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Browsing ELibrary by Title
Now showing items 1409-1428 of 21934
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(1988)The base of the Cordylodus proavus conodont Zone is the most appropriate horizon for the Cambrian–Ordovician Boundary. At Batyrbay the horizon reflects a significant global eustatic event that is marked by distinctive ...
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(2003)When designing hydraulic structures, civil engineers have to evaluate design floods, i.e. events generally much rarer that the ones that have already been systematically recorded. To extrapolate towards extreme value events, ...
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(2002)The purpose of this analytic-numerical Bayesian forecasting system (BFS) is to produce a short-term probabilistic river stage forecast based on a probabilistic quantitative precipitation forecast as an input and a deterministic ...
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(1999)We present a source model for the beginning of earthquakes based on the Griffith's fracture criterion. The initial state is a critical state of pre-existing circular fault, which is on the verge of instability. After the ...
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(1988)New information has recently been obtained from experimental research on gold and silver solubilities in magmatic melts and fluid systems. This paper considers whether gold and silver are lost from volcanic rocks, by means ...
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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 ...
Now showing items 1409-1428 of 21934