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Browsing ELibrary by Title
Now showing items 6905-6924 of 21638
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(1990)The block model enables us to identify several characteristic features of the deformation of the crustal medium that are typical of multicomponent mechanical systems. A nontrivial property of block structure is its ability ...
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(2002)Although complex rheological models have been used to study the evolution of orogenic wedges, many features of simple models remain to be fully explained. Here, we analyze the plane strain evolution of model orogenic wedges ...
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(1988)Studying the mechanism governing the humidification of the land surface and predicting anomalous humidification (droughts or excess humidification) are among the highest-priority problems of present-day hydrometeorology. ...
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(2001)X-ray absorption fine structure spectroscopy and density functional calculations were used to determine the structural model of arsenic surface complex on gibbsite mineral. The structural environment of arsenic at the solid ...
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(2003)The joint solubility of Cl and H2O was experimentally studied at P = 1 kbar and T = 1000°C in a model granodiorite melt interacting with water-salt fluid within a wide range of bulk fluid concentration, from 0 to 98 wt % ...
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(1989)The mantle convection and its convective structure are of interest in connection with the search for the mechanism that sets tectonic plates in motion. The lack of even such basic data as the sources of energy and the ...
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(1989)Laboratory experiments provide a method of studying the dynamics of mechanical phenomena in meteorite impacts, as well as their residual effects. We made a study of this in experiments with explosives, simulating a ...
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(1985)Formation of deep basins in continental crust is usually explained by stretching. Intense stretching produces typical deformations in sedimentary cover. These deformations are observed in rift valleys. Deformations produced ...
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(1986)The development history of the Alpine-Carpathian segment of the Alpine belt is considered. Since the Triassic numerous deep basins on continental crust have been formed there by rapid subsidence without significant stretching ...
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(1990)Many genetic models, including those dealing with the relationship between ore content and siliceous magmas, rely heavily on the idea that the crystallization of granitic intrusives leaves (at depth) chambers of residual ...
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(1999)Studies on the dissolution kinetics of kaolinite were performed using batch reactors at 25°C and in the pH range from 1 to 13. A rapid initial dissolution step was first observed, followed by a linear kinetic stage reached ...
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(1998)Surface speciation of Georgia kaolinite was investigated by detailed potentiometric titrations (pH 2-12) at various ionic strengths in KClO4 solutions (0.1, 0.01, 0.001 M) under N2 atmosphere, corrected for Si and Al ...
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MECHANISM OF MOLYBDENUM REMOVAL FROM THE SEA AND ITS CONCENTRATION IN BLACK SHALES: EXAFS EVIDENCE (1996)Molybdenum K-edge EXAFS (extended X-ray absorption fine structure) spectra yield new structural information about the chemical environment of Mo in high-Mo black shales and sediments. Two spectral types are found. The less ...
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(1988)The eruptions typical of andesite volcanoes are explosive. The driving force for such explosions is gas at high temperature and pressure, which forms a separate phase that accumulates near the top of the volcanic vent (the ...
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(1988)To elucidate the changes in the molecular weight distribution of DOM as the salt background increases, the authors performed laboratory experiments in which we used ash-free humic acid (HA) and fulvic acid (FA) preparations ...
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(1989)From numerous geological data it is known that gold tends to concentrate in quartz veins, as well as chalcedony or fine-grained quartz. This convinced the authors to conduct an experimental study to ascertain the mechanism ...
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(2004)The proposed mechanism of oil-gas pool formation is based on three processes: (1) the essential role of the climatic water cycle in carbon transfer to subsurface reservoirs; (2) the reduction of oxidized carbon forms in ...
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(2003)This study is aimed at quantifying surface reaction controlled basaltic glass dissolution rates at far-from-equilibrium conditions. Towards this aim, steady-state basaltic glass dissolution rates were measured as a function ...
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(2003)Pressures characterizing the formation conditions of near-solidus magmas in plume environments (picrites and meymechites of the Siberian trap province) were estimated on the basis of their TiO2/Na2O ratios and projections ...
Now showing items 6905-6924 of 21638