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Browsing ELibrary by Title
Now showing items 3700-3719 of 21821
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(2001)It may be endemic to mechanistic modelling of complex environmental systems that there are many different model structures and many different parameter sets within a chosen model structure that may be behavioural or ...
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(2002)The dissolution and transformation of soddyite ([UO2]2SiO4 · 2H2O) have been examined in aqueous suspension at pH 6 and 0.01 M NaNO3. Soddyite is an important component of the paragenetic sequence of secondary minerals ...
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(1997)A suite of divalent metal (Ca, Cd, Ba) carbonates was synthetized over the temperature range 10-40°C by the classical method of slowly bubbling N2 through a bicarbonate solution. It was discovered that carbonates could be ...
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(1988)We have determined the Fe-Mg fractionation between coexisting garnet and orthopyroxene at 20–45 kb, 975–1400 C, and the effect of iron on alumina solubility in orthopyroxene at 25 kb, 1200 C, and 20 kb, 975 C in the FMAS ...
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(2000)Equilibrium volumes and expansivities of three liquids in the system anorthite (CaAl2Si2O8)-diopside (CaMgSi2O6) have been derived from dilatometric measurements of the equilibrium length of samples in the glass transition ...
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(1997)A close relationship between the second-order Doppler shift (SOD) of the Mossbauer resonant recoil-free frequency and the equilibrium stable isotope fractionation has been established. The reduced isotopic partition function ...
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(1997)A close relationship between the second-order Doppler shift (SOD) of the Mössbauer resonant recoil-free frequency and the equilibrium stable isotope fractionation has been established. The reduced isotopic partition function ...
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(1995)The equilibrium oxygen isotope fractionation between grossular/andradite garnet and calcite has been determined experimentally by direct exchange from 800-1200°C at ~23 kbar. A least-squares fit to the equilibrium fractionation ...
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(1996)The stable isotopic composition (C, O, H, and S) of a fluid in equilibrium with the common metapelite assemblage graphite + sulfide has been calculated using a modified Redlich-Kwong equation of state at 500°3.5 kbar, and ...
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EQUILIBRIUM OXYGEN, HYDROGEN AND CARBON ISOTOPE FRACTIONATION FACTORS APPLICABLE TO GEOLOGIC SYSTEMS (2001)As demonstrated by the chapters in this short course, stable isotope techniques are an important tool in almost every branch of the earth sciences. Central to many of these applications is a quantitative understanding of ...
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(1989)The value of analyzing the morphology of mineral crystals and of determining their equilibrium shapes as a point of reference for such an analysis is difficult to overestimate, since it offers the potential for real progress ...
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(1990)The identification of equilibrium mineral assemblages in rocks is an important problem which can be solved not only by applying the principles of physical chemistry but also by observing the morphological characteristics ...
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(2004)Isotopologues of molecular gases containing more than one rare isotope (multiply substituted isotopologues) can be analyzed with high precision (1σ <0.1‰), despite their low natural abundances (∼ ppm to ppt in air), and ...
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(2004)The spatial extent of the Last Glacial Maximum (LGM) glaciers (MIS 2) in the northwest of the Barguzinsky Ridge has previously been mapped. Geographical information system (GIS)-computing of the glaciers' quantitative ...
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EQUIVALENT CHANNEL NETWORK MODEL FOR PERMEABILITY AND ELECTRICAL CONDUCTIVITY OF FRACTURE NETWORKS (2002)It is remarkable that the permeability k and electrical conductivity sigma of saturated, fractured rock exhibit a power law relationship with exponent r as pressure is applied to the rock. To understand this behavior, the ...
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EROSION AND RIFT DYNAMICS: NEW THERMOMECHANICAL ASPECTS OF POST-RIFT EVOLUTION OF EXTENSIONAL BASINS (1997)In this study, we investigate thermo-mechanical consequences of erosion of rift shoulders. Conventional models imply post-rift cooling that results in subsidence and strengthening of the lithosphere. Existing models neglect ...
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(1999)The origin and development of erosion-modified, erosion-transformed, and erosion-induced depressions in volcanic terrains are reviewed and systematized. A proposed classification, addressing terminology issues, considers ...
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(2003)We revisit a number of important topics associated with the problem of interactions between surface and subsurface processes during syn- and post-rift evolution. To demonstrate the importance of these interactions and to ...
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(2003)Problems are formulated that can be solved by error analysis of the method of double-spike mass spectrometry of solid phases. General relations were derived for the calculation of the errors of the method for elements with ...
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(2000)This paper presents the results of a detailed study of pyroclastic deposits produced on Bezymyannyi Volcano on March 30, 1956: composition, stratigraphy, grain size, mechanical and thermal effects. It is shown that the ...
Now showing items 3700-3719 of 21821