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Now showing items 6430-6449 of 39066
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(1998)Unusual cuboid graphite aggregates (up to 13 mm edge length) from the eclogitic gneiss unit of the Maksyutov Complex deflect a foliation defined by groundmass graphite and phengite, and pressure shadows have developed ...
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(2004)This document presents the International Committee for Coal and Organic Petrology (ICCP) classification of four organic components that cannot be included into any of the three maceral groups vitrinite, inertinite and ...
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(2005)Graphite in deep crustal enderbitic (orthopyroxene + garnet + plagioclase + quartz) granulites (740°C, 8.9 kb) of Nilgiri hills, southern India were investigated for their spectroscopic and isotopic characteristics. Four ...
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(1998)Melts produced under fluid-absent, graphite-saturated conditions have tightly constrained oxidation states and CO2 contents. A model is presented for the generation of mid-ocean ridge basalt (MORB) magma by fluid-absent ...
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(2004)The Kalguta deposit is a typical representative of the molybdenum-rare metal-tungsten ore association that is widespread in Gornyi Altai. The deposit is confined to the late Hercynian Kalguta Massif of leucocratic rare ...
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(2002)The graphitization of carbonaceous material (CM) in a high-pressure metamorphic gradient is characterized along a cross section in the Schistes Lustrs formation, Western Alps. Along this 25-km cross section, both the CM ...
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(2002)We study the Rayleigh–Taylor instability of a structure consisting of a buoyant layer of viscous fluid overlain by a dense perfectly plastic layer (which is represented by a strongly non-Newtonian fluid with the power-law ...
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(2002)Integral expressions are derived for the vertical component of gravitational attraction arising from vertical circular cylinders and horizontal circular disks with radial variation of density. The expressions contain a ...
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(2002)A general integral expression is formulated for the gravitational attraction due to any solid of revolution based on the attraction of vertical, semi-infinite, circular, cylindrical shells. The expression accommodates ...
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(2001)All geodynamic processes should be explained by the fundamental principle of the strive for gravitational equilibrium. [Ann. Soc. Geol. Belge Bull. 64 (1965) 95-123]The concept of gravitational collapse has fundamentally ...
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(1990)In the present paper we discuss the compaction of rocks in terms of a model of macroscopically uniform compacting deformation of porous rocks, i.e., unilateral compression produced by the weight of a rock body. The associated ...
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(2002)Models for the evolution of the Moon must explain a number of important characteristics of its magmatic history. Primary among them is the emplacement of mare basalts primarily on one side of the Moon, and in a region of ...
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(2003)Initial equations are obtained, similarity criteria are estimated and a project of simulation experiment is proposed for the gravitational differentiation of liquid cores of planets and natural satellites. It is assumed ...
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(1985)One of the current models of mantle convection assumes that the circulation takes place in two superimposed layers separated by the 700-km discontinuity. The present study reports two-dimensional numerical experiments ...
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(1990)There exist several gravity and mechanical models of the continental crust that are useful in the study of the interaction between two lithospheric plates. We shall consider a three-dimensional model of the mechanical ...
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(1990)Bouguer gravity anomalies over the Tien Shan and Pamir are large and negative, and therefore consistent with crustal thickening beneath both mountain ranges. Gravity anomalies over the western Tien Shan are within about ...
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(1988)Vertical zoning in massive pyritic copper-zinc sulfide occurrences in the Urals, as expressed in the replacement from the bottom up of pyrite (sulfur) ore by chalcopyrite-pyrite (copper), sphalerite-chalcopyrite-pyrite ...
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(2002)Meteoroids captured by the Earth into orbits with perigees larger than the Earth's radius can graze the atmosphere and travel a long distance, from one to several thousand kilometers, at low altitudes. The dynamics of large ...
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(2004)Great earthquakes, the few largest earthquakes that account for most of the Earth's seismic energy release, have occurred at only a few subduction zones around the world. Strong locking, or 'seismic coupling', of the ...
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(2003)Temporal irregularity of the output of volcanic material is studied for the sequence of large (V ≥ 0.5 km3, N = 29) explosive eruptions on Kamchatka during the last 10,000 years. Informally, volcanic productivity looks ...
Now showing items 6430-6449 of 39066