Thermodynamic Properties of Silicate Melts

Thermodynamic Properties of Silicate Melts
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硅酸盐熔体的热力学性质

DOI:
10.1007/978-94-010-1252-2_15
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发表时间:
1977
期刊:
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影响因子:
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通讯作者:
D. G. Fraser
D. G. Fraser
中科院分区:
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文献类型:
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作者:
D. G. Fraser

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目前实验火成岩学的主要问题之一是在简单的合成系统或给定的天然岩石成分中观察到的附加组分对液相线边界的影响。这种影响的岩石学意义可能是实质性的。例如,向透辉石-镁橄榄石-二氧化硅的无水体系中加入H2O会导致镁橄榄石和顽火辉石的主相体积都移动到更富含二氧化硅的组合物中(Kushiro,1972)。添加CO2具有相反的效果(Eggler,1974),因为增加了总压(Kushiro,1969)。这些结果总结在图1中。
One of the major current problems in experimental igneous petrology concerns the influence of additional components on liquidus boundaries observed in simple synthetic systems or in given natural rock compositions. The petrological significance of such effects may be substantial. For example, the addition of H20 to the anhydrous system diopside-forsterite-silica causes both the forsterite and enstatite primary phase volumes to move to more silica-rich compositions (Kushiro, 1972). Adding C02 has the opposite effect (Eggler, 1974) as has increasing total pressure (Kushiro, 1969). These results are summarized in Fig. 1.