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Browsing ELibrary by Title
Now showing items 6533-6552 of 21768
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(1989)The linear fold tectonics that determines the structural look of the continental crust expresses a P-T regime of the crust that assumes the presence of a thick 'load-bearing' mesozonal layer (with a temperature range of ...
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(2000)In a continuous binary solution, the partition coefficient, expressed as a ratio of mole fractions of one component in two phases, is linear against the composition of one of the phases (the numerator phase) if the exchange ...
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(2003)The rainfall-runoff process is widely perceived as being non-linear; however, the degree of non-linearity might not be significant in hydrologic time series. Evidence of non-linearity was reported in the past in the detrended ...
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(2004)It has been suggested that the release of clathrates rather than expansion of wetlands is the primary cause of the rapid increases observed in the ice-core atmospheric methane record during the Pleistocene. Because submarine ...
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(1997)Previously published microscopic observations of the heterogeneous oxidation of Mn(II) at hematite and albite surfaces were used to develop rate expressions that model the changes in solution composition during oxidation ...
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(2001)The concentration of mass during regional metamorphism and metallogenesis requires interactions between regional and local hydrothermal systems that are scale- and time-dependent. During regional low- to medium-temperature ...
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(2001)Statistical self-similarity in the spatial and temporal variability of rainfall, river networks, and runoff processes has been observed in many empirical studies. To theoretically investigate the relationships between the ...
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(2004)Paleogeographic reconstruction of the northern Siberian craton against southwestern Laurentia, in accordance with paleomagnetic data, basement piercing points, and the best fit of the rift margins, aligns Mesoproterozoic ...
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(1999)Dissolved organic matter (DOM) was isolated from surface waters of Delaware Bay along a transect from freshwater to the coastal ocean and fractionated by tangential flow ultrafiltration into high (1-30 kDa; HDOM) and very ...
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(2004)Two surface sediments from the Danube delta and an adjacent area of the northwestern Black Sea were subjected to sequential treatment in order to obtain comprehensive qualitative and quantitative information on carboxylic ...
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(2004)Several types of fluid immiscibility may affect the evolution of volatile-rich magmatic systems at the magmatic–hydrothermal transition. The topology of silicate–salt–H2O systems implies that three-fluid immiscibility ...
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(1997)In order to define the conditions for the formation of immiscible carbonatite magmas in the lithosphere and in the crust, we have conducted phase equilibrium experiments to determine the effect of pressure and temperature ...
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(2003)Systematic analysis of phase equilibria near the liquidus of silicate-carbonate systems indicates that silicates and carbonates are structurally compatible components and should mix within broad limits when in the molten ...
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(1996)Field evidence from intrusive and effusive carbonatites supports the existence of calciocarbonatite magmas. Published experimental evidence in the model system Na2O−CaO−Al2O3−SiO2−CO2 indicated the formation of nearly pure ...
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(1997)The synthetic system Na2O–CaO–Al2O3 –SiO2 –CO2 has been widely used as a model to show possible relationships among alkalic silicate magmas, calciocarbonatites, and natrocarbonatites. The determined immiscibility between ...
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(1989)We studied the possibility that the Khibiny apatite-nepheline ores were formed from immiscible liquid phases in a system composed of 13 main components - P2O5, SiO2, TiO2, Al2O3, Re2O3, Re2O3, FeO, CaO, MgO, SrO, Na2O, K2O ...
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(1996)A local petro-hydrothermal liquid sulfur - gas - water - rock system was formed at the bottom of a thermal lake situated within the present-day ore-forming hydrothermal system of the Uzon Caldera (East Kamchatka) after a ...
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(2005)We experimentally determined the boron partitioning and boron isotope fractionation between coexisting liquid and vapor in the system H2O−NaCl−B2O3. Experiments were performed along the 400 and 450°C isotherms. Pressure ...
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(1995)Melting experiments conducted at 28 and 30 kbar on synthetic starting materials with compositions appropriate to terrestrial (depleted) and lunar mantles (undifferentiated and cumulate) show that (1) low-degree melts of ...
Now showing items 6533-6552 of 21768