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Browsing Геология России by Title
Now showing items 4065-4084 of 39126
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(2004)Bacteria and dissolved humic substances are capable of binding significant concentrations of metals in natural environments. Recent advances in understanding bacteria-metal and humic-metal complexation have provided a ...
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(1988)In this paper we discuss a continental crust section for S waves, based on data not previously used for the purpose. These are observations of waves converted from P into S waves in the lower continental crust (Ps converted ...
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(1990)Comparison of maps of the distribution of stratiform polymetallic ore deposits with hydrochemical and salt maps shows the almost universal confinement of such deposits both directly to salt-generating basins and to their ...
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(1999)New data on the chemical composition of bulk samples, and of metallic and nonmagnetic fractions of six CR chondrites (Renazzo, Y793495, PCA91082, EET92042, Acfer 209 and El Djouf 001) are reported. It is shown that volatile ...
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(1989)Our study of pyrope garnets in Quaternary terrace deposits showed that the distribution of silica concentrations in them could be described by a regular second-degree trend surface when it was plotted in MgO-Al2O3 and ...
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(1989)We studied diamond crystals from kimberlites, including colorless octahedra, rhombododecahedra, less often cubes, and forms transitional between them, and from metamorphic rocks, including yellow and yellow-green cubes, ...
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(PANGAEA, 2010-08-18)
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DISTRIBUTION OF TRACE ELEMENTS AMONG THE ROCK-FORMING AND ACCESSORY MINERALS OF URALIAN GRANITOIDS (2004)The distribution of trace elements among rock-forming and accessory minerals was studied in the granodiorites of the central (Chusovskoi, Shabrovskii, Verkhisetskii, and Shartashskii plutons) and southern (Smolinskii and ...
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(1998)The experimental distribution coefficients, K'd, for trace elements in carbonate minerals show a systematic pattern of behavior that differs from that expected if the distribution were controlled by equilibrium thermodynamics. ...
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(1998)The experimental distribution coefficients, K'd, for trace elements in carbonate minerals show a systematic pattern of behavior that differs from that expected if the distribution were controlled by equilibrium thermodynamics. ...
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DISTRIBUTION OF TRACE ELEMENTS BETWEEN CLAYS AND ZEOLITES AND AQUEOUS SOLUTIONS SIMILAR TO SEA WATER (1992)The mechanisms of solid-solution partitioning during mineral crystallization in sea water have been investigated for Rb, Cs, Co, Sr, U, Th and lanthanides as trace elements, and Fe, Mg-chlorite/smectites and Na-zeolites ...
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(2003)The distribution of trace elements (Li, Rb, Cu, Zn, Pb, Sn, Ag, Au, and Hg) was studied in trap sills of two intrusive phases in the southern Siberian Platform. Cluster and factor analyses of the composition of 86 trap ...
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(Общество с ограниченной ответственностью Обракадемнаука, 2019)In Kamchatka volcanism has occurred since the Cretaceous period. There are about 7100 volcanic structures with age from 2-2.5 million years to the present. There are 20 active and 14 potentially active polygenetic volcanoes, ...
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(1989)The recent study of submarine volcanoes of the Kurile island arc on cruises of the R/V Vulkanolog revealed the distribution in space of all Holocene volcanoes here and, therefore, allowed them to be analyzed in connection ...
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(1996)W and Mo abundances in the bulk metals of 10 H, 5 L and 6 LL chondrites were determined by instrumental neutron activation analysis (INAA). Partitioning of W and Mo between metal and non-metal phases was evaluated by ...
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(PANGAEA, 2000-06-06)Samples of zooplankton were collected in the Barents Sea during cruise 11 of R/V Akademik Sergey Vavilov in September-October 1997. Three different sampling methods were used: 30 l bottle, Judey net, and BR net. More than ...
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DISTRIBUTION PATTERNS OF DIFFERENT FORMS OF PHOSPHORUS IN SOME SURFICIAL SEDIMENTS OF THE BALTIC SEA (1991)The lateral distribution patterns of different forms of phosphorus (P) in some Baltic Sea sediments were investigated by a sequential extraction procedure. The distribution and amount are mainly related to redox state, ...
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(2002)This paper describes coal petrographic characteristics, sulfur abundance, distribution and isotopic signature in coals in the Wuda coalfield, Inner Mongolia, northern China. Petrographic studies suggest that depositional ...
Now showing items 4065-4084 of 39126