterozoic metamorphic complexes intruded by Jurassic Stanovoi granitoids are most widespread. Cenozoic formations represented by low-depth ...
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(2006)The alkaline–carbonatite complex of the Paleozoic structure of the Urals is located in the Precambrian Sysert–Il’menogorsk block, which includes two structural levels and experienced a long-term evolution. The core of the ...
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(2006)Estimation of the growth time and dimension of plume head (PH) ascent from the deep mantle toward the lithosphere is an important problem of geodynamics, towards the solution of which an active search is presently being ...
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(2006)Lightning strikes to dry dielectric rocks result in local evaporation and melting of mineral matter and formation of fulgurites, which are peculiar geological formations consisting of glass, relicts of host rocks, and newly ...
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(2006)The North Atlantic region, which is located between the Charlie Gibbs Fracture Zone in the south and the Nansen Ridge in the north, has long been known as the Tule volcanic province coined after the ancient name of Iceland ...
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(2006)Geochronological dating of ophiolite rocks traditionally meets the following problems: (1) tectonic division of ophiolite complexes with subsequent juxta-position of rocks of different ages; (2) extremely low contents of ...
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(2006)Materials from different spheres of the Earth are ultimately delivered to bottom sediments, which serve as a natural recorder of the functioning of other spheres and originate as a result of the accumulation of their ...
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(2006)Charnockitic rocks (orthopyroxene-bearing granitoids) are important and characteristic rocks exposed in East Antarctica. The origin of these rocks and their tectonic setting has been a matter of hot debate since the ...
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(2006)The currently known diamondiferous kimberlite pipes are located northwest of the Vilyui syneclise. However, new factual data indicate that diamondiferous bodies can also be discovered southeast of the Vilyui syneclise axis. ...
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(2006)Traditional solutions of the problem of global geodynamics related to the theory of convective fluxes in the mantle are based on the modeling of the structure of viscoelastic flows of matter in the Earth’s interior on a ...
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(2006)The Serebryanka and Sylvitsa groups on the western slope of the Urals characterize the Vendian section of the eastern folded framework of the East European Platform [1]. They are conspicuous against the background of the ...
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(2006)Ferromanganese crusts on seamounts are among the major forms of solid fossil minerals in the ocean. They contain a significant amount of nonore inclusions, including calcium phosphates that often represent the crust-underlying ...
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(2006)The possibility of remote detection of the direction to the geomagnetic pole in past epochs is considered on the basis of using the Faraday effect in the process of radar sounding and recording of the magnetic component ...
Now showing items 261-280 of 41010