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Browsing ELibrary by Title
Now showing items 8946-8965 of 21936
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(1997)New data are reported on the composition of ophiolite ultrabasite minerals from the Altai-Sayan folded area (ophiolite associations from the Altai Mountains, Kuznetsk Alatau, West Sayan, and South Tuva). Peculiarities of ...
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(2004)Single-crystal X-ray data were collected from a natural fibrous mordenite crystal of composition K2.99Ca1.85Na1.06Al7.89Si40.15O96⋅28H2O and from a platy synthetic mordenite crystal of composition Na6Al6.02Si42.02O96⋅19H2O. ...
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(2002)Pedogenic carbonate cutans (coatings, pendants, rinds) on coarse clasts are common in stony soils of arid and semi-arid regions dominated by open vegetation. This paper gives an overview of the potential of the carbonate ...
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(2001)This review considers the role of pedogenic processes in modifying wind-blown dust (loess), concentrating particularly on the ways that resulting properties may be interpreted as indicators of past climatic conditions and ...
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(2001)Penetration of columnar convection in a rapidly rotating spherical shell into a stably stratified fluid layer near the outer boundary is investigated. An analytical expression for the penetration thickness is derived by ...
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(1995)Reliable evaluations of whether a phase transformation boundary with a negative Clapeyron slope will cause mantle convection to be stratified will require models to include good simulations of plates and plumes. Here ...
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(2002)The study of peperite is important for understanding magma-water interaction and explosive hydrovolcanic hazards. This paper reviews the processes and products of peperite genesis. Peperite is common in arc-related and ...
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(2002)Murzinka and Dzhabyk are continental-type batholiths of the middle and southern East Uralian domain. They comprise mainly undeformed peraluminous K-rich granites whose elemental composition is similar to some late-Variscan ...
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(1997)We present enhanced-precision viscosity determinations for Na2O-Al2O3-SiO2 liquids which challenge the commonly held view that melts of tectosilicate stoichiometry in this system are fully polymerised. The maximum in melt ...
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(1997)The evolution of meander belts is simulated using a single-channel model of freely meandering dynamics with constant discharge and no avulsion. This means that lateral migration of the river is not confined by a valley ...
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(2003)Neritic carbonates (NC) were one of the most prominent facies of the Peri-Tethyan domain. From the Moscovian to the end of Tertiary times, most parts of the area concerned were included in, or in the vicinity of, the ...
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(1995)Periclase (001) surfaces were etched in dilute acid at pH 2 and 4. X-ray reflectivity measurements on a reference crystal constrained the initial roughness of these surfaces to be approximately 30 a. The reference crystal ...
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(1996)Comparison of 360 trace element analyses of clinopyroxenes from peridotites indicates that clinopyroxene composition cannot discriminate between suboceanic and subcontinental mantle. Clinopyroxenes from abyssal and fore-arc ...
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(2002)Melting experiments at 2100-2400°C and 22-24.5 GPa to determine the liquidus to solidus phase relations and element partitioning coefficients were performed on different peridotite compositions: a pyrolite model and a KLB-1 ...
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(2001)One of the goals of igneous petrology is to use the subtle and more obvious differences in the geochemistry of primitive basalts to place constraints on mantle composition, melting conditions and dynamics of mantle upwelling ...
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(1999)The experimental determination of liquid compositions in lherzolite as functions of pressure and temperature provides constraints on mantle dynamics and magma genesis. In this paper, we present a detailed evaluation of the ...
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(1995)Abundant spinel peridotite xenoliths occur in late Cenozoic alkali basaltic rocks in the Sikhote-Alin region at the Pacific margin of the Asian continent. Major- and trace-element compositions of representative peridotite ...
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(2001)Period doubling bifurcation of stress drop is one of the non-linear dynamic phenomena in the transition from stable sliding to stick-slip of rock friction, and the onset of period doubling has been suggested to be related ...
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(2002)Lava dome eruptions commonly display fairly regular alternations between periods of high activity and periods of low or no activity. The time scale for these alternations is typically months to several years. Here we develop ...
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(2004)For more than 100 years mineralogists, physicists, chemists, geologists, and biologists have discussed the formation of periodic Liesegang patterns observed in natural and experimental systems. Spectacular examples of ...
Now showing items 8946-8965 of 21936