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Browsing Геология России by Title
Now showing items 13961-13980 of 39124
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(2003)Supergene Fe sulpho-selenides (pyrite, dzharkenite and their intermediate compositions) were discovered in the oxidation zone of the Zapadno-Ozernoe copper-zinc massive sulphide deposit, South Urals, in association with ...
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(1994)Carbon is the fourth most abundant element in the solar system. In the Earth carbon is in atmospheric CO2, limestone, other organic products, graphite and trace diamond; interstellar diamond, however, is ubiquitous. Diamond ...
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(2001)Previous experimental work (Bezmen, 1992; Bezmen and Elevich, 1998) demonstrated that, at certain critical thermodynamic parameters (temperature, pressure, and fluid phase composition), melts become unstable and show cryptic ...
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(2001)The results of investigations of the superparamagnetic (SPM) effect, which takes place with the transient electromagnetic method (TEM) process, are discussed. Depending on the objective of the investigations, the SPM-effect ...
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(2003)Rock-magnetic studies of the Belovo key loess-paleosol section (52.4° N, 83.4° E) have shown that the loess accumulation and soil genesis on the Ob' Plateau were affected by a specific regional paleoclimate. During the ...
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(2003)A new type of rocks is defined belonging to the quartzite family and termed as superpure quartzite (hereafter, superquartzite) owing to its virtually monomineral composition, high chemical purity, and specific genesis. ...
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(2003)In this paper, we present a brief review of the thermodynamic equilibrium of binary solid solution-aqueous solution (SS-AS) systems and derive an expression that allows us to evaluate the supersaturation or undersaturation ...
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(2000)Abundant exsolved quartz rods occur in matrix clinopyroxene of eclogite from the Kokchetav massif, Kazakhstan. These rocks are diamond-grade, ultrahigh-pressure (UHP) metamorphic rocks that recrystallized at P > 6 GPa and ...
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(2002)Many volcanic eruptions are triggered by the injection of hot basic magma into a subsurface reservoir containing cooler and less dense silicic magma. As the basaltic magma cools and crystallises, it may become volatile ...
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(2003)the development of ideas on modern analogues for ophiolite complexes can be divided into three parts. In the first (1963 to 1972), ophiolites were mainly viewed as on-land analogues of the crust and upper mantle formed at ...
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(2003)Two section types are established in the Chupa nappe of the Early Precambrian Belomorian mobile belt (BMB) of the Baltic shield: one in the Lake Verkhnee Pulongskoe area of the stratotype region (Chupa Complex) and the ...
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(PANGAEA, 2017-08-29)The database contains glacier outlines from 1986-2000-2014. During the investigation Landsat (Landsat 5 TM, Landsat 7 ETM+, Landsat 8 OLI) and SPOT satellite imagery were analyzed to generate glacier outlines using manual ...
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(2001)The process of formation of colloidal and metacolloidal minerals, which can give rise to monodisperse systems, is considered in the context of supramolecular crystallization. We present data on synthesis of monodisperse ...
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(1999)The effect of temperature on the adsorption of H+ onto corundum was investigated experimentally by conducting potentiometric titrations at 25, 30, 40, 50, 60 and 70°C. These titrations were used to determine apparent acidity ...
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(2003)The surface of arsenopyrite was characterized after acidic, oxidative leaching in the presence of the bacterial species Thiobacillus ferrooxidans. Polished single-crystal grains of arsenopyrite were reacted for 1, 2, and ...
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(1999)Colloidal hematite (α-Fe2O3) is used as model solid to investigate the kinetic effect of specific adsorption interactions on the chemical reduction of uranyl (UVIO22+) by ferrous iron. Acid-base titrations and Fe(II) and ...
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(2001)The empirical rate laws formulated to describe the dissolution rates of oxide minerals include the surface charge concentration that results from the protonation and deprotonation of surface functional groups. Previous ...
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(2005)The surface charge density of colloidal SiO2 (Aerosil 380) was measured in alkali chloride (0.067 and 0.20 M LiCl, NaCl, and KCl) and alkaline earth chloride (0.067 M MgCl2, CaCl2, SrCl2, BaCl2) solutions. Measurements ...
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(1998)The isoelectric points, pHi.e.p., of ZnS, PbS, CuFeS2, FeS, FeS2, NiS2, CoS2, and MnS2 in NaCl supported electrolyte solutions are estimated to be between pH 3.3 and 0.6, with most of the isoelectric points below pH 2. The ...
Now showing items 13961-13980 of 39124