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Now showing items 15565-15584 of 39126
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(1993)Carbon-isotope analysis of CO2 has been undertaken on pure mineral separates from six cordierite-bearing assemblages from Kerala, South India, to identify the significance of fluid inclusions and channel-trapped volatiles ...
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(2004)Enclaves are often incorrectly used to measure magmatic strains in plutons. We emphasize that microgranitoid enclaves are not like other ellipsoidal markers used to determine strain for the following reasons. (1) Adjacent ...
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(2003)Large diamonds (10–200 carats) from Udachnaya, Mir, and Aikhal kimberlite pipes of Yakutia contain variable mineral inclusions typical of diamonds of smaller size. Among these inclusions, extracted from outer portions of ...
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THE SIGNIFICANCE OF MULTIPLE SATURATION POINTS IN THE CONTEXT OF POLYBARIC NEAR-FRACTIONAL MELTING (2004)Experimental petrologists have successfully located basaltic liquid compositions parental to mid-ocean ridge basalt that are, within experimental resolution, multiply saturated with three-phase harzburgite or four-phase ...
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(2004)Amphigraptus divergens Lapworth is known to be restricted, in Britain, to the linearis Biozone, and its occurrence in the type Ashgill Series reinforces Rickards' prior independent attribution of that part of the type ...
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(2003)All previous versions of a physically based land-surface model SWAP have assumed for simplicity that vegetation is fully covered by snow during the cold season. Such assumption is reasonable only for the regions dominated ...
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(1997)The review and recalculation of all experimental data on the solubility of quartz and amorphous silica in liquid water and saturated vapour along the lower three-phase curve up to the critical end-points give the relation: ...
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(1996)Pyrite framboids are densely packed, generally spherical aggregates of submicron-sized pyrite crystals. In this study, a survey was made of framboid size distributions in recently deposited sediments from euxinic (Black ...
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(2001)The cranial anatomy of Orlovichthys limnatis, a Famennian, Late Devonian dipnoan from the Orel region of central Russia, is described on the basis of an almost completely preserved skull, a mandible, and numerous elements ...
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(2001)An almost complete skull with teeth of Archaeoryctes euryalis sp. nov., one of the earliest members of the family Didymoconidae, is described from the Tsagan-Khushu locality in Mongolia (Upper Paleocene, Naran Bulak ...
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(2003)Carbonatite and alkaline magmatism repeatedly occurred within the southwestern Siberian Platform and its folded surrounding during Late Riphean, Early-Middle Paleozoic, and Late Mesozoic. The least determined is the timing ...
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(1996)The Sm-Nd isochron age was defined for rocks from various associations which make up part of the ophiolite assemblage of the Ozernaya zone of the early Caledonides. The age of gabbroids and tholeiite basic rocks of the ...
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(1989)The solidus for a fertile peridotite composition (“Hawaiian pyrolite”) in the presence of CO2 has been determined from 14 to 35 kbar. The solidus shape inP-T space is consistent with previous studies in the model system ...
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(2004)Abyssal tholeiite is generated by partial melting of the upper mantle. The mantle sections of ophiolite complexes show that partial melting leaves mantle residua that are lherzolitic or harzburgitic, harzburgite being the ...
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(1995)The solubility of Au-Ag alloy (electrum) + AgCl (chlorargyrite) was measured in aqueousHCl solutions at 300°C. Equilibrium between the two solid phases provided a convenient and highly effective fo2 sensor. By varying the ...
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(2003)The solubility of calcite in H2O was measured at 6-16 kbar, 500-800 °C, using a piston-cylinder apparatus. The solubility was determined by the weight loss of a single crystal and by direct analysis of the quench fluid. ...
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(2001)H2O and CO2 solubilities in a natural rhyolite melt (Erevan Dry Fountain (EDF), Armenia) in equilibrium with H2O-CO2 fluids were determined at 200 and 500 MPa and at 800°C and 1100°C. The composition of the fluid phase ...
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(1995)Solubilities of Ir in silicate melts of anorthite-diopside eutectic composition were determined by equilibrating IrPt-loops with silicates at a wide range of oxygen fugacities, from air to about 1.7 log units below the ...
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(1999)The solubility of iron(III) hydroxide as a function of pH was investigated in NaCl solutions at different temperatures (5-50°C) and ionic strengths (0-5 M). Our results at 25°C and 0.7 M in the acidic range are similar to ...
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(1995)An experimental approach was developed to measure the mutual solubilities of organic fluids and water over a wide range in temperature and pressure. By using a gold bag, rocking autoclave, and a precision high pressure ...
Now showing items 15565-15584 of 39126