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Browsing ELibrary by Title
Now showing items 9126-9145 of 21936
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(2000)Liquidus phase relations in the system diopside–kalsilite–forsterite–quartz with 3 wt% F were examined at 1 bar and the locations of important invariant points were determined at 18 kbar. At all pressures within this range ...
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(2000)Liquidus phase relations in the system diopside-kalsilite-forsterite-quartz with 3 wt% F were examined at 1 bar and the locations of important invariant points were determined at 18 kbar. At all pressures within this range ...
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(2005)High-pressure–high-temperature experiments were performed in the range 7–15 GPa and 1300–1600°C to investigate the stability and phase relations of the K- and Ba-dominant members of the crichtonite and magnetoplumbite ...
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(2002)Almost 30 years ago, Schneeberg [Econ. Geol. 68 (1973) 507] used the Ag/AgI/Ag2+xS, fS2(vapor) electrochemical cell for directly measuring the fugacity of sulfur vapor in equilibrium sulfide reaction mixtures in the Cu-Fe-S, ...
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(2003)Using a previously published, internally consistent thermodynamic dataset and updated models of activity-composition relations for solid solutions, petrogenetic grids in the model system KFMASH (K2O-FeO-MgO-Al2O3-SiO2-H2O) ...
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(2000)Alpine-type peridotites and associated pyroxenites are found as lenses in the continental crust in many different orogens. The reconstruction of the pressure–temperature ( P – T ) evolution of these rocks is, however, ...
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(2003)An important control on magma rheology is the extent to which the magma crystallizes during ascent as a result of the effective undercooling created by volatile exsolution. To assess this undercooling, we need to know the ...
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(2002)Synthesis of fluid inclusions in the CH4-H2O-NaCl system was accomplished by subjecting fractured quartz or fluorite, along with known quantities of CH4, H2O, and NaCl, to a pressure of 2 kbar and temperatures of 300, 400, ...
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(1998)The polymorphic relations for Mg3(PO4)2 and Mg2PO4OH have been determined by reversed experiments in the temperature-pressure (T-P) range 500–1100°C, 2–30 kbar. The phase transition between the low-pressure phase farringtonite ...
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(2000)The phase relations in the Fe2SiO4-Fe3O4 binary system have been determined between 900 and 1200 °C and from 2.0 to 9.0 GPa. At low to moderate pressures magnetite can accommodate significant Si, reaching XFe2SiO4=0.1 and ...
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(2004)High-pressure experiments were conducted to investigate the phase relations in the binary system Fe-FeSi at a pressure of 21 GPa and temperatures between 1350 and 2200 °C by using a multi-anvil apparatus. The system has a ...
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(2001)Run products from high pressure experiments at 800-1,200 C and 5-14 GPa (corresponding to depths of 150 to 420 km) on a serpentine bulk composition [close to Mg3Si2O5(OH)4] were analysed by optical microscopy, micro-Raman ...
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(2004)We have experimentally investigated the phase and melting relations of garnet + clinopyroxene + carbonate assemblages at 2.5–5.5GPa, to assess the feasibility of carbonated eclogite as a source for some crustally emplaced ...
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(1997)Phase relations of natural phlogopite and phlogopite + enstatite compositions were determined experimentally at pressures of 4-8 GPa and temperatures of 1200-1500°C using a uniaxial split-sphere apparatus. Phlogopite in ...
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(2003)The pseudo-binary system CaMgSi2O6-KAlSi2O6, modeling the potassium-bearing clinopyroxene (KCpx) solid solution, has been studied at 7GPa and 1,100–1,650C. The KCpx is a liquidus phase of the system up to 60mol% of KAlSi2O6. ...
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(1987)Phase relations along the join Ca 2 Mg 4 Fe2+Si 8 O 22 (OH) 2 (Actinolite)-NaCa 2 Mg 3�2 Fe 0�8 2+AlSi 6 Al 2 O 22 (OH) 2 (Pargasite) have been studied at P H 2 O = 1 kb and the oxygen fugacities defined by the iron-wustite(IW) ...
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(2000)The phase relations of divariant and trivariant assemblages involving combinations of phengite, chlorite, biotite, K-feldspar, quartz and H2O in the KFASH, KMASH and KFMASH systems were calculated using a single thermodynamic ...
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(1995)Solid solution of #25 mole% Al2O3 expands the compositional stability field of Mg,Fe silicate perovskite well beyond the limits encountered in the simple ternary system MgO-FeO-SiO2. Aluminous perovskites synthesised in ...
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(2003)Halite single crystals in saturated solution were used to study dissolution precipitation creep (DPC) at conditions where plastic deformation is negligible. Specifically, the free unloaded surfaces of these crystals were ...
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(2000)The phase transformations which take place in peridotite between 19 and 25 GPa have been investigated by performing experiments at closely spaced pressure intervals. All reactions involving Mg-perovskite are influenced by ...
Now showing items 9126-9145 of 21936