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Browsing Геология России by Title
Now showing items 3055-3074 of 39126
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(2001)Silicon carbide grains and graphite spherules containing TiC inclusions are found in the Murchison carbonaceous chondrite. The high 44Ca (from 44Ti) and 28Si contents of these grains are strong evidence that all three ...
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(2000)Full equilibrium calculations of the sequence of condensation of the elements from cosmic gases made by total vaporization of dust-enriched systems were performed in order to investigate the oxidation state of the resulting ...
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Condition of the surface zooplankton in the eastern part of the Black Sea during the autumn of 1996. (PANGAEA, 2000-06-03)On the basis of analyses of samples collected in the eastern Black Sea in September 1996 trends of increase in surface zooplankton biomass and general decrease in Mnemiopsis biomass were revealed.
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(2002)In many earth sciences applications, the geological objects or structures to be reproduced are curvilinear, e.g., sand channels in a clastic reservoir. Their modeling requires multiple-point statistics involving jointly ...
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(2002)This paper presents a conditional simulation procedure that overcomes the limits of gaussian models and enables one to simulate regionalized variables with highly asymmetrical histograms or with partial or total connectivity ...
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(2002)This paper presents a new approach to the LU decomposition method for the simulation of stationary and ergodic random fields. The approach overcomes the size limitations of LU and is suitable for any size simulation. The ...
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(2002)Assessment of uncertainty in the performance of fluvial reservoirs often requires the ability to generate realizations of channel sands that are conditional to well observations. For channels with low sinuosity this problem ...
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(2002)Earthquake focal depth distributions and effective elastic thickness variations on the continents suggest that in old cold regions such as shields, the lower continental crust can be stronger than the upper mantle, and ...
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(2003)The critical Rayleigh number for convective flow of pore water through a permeable spherical body is derived. The result affords constraints on carbonaceous chondrite planetesimal sizes and rates of heat production. If the ...
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(1987)The authors analysis indicates that the principal factor determining whether xenoliths are transported to the surface is the fluid content in the magma-filled fissure Mafic and ultramafic magmas undersaturated in volatiles ...
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(2001)Principal compositional features of Riphean gabbroids and associated titanomagnetite deposits on the western slope of the Urals are generally related to P-T conditions and the fluid regime of their formation. At low fluid ...
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(1989)To establish the origin of the Dubravinskoye carbonatites more accurately, we undertook to determine the isotopic characteristics of a number of widespread minerals, considering that the isotopic data on such rocks, now ...
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(1988)Detailed study of the upper Riphaean Min'yara formation of the southern Urals and the fossilized organic matter occurring in it enabled the author to show that the properties of these fossils correlate with several ...
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(1988)A rare-earth fluoride of sodium and calcium with the formula NaCaREF6 was discovered in 1958 in an albitized granite (apogranite) pluton and called gagarinite. It is a typomorphic mineral of rare-metal alkalic metasomatites, ...
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(1989)After the well-known work by V.I. Kovalenko and N.I. Kovalenko demonstrating the reality of crystallization of topaz from granitic melts rich in fluorine, the number of new finds of ongonite-like rocks increased steadily. ...
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(2003)The first generalization of materials on the oxidation zones of uranium deposits was done by L.N. Belova in her doctoral thesis in 1970. A unique and up to now the only classification of oxidation zones in hydrothermal ...
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(2004)Based on new data on melt inclusions in clinopyroxenes, we have established the physicochemical conditions (magma compositions, temperature, and pressure) of formation of boninites in ophiolites of the Dzhida zone (northern ...
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(2004)Coexisting melt (MI), fluid-melt (FMI) and fluid (FI) inclusions in quartz from the Oktaybrskaya pegmatite, central Transbaikalia, have been studied and the thermodynamic modeling of PVTX-properties of aqueous orthoboric-acid ...
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(1998)Slip rupture processes on velocity-weakening faults have been found in simulations to occur by two basic modes, the expanding crack and self-healing modes. In the expanding crack mode, as the rupture zone on a fault keeps ...
Now showing items 3055-3074 of 39126