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Trace Element Abundance Relationships in the Multi-stage Comagmatic Fractional Crystallization and Their Applications 被引量:2
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作者 汪云亮 李巨初 +1 位作者 chengdu college of geology chengdu 《Chinese Journal Of Geochemistry》 EI CAS 1993年第1期35-43,共9页
In this study a mathematical expression of trace element abundance relationship for the mul-ti-stage comagmatic fractional crystallization has been established ,based on geochemical studies of the Emeishan basalt-trac... In this study a mathematical expression of trace element abundance relationship for the mul-ti-stage comagmatic fractional crystallization has been established ,based on geochemical studies of the Emeishan basalt-trachyte series and adjacent mafic-ultramafic layered intrusions, as well as on the avail-able data for basalt, andesite, dacite and rhyolite series in southern Andes,Chile ,which have been well documented.It is demonstrated that the abundance constant (R) for a given trace element at dif-ferent stages of fractional crystallization of a parental magma is highly variable,which can be used as a criterion to divide fractional crystallization stages. 展开更多
关键词 示踪元素 岩浆 火成岩 混合作用 同源岩浆
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