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Browsing ELibrary by Title
Now showing items 1415-1434 of 21934
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(1996)Due to the large partition coefficients of garnet for Lu compared to Sm, Nd, and Hf, garnet residual from crustal melting events has a large potential for retaining Lu and, over time, producing high reservoirs in the lower ...
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(2004)The concentrations of major and minor elements were determined in the surface water in different parts of the waste processing system (sludge pond, precipitation pits, and drainage streams) of the tailings dumps of a Pb-Zn ...
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(2005)Polycyclic aromatic hydrocarbons (PAHs) with a hydrous or an unhydrous mineral matrix were impacted and analyzed, to study the behavior of PAHs against shock. Results of the shock experiments suggested that volatiles ...
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(2001)Oceanic sediments (volcanoterrigenous mud and hemipelagic and eupelagic clay) were leached by IM NH2OH · HCl + 25% CH3COOH at different solid/liquid ratios (from 1/800 to 1/20) to study the REE behavior in the leachates. ...
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(1989)The behavior of scandium during lateritization of any given rock is based on how it is distributed among the main (rock-forming) and weathering-resistant accessory minerals of the rock. Scandium most likely is leached ...
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(2004)The behavior of isotopic systems (Sm-Nd, Rb-Sr, K-Ar, and U-Pb) in minerals from Archean plagiogneisses in the outer-contact zone of an alkaline-ultramafic intrusion points to an age discordance that resulted from the ...
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(1988)The article considers a 1- to 3-mm thick tongue that is emplaced in skarn-altered limestone, branches off an alkalic syenite dike and has a rapidly tapering lateral offshoot. We proved by f-radiography that the uranium ...
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(1988)We did an experimental study of partition of yttrium, a typical rare earth element, between a coexisting melt and fluid in the model system albite-sodium disilicate-water in the temperature range of 400 to 800°C at a ...
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(2004)Additional input of dissolved metals into estuaries and nearshore zones was experimentally estimated. During the experiments, samples of sedimentary material of rivers with different pollution grades were treated by seawater ...
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(2003)There is a genetic basis for many fundamental behaviors exhibited by animals (e.g., characteristic feeding patterns, defense instincts and social structures), which have the potential for leaving a trace fossil record. ...
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(1994)The residence time of highly incompatible lithophile elements in the upper mantle such as Th, U and Pb has previously been estimated at ⩽ 1 Ga. The concept of steady-state residence time is extended to include He and other ...
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(1998)In order to provide a more substantial foundation for interpreting the behaviour of B, Be, and Li during the production and early crystallization of primitive igneous rocks, we have measured olivine-, clinopyroxene-, ...
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(1987)The authors investigated the gold distribution in rocks formed by the first, earliest melt out flow of the Great Tolbachik fissure eruption (GTFE). That melt was equivalent in composition to basalt. The petrologic model ...
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(2004)Models explaining the characteristic depletion of High Field Strength Elements (HFSE) relative to elements of similar compatibility in subduction zone magmas invoke either (1) the presence of HFSE-rich minerals in the ...
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(2004)Knowledge of the ionospheric electron density distribution and its fluctuations is essential for predicting ionospheric characteristics for radio wave propagation and for other applications such as satellite tracking, ...
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(1990)The mineral described here was found in a drill core, where it occurred in veins of dolomite- and calcite-containing carbonate cutting pyroxenite of the alkalic-ultramafic Vuoriyarvi pluton on the Kola Peninsula. The ...
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(2004)The Early Paleoproterozoic (2.46-2.36Ga) Belomorian drusite (coronite) complex was addressed to for the first time in discussing the geology, petrology, and genetic conditions of dispersed intrusive mafite-ultramafite ...
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BELTS OF ARID AND HUMID SEDIMENTATION DURING THE CONIACIAN-MAASTRICHTIAN AGES OF THE LATE CRETACEOUS (1998)The existence of six climatic belts - northern circumpolar humid coal, northern mid-latitude coal-bauxite-kaolinite, northern arid tropical-subtropical evaporite, equatorial humid coal-bauxite-kaolinite, southern arid ...
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(1988)The authors used the gravitational admittance technique in an investigation of the isostasy of the Urals, in which they also employed an analysis of the coherence between topography and the gravity anomalies, plus a ...
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(2001)The South Caspian Sea (Fig. 1) was only recently opened for exploration to western companies. The number of offshore wells drilled in the past has been limited. The seismic response in the area is generally good, but the ...
Now showing items 1415-1434 of 21934