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Геология России: Recent submissions
Now showing items 221-240 of 41010
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(2006)The Man’khambo and Il’yaiz plutons are situated in the northern Urals at the main divide of the Urals (basins of Shchugor, Ilych, and Severnaya Sos’va rivers). These plutons cut the Upper Riphean–Vendian country rocks [1, ...
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(2006)According to petrological and geochemical data, Cenozoic alkali basalts of East Siberia and Central Mongolia are related to mantle plumes. Analysis of geophysical data made it possible to outline tails of these plumes [3, ...
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(2006)Mesozoic rocks of Sikhote Alin are well studied. However, they have been considered so far separately for the tectonically passive eastern margin of the Sino-Korean craton (hereafter, in the west) and for the active adjacent ...
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SR-ND ISOTOPIC HETEROGENEITY OF BASALTS OF THE SIERRA LEONE TEST SITE, MID-ATLANTIC RIDGE, 5°-7° S (2006)Mid-ocean ridge basalts (MORBs) provide important information on the composition and structure of the upper mantle. Isotope–geochemical data are essential for their studies, though their interpretation is still controversial. ...
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(2006)It was stated for the first time that clinopyroxene containing >1 wt % K2O may crystallize at 1300–1700°C and 5–11 GPa from carbonate liquid containing 14–33 wt % K2O. KCpx with as much as 5.75 wt % K2O was obtained in ...
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(2006)The purpose of our work is to refine the age of the Holocene polygonal ice wedge complex in Terrace 1 of the Chara River, plot an isotope diagram, which allows one to reconstruct winter temperatures of the period of ice-wedge ...
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(2006)In this communication, we present new data on the Sm–Nd age of clinopyroxene-bearing dunite, wehrlite, olivine clinopyroxenite, kosvite (including an apatite variety), and tylaite (including a pseudoleucite variety) that ...
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(2006)The Darasun deposit incorporates more than 200 sulfide–quartz ore veins formed in three stages: (1) the quartz–sulfide stage (quartz–tourmaline, quartz–pyrite, and pyrite–arsenopyrite assemblages with gold and ankerite); ...
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(2006)Numerous occurrences of present-day hydrothermal activity in the Mid-Atlantic Ridge (MAR) have been discovered to date. These discoveries and nonuniform distribution of high-temperature spring fields have raised the issue ...
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(2006)Attenuation field characteristics of shear waves in upper mantle in source zones of 34 large and great earthquakes worldwide were studied. Effective coda quality factor of Lg and Sn waves in two time intervals were determined. ...
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(2006)Island-arc environments in ancient basins, including forearc and backarc basins, are usually identified on the basis of the paleogeological position, structure, and composition of rock sequences, as well as the petrochemistry ...
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(2006)The Maisk gold–silver deposit is located in the Dal’negorsk ore district of the Primor’e region. In terms of geological setting, the deposit is confined to the southeastern part of the Dal’negorsk volcanotectonic dome in ...
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(2006)This paper presents the results of the studies performed from aboard the R/V Akademik Boris Petrov of the Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, in 2002-2004 aimed at ...
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(2006)By means of computer modeling, it was shown that the pre-uranium quartz and quartz-sulfide veins of the Schlema deposit with their typomorphic assemblages could be formed at the expense of cooling of hot pore solutions ...
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(2006)Natural γ-CrOOH was first found and studied in rischorrite of the Khibina Massif, in which this mineral is associated with gonardite, natrolite, phillipsite, and saponite and usually forms microcrystallites in a matrix of ...
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(2006)A thermodynamic model is proposed for the description of U and Pu behavior during their possible leaching from SNF in contact with underground waters. The model is based on the available information on the technology of ...
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(2006)The formational and metallogenic affiliation of the alkaline ultramafic rocks of the Arkhangel'sk diamondiferous province and the adjacent areas of the northern East European platform were analyzed using recent concepts ...
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(2006)Cavities in two texturally and genetically distinct clasts of the Kaidun meteorite were found out to contain crystals of distinct morphology, but of a similar composition. Cavities in chondrite breccia contain thin (<4 ) ...
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(2006)In the studying kimberlites, special attention was given to one aspect of the evolution of kimberlite magmas in mantle and crustal conditions: the entrapment of country rocks and interaction with them. Nodules in kimberlites ...
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(2006)Synthesis of porous silica via mechanochemical treatment of talc and subsequent acid leaching was investigated by X-ray diffraction (XRD), Fourier transformation infrared spectroscopy (FTIR), scanning electron microscopy ...
Now showing items 221-240 of 41010