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Browsing ELibrary by Title
Now showing items 8352-8371 of 21821
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(1997)Quantitative models for dynamics of the evolution of ore-magmatic systems have been developed quite irregularly. The most advanced approach is the mathematical modeling of heat and mass transfer processes for the case of ...
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(1996)Results are reported for cumulative thick-target yields of 126,128,130Xe upon irradiating metallic tellurium of natural isotopic composition with protons of ~3.7 MeV, 10 MeV, 14 MeV, and 17 MeV, respectively. Combined with ...
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(2005)α-Cellulose was isolated from four samples of Scots pine (Pinus sylvestris L.). Each sample was divided into two portions. One portion had the resins removed by solvent extraction prior to removal of lignins by treatment ...
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(1988)In this paper the results of studies of residual temperature in the profiles of bottom sediments are presented. They were conducted during 32nd and 38th expeditions on on 'Dal'nyye Zelentsy' in the Barents, Greenland, ...
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(1998)Considering the present state of the world mineral resources, it is shown that high-temperature geothermal fluids can be used to extract valuable minerals. For this purpose a technology was devised and experimental vortex ...
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(1988)Morphostructural nodes - specific mosaic structures, formed at the intersections of morphostructural lineaments, are extreme manifestations of recent block activity in mountain areas. The existence of a structurally and ...
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(2004)There is considerable controversy regarding the long-term strength of continents (Te). While some authors obtain both low and high Te estimates from the Bouguer coherence and suggest that both crust and mantle contribute ...
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(2000)The paper summarizes paleontological and stratigraphic data on the regional Konkian Stage in the Northern Black Sea, Crimea-Caucasus, and Transcaspian regions. Based on original and published materials, it is shown that ...
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(2002)An overview of seismic, thermal, and petrological evidence on the structure of Precambrian lithosphere suggests that its local maximum thickness is highly variable (140–350 km), with a bimodal distribution for Archean ...
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(1990)One of the leading causes of the variations in Caspian Sea level is neotectonic movements, whose pulsational character is determined by solar- (and lunar-) terrestrial relationships. Exogene factors also have their effect ...
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(2002)The resolution of the 3-D density structure in the Earth's deep interior has long eluded geoscientists. High-quality data from digital seismic instruments emplaced this decade have renewed interest in the measurement of ...
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(2003)Low-temperature demagnetization (LTD) promotes single-domain (SD)-like alternating field (AF) and thermal demagnetization properties of anhysteretic remanent magnetization (ARM) and thermoremanent magnetization (TRM), by ...
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(2004)Recent paleomagnetic data have shown that the history of the Earth's magnetic field includes a unique, fairly long (280 Ma to 230 Ma) interval during which the orientation of the Earth's magnetic dipole remained stable ...
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(2003)A new type of rhenium accumulation, which is related to carbonaceous metasomatic rocks that are common in some ore fields at the Primor'e is described. Such metasomatic rocks are confined to shear and boudinage zones and ...
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(2000)With increasing melt fraction (φ), the strength of partially molten granite decreases from a value characteristic of solid, competent rock to a value nearly equal to that of the melt. Previously published mechanical and ...
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(2003)In an attempt to obviate some of the difficulties inherent in using natural rocks to study experimentally the rheology of partially-molten granitic rocks, we report some preliminary experiments using hot-pressed synthetic ...
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(2003)Small deviations from higher symmetry can be established by single-crystal diffraction methods by (1) measuring the metric of the unit cell with high, non-routine precision; (2) measuring a full reflection sphere of ...
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(2002)An assumption of isothermal and static asthenosphere as the normal state of sublithospheric mantle, as commonly employed in studies of terrestrial magmatism, may be physically implausible for a system cooled from above. ...
Now showing items 8352-8371 of 21821