岩浆分异作用

研究表明，伟晶岩存在局部岩浆分异作用，岩浆具不混溶性及非均匀性。

The existence of local magmatic differentiation , immiscibility and heterogeneity was proved for the pegmatite magmas .

四川攀西地区新街岩体的岩浆分异作用与金属矿物的成因

The Magmatic Differentiation and The Origin of Metallic Minerals of The Xin Jie Basic and Ultrabasic Rocks in The Panzhihua-Xichang Area , Sichuan

这些过碱性花岗岩的岩浆分异作用很微弱，特征是稀土含量高。

These rocks are characterized by high abundances of REE .

幔源岩浆分异作用、板底垫托作用及局部地壳熔融等在太古代至今下地壳的形成改造和麻粒岩相变质事件中起着关键的作用。

The differentiation of mantle derived magma , underplating and partial melting of the crust , have played an important role in the formation and reformation of the continental subcrust and in the metamorphism of granulite factes .

元素地球化学研究表明，该岩体略为富集LREE，Eu的亏损不明显，表明岩浆结晶分异作用较弱；

According to the element geochemistry , these mafic dykes are characterized by moderate LREE enrichment and no obvious Eu anomalies , which means the weak magmatic fractionation .

这是岩浆结晶分异作用的显著特征。

This is the role of magmatic differentiation salient features . 4 .

这些特征表明，本区三类主体岩石为岩浆结晶分异作用的产物；

All these characteristics show that three kinds of main body rock in this area are the product of crystallization differentiation .

含矿岩体是同化了壳源组分且经历了充分的岩浆重力分异作用后脉动式侵位的。

It seems quite probable that the ore bearing intrusions were formed by repeated intruding after assimilating crustal materials penetrated and after sufficient gravitational differentiation .

本区花岗岩的成因是复杂的，既有花岗岩化作用（交代作用）和深熔作用形成的花岗岩，又有岩浆分异结晶作用的产物。

It is suggested that the genesis of the granites in the region is complex in that they are formed by granitization ( metasomatism ), anatexis and magmatic fractionation .

苏州A型花岗岩的岩浆分异与成矿作用

The metallogenesis and magmatic differentiation of Suzhou A-type granite

橄榄辉石岩包体为Ⅱ类包体，可能为杂岩体原始岩浆早期结晶分异作用所形成的堆积岩碎块。

Olivine-pyroxenites xenoliths belongs to ⅱ type of xenolith and the cumulate chunk maybe result from early crystallization differentiation of primary magma of the complex .

综合岩石学、地球化学和同位素等方面的对比研究，笔者认为八大石闪长质包体属于同源包体，为寄主花岗岩同源母岩浆经结晶分异作用形成的早期产物。

Petrologic , geochemical and isotopic studies prove that the Badashi dioritic enclaves are autoliths and the earlier products generated by crystal fractionation of the host granite parental magma .

岩体以高铝、低镁铁组分，高锶、氧同位素比值为特征，地球化学研究显示它们是泥质岩的深熔作用和岩浆的结晶分异作用所形成的产物。

They are characterized by the high-Al and low-Fe and-Mg composition and high Sr and O isotope ratios . Geochemical study shows that they are the product of anatexis of argillaceous rocks and fractional crystallization of magmas .

微量元素的特征同时显示，早白垩世玄武岩部分熔融程度较低，早第三纪玄武岩部分熔融程度较高，且在不断的部分熔融过程中，形成的岩浆又有结晶分异作用发生。

The characteristics of trace elements also indicate that the Early Cretaceous basalts are the product of low degree partial melting and the Paleogene basalts of high degree partial melting with fractional crystallization occurred on the magma evolutionary processes .

侏罗纪为钾质碱性系列，古近纪为钙碱性系列，而且前者岩浆源较浅，岩浆分异作用差。

The Jurassic volcanic rocks are belong to K alkaline and came from shallow crust with weak repartition of magma .

这种云英质岩浆是在富氟、锂花岗质岩浆液态分异作用的基础上进一步演化形成的。

Preliminary study suggests that the greisen magma was formed by evolution of quasi-greisenic magmas resulting from liquid immiscibility of fluorine-and lithium-rich granitic magmas .

大庙式铁矿的形成与苏长质岩浆密切相关，但含矿物质不是来自于苏长质岩浆的分异作用，而是同时侵位的透岩浆流体。

Nevertheless , the ore-forming materials were derived from the concurrently emplaced transmagmatic fluids instead of from the noritic magma differentiation .