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Browsing ELibrary by Title
Now showing items 8810-8829 of 21821
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(2002)We have tested the additivity of partial anhysteretic remanent magnetization (pARM) for suites of eight synthetic magnetites with mean grain sizes from 65 nm to 18 mm and 18 natural samples including lake sediments, oceanic ...
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(2002)One necessary condition for successful determination of relative paleomagnetic field intensity using anhysteretic remanent magnetization (ARM) methods is reciprocity: a partial ARM, produced by a steady field H applied ...
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(2004)Pressures at which partial crystallization occurs for mid-ocean ridge basalts (MORB) have been examined by a new petrological method that is based on a parameterization of experimental data in the form of projections. ...
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(2001)Laumontite is a common zeolite mineral indicative of low-grade metamorphism of lavas and volcaniclastic sediments. Stoichiometric laumontite (CaAl2Si4O12.4.5H2O) dehydrates in air at 298.15 K, 1 bar to leonhardite ...
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(1991)Inverse theory is used to calculate the melt distribution required to produce the rare earth element concentrations in a wide variety of terrestrial and extra-terrestrial magmas. The concentrations of the major and minor ...
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(2002)A petrological study was carried out on Mg-skarn-bearing dunite cumulates that are part of the Neo-Proterozoic Ioko-Dovyren intrusion (North Baikal region, Russia). Skarn xenoliths contain brucite pseudomorphs after ...
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(2003)A high temperature, deep borehole disposal scheme for nuclear waste is outlined. This requires that granite host rock can be partially melted by the heat from the waste then completely recrystallized, both on the time scale ...
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(2001)Recent partial melting experiments on peridotite indicate that mantle peridotites with Mg# 89 can produce primitive mid-ocean ridge basalt by partial melting at pressures greater than 1.5 GPa followed by extensive olivine ...
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(2002)The partitioning of an extensive suite of trace elements between garnet, clinopyroxene, and hydrous tonalitic melts has been studied experimentally at 1.8 GPa and 1000–1040°C. The knowledge of trace element partitioning ...
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(2002)Worldwide, most eclogite xenoliths from kimberlites display evidence of partial melting, brought about by the introduction of K-Na-rich fluids. This is particularly well developed in eclogites from Udachnaya, Mir, and other ...
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(1988)Analysis of glasses in lherzolite nodules should allow the process of partial melting to be traced in its earliest stage, because such rocks are among the few sources of information on the chemical and mineral compositions ...
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(1999)A study of crustal xenoliths from Cenozoic alkaline basalts revealed that almost all of the samples from the Baikal Rift Zone and roughly half of the collection of Mongolian xenoliths had been involved in partial melting. ...
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(2001)We present the results of numerical simulations to explore the effects of periodicity of basalt intrusion on the degree and timescales of melting of mafic lower (arc) crust. Melt production as a function of temperature was ...
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(2004)The compositions of multiply saturated partial melts are valuable for the thermodynamic information that they contain, but are difficult to determine experimentally because they exist only over a narrow temperature range ...
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(2004)The compositions of multiply saturated partial melts are valuable for the thermodynamic information that the contain, but are difficult to determine experimentally because they exist only over a narrow temperature range ...
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(2004)The compositions of multiply saturated partial melts are valuable for the thermodynamic information that they contain, but are difficult to determine experimentally because they exist only over a narrow temperature range ...
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(2001)Anatectic migmatites commonly show both prograde (entropy producing) and retrograde reactions between minerals and melt. The final textures, mineral modes and mineral chemistries are affected by four successive processes: ...
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(2001)The volumes and expansivities of four hydrous phonolite glasses and liquids have been measured by dilatometry from 300 K up to the glass transition and over a 50 K interval just above the glass transition. The partial molar ...
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(1999)Volumetric measurements have been conducted on 7 Ni- and Co-containing sodium disilicate liquids within a compositional range varying from 0 to 9 mol% of NiO and from 0 to 23 mol% of CoO and over a large temperature interval ...
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(1997)Natural monazites of different grain sizes were treated experimentally under hydrothermal conditions and their U-Pb isotope systematics measured before and after the runs. Runs were carried out with monazite grain size ...
Now showing items 8810-8829 of 21821