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Browsing Геология России by Title
Now showing items 8545-8564 of 39195
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(PANGAEA, 2018-04-20)
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(PANGAEA, 2006-07-27)Iron and manganese in bottom sediments studied along the sublatitudinal transect from Kandalaksha to Arkhangelsk are characterized by various contents and speciations depending on sedimentation environment, grain size of ...
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(PANGAEA, 2006-08-03)
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(1987)The persistent occurrence of diverse forms of manganese crichtonite in kimberlite breccias of the Mir, the Aykhal, the No. 3 and the Dal'nyaya pipes, Yakutia has been proven. The coexisting forms of this mineral detected ...
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(PANGAEA, 2000-02-01)
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(2004)According to Mayo (1932), who provided a brief historical review of the names used for piemontite, the first researcher who described this mineral has been Cronstedt in 1758 who named it “rod Magnesia.” In 1790 Chevalier ...
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(1988)Metallogenesis of manganese in space and time is reviewed here in the light of the progressive development of the atmosphere, the hydrosphere and the lithosphere attendant with the varied styles of tectonism. Economic ...
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(1995)The spores of a marine Bacillus bacterium, strain SG-1, are able to oxidize Mn(II) over a wide range of temperatures (0-80°C) and Mn(II) concentrations (<1 nm to>25 mM), in both low ionic strength N-(2-hydroxyethyl)piper ...
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(1993)Hydrothermal vents provide a major source of dissolved Mn(II) to the oceans, where concentrations range from 5 mM within the 350°C hot smokers to just above ambient seawater concentration in far field vent plumes. The ...
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MANGANESE(III) BINDING TO A PYOVERDINE SIDEROPHORE PRODUCED BY A MANGANESE(II)-OXIDIZING BACTERIUM (2004)The possible roles of siderophores (high affinity chelators of iron(III)) in the biogeochemistry of manganese remain unknown. Here we investigate the interaction of Mn(III) with a pyoverdine-type siderophore (PVDMnB1) ...
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(2004)We present results of a study of the 53Mn-53Cr isotope systematics in the enstatite chondrites and achondrites (aubrites). The goal of this study was to explore the capabilities of this isotope system to obtain chronological ...
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(2004)U-Pb- and Ar-Ar-geochronologic data are presented, obtained for Posolnenskii and Nizhnekanskii massifs located in the central and south-western parts of Angaro-Kanskii block and breaking through the metamorphic rocks of ...
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(1994)Glasses from two EPR and two MAR basalts were crushed sequentially to release argon in a stepwise fashion. The results show a variation in ratios within each sample, indicating that the argon trapped in the vesicles has ...
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(Tokyo Institute of Technology, 2014-02-28)Kamen volcano is an extinct volcanic complex located in the central part of the Klyuchevskaya group of volcanoes (KGV) between active Klyuchevskoy, Bezymianny, and Ploskie Sopky volcanoes. Kamen volcano was mapped by V.A. ...
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(2003)Mantle convection models require an initial condition some time in the past. Because this initial condition is unknown for Earth, we cannot infer the geological evolution of mantle flow from forward mantle convection ...
Now showing items 8545-8564 of 39195