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Геология России: Recent submissions
Now showing items 201-220 of 41010
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(2006)According to the conventional concept based on a great body of empirical data, volcanogenic or epithermal deposits do not grade into mesothermal or plutonogenic ones with depth. However, in the Maisk ore group of central ...
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(2006)New high-precision (ICP-MS, Sr, Nd, and Pb isotopic) data together with previously obtained data were used to examine compositional variations in kimberlites, including diamondiferous varieties, of the East European platform ...
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(2006)Hydrothermal solutions were examined in a circulation system that started to develop after the 1991 volcanic eruption in the axial EPR segment between 9°45′ N and 9°52′ N. Within the twelve years elapsed after the eruption, ...
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(2006)Geochronological data (~1800 dates) have been analyzed by the probabilistic statistical analysis of samplings of different subalkaline and alkaline rocks through the whole of geological time. The distribution of five groups ...
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GEOCHEMISTRY OF SODIC WATERS IN THE DATONG INTERMOUNTAIN BASIN, SHANXI PROVINCE, NORTHWESTERN CHINA (2006)The paper presents a critical analysis of current concepts of the origin of sodic waters. The example of the Datong Basin with widespread sodic waters is employed to demonstrate that these waters typically have salinities ...
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(2006)Mica schists of the Korva Tundra Group (~1.91 Ga) of the Tana Belt were buried at the middle crustal level and later exhumed simultaneously with granulites of the Lapland Complex (~1.91 Ga). The Kandalaksha Group (KG) is ...
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(2006)Average concentrations of Pb, Zn, Cu, and other metals, as well as S and As, were calculated for the Aue granitic cupola, the contact aureole of which hosts the large vein-type uranium deposit of Schlema-Alberoda and the ...
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(2006)Morphological, geological, geochronological and palynological analyses show that the landscape, climate and hydrological history of the Seim River basin includes: 1) a period of sandy Terrace 1 formation by shallow flows, ...
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(2006)The geomicrobiological study of travertine sediments from hot springs of nitrogen sodium–sulfate waters in the Baikal rift zone demonstrated the decisive role of cyanobacterial mats in their formation. At the same time, ...
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(2006)The oldest rocks found at Precambrian shields worldwide are so-called gray gneisses, which are high-grade metamorphic granitoids of predominantly tonalite composition. These rocks are often older than 3.6 Ga and mark the ...
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(2006)he transition zones between oceanic and continental lithospheres at Atlantic-type margins remain poorly studied. The data available indicate that these regions are distinguished by specific tectonic and igneous activity. ...
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(2006)Space objects (interstellar and interplanetary dust; surfaces of asteroids, meteorites, and the Moon; and others) are affected by various kinds of radiation, e.g., flows of accelerated protons, ions of helium and heavier ...
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(2006)Diatom complexes serve as indicators of the level and character of the anthropogenic load on water ecosystems. Silicon shells of diatoms preserved in bottom sediments provide insights into species composition of the diatom ...
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(2006)Issues of the origin of marginal seas and genesis of their igneous rocks remain controversial because of the insufficient amount of documentary information (small number of drilled holes, rare network of seismic profiles, ...
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(2006)Hydrocarbon shows were already known half a century ago on the eastern coast of Lake Baikal. Zamaraev and Samsonov studied crude oils in the Klyuchi–Tolstyi Cape area and concluded that Tertiary sediments have the highest ...
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(2006)Biogeochemical processes in estuaries determine to a significant extent the further life of chemical compounds, including metals transported by rivers. Therefore, the characteristics of the behavior of metals in waters ...
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(2006)The ring structure in the Northwestern Pacific was discovered by Sakhalin researchers during the sea expedition carried out by the Institute of Marine Geology and Geophysics (Yuzhno-Sakhalinsk) on cruise 38 of the R/V ...
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(2006)The carbonaceous substances confined to both igneous and terrigenous rocks are widespread in the Minusa intermontane trough of the Altai–Sayan region. The characteristics of bitumen from this region obtained with methods ...
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(2006)The genesis of some deposits of noble and rare metals, which are extremely scarce in crustal and mantle rocks, attracts permanent interest of specialists in the field of ore formation. A new systematics of absorption of ...
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(2006)In recent years, substantial progress has been achieved in systematization of internal relationships between different states of the implicit Au in sulfide minerals not only on the basis of up-to-date analytical methods ...
Now showing items 201-220 of 41010