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Information from the Apollo missions has led some investigators to favor a warm ancient Moon (Smith et al., 1970; Wood,1972). This idea has been most recently amplified by Wood (1975) and Walker et al.(1975) who suggest that the petrology of the ancient anorthositic lunar crust can be explained as having resulted from crystal fractionation and gravitational separation in a well-stirred global subcrustal magma chamber referred to by Wood (1975) as a magma ocean.

根据阿波罗任务的信息,部分调研者对早期月球是温暖熔融的青睐有加(参见1970年史密斯团队报告稿和1972的伍德报告)。1975年,伍德和沃克团队进一步加强了这个观点,他们推测:古老月球曾经是熔融的,充分对流、搅拌的全球性岩浆海洋中的重力分离和结晶分异过程能够解释辉长岩月壳的来历。

Information from the Apollo missions hasled some investigators to favor a warm ancient Moon (Smith et al., 1970; Wood,1972). This idea has been most recently amplified by Wood (1975) and Walker et al.(1975) who suggest that the petrology of the ancient anorthositic lunar crustcan be explained as having resulted from crystal fractionation and gravitational separation in a well-stirred global subcrustal magma chamber referredto by Wood (1975) as a magma ocean.

根据阿波罗任务的信息,部分调研者对早期月球是温暖熔融的青睐有加(参见1970年史密斯团队报告稿和1972的伍德报告)。1975年,伍德和沃克团队进一步加强了这个观点,他们推测:古老月球曾经是熔融的,充分对流、搅拌的全球性岩浆海洋中的重力分离和结晶分异过程能够解释辉长岩月壳的来历。

But detail geochemical study indicates (Wu et al., 2002)that those rocks have low Sr〓(0.706), high ε〓(-0.5~-1.9), young age of Nd model age (970-1090Ma) and syngenesis with surrounding I-type granites. The rock originated from partial melting of source igneous rock and belongs to I type granites. The occurrence of high alumina minerals is related to the intense interaction of magma and liquid during the late period of magma evolution, and tetrad REE patterns are formed.

但详细的地球化学研究表明(Wu et al。,2002),岩体具有低的Sr〓(0.706)、高ε〓(-0.5~-1.9)、年轻的Nd模式年龄(970-1090Ma)及与周围Ⅰ型花岗岩的共生关系,认为岩体是火成岩源岩物质部分熔融的产物,属于Ⅰ型花岗岩,高铝矿物的出现与岩浆演化晚期强烈的岩浆—流体相互作用有关,并形成特征的稀土元素四分组效应。

By studying on isotopic chronology, terrane configuration and imaging logging data, the diabase intrusion in Zhanhua Sag is formed by tholeiite magma emplacing in Shahejie formation stratum on the rift tension background Lower Tertiary in North China. The diabase intrusion of Luo151 is composed possibly of three periods magma emplacement.

根据同位素年代学、岩体形态及成像测井资料的综合分析,沾化地区辉绿岩侵入体为早第三纪华北东部地区大规模裂谷拉张背景下,拉斑玄武岩岩浆侵位于沙河街组地层中形成,研究区内罗151井区辉绿岩体可能由三期岩浆侵位形成。

This thesis studies each structural layer's feature:(1) structural layer of basement:it is a Paleozoic folded basement,whose tectonic deformation and magma intrusion is fiercely,and it is affected by the early Hercynian tectonic movement and related to the underthrust and closure (C1) of Zhungaer ocean basin and the areal pressing of continents (C2-3);(2) structural layer of Permian:due to the regional extending and fault depression role in mid-Hercynian,it occurred to the combinations of structure and magma in Santanghu basin and it's periphery area,such as A-granite's stock,batholiths and diabase's dike.

二叠系构造层:受中海西区域性伸展断陷作用的影响,盆地及其周缘地区发育与伸展构造有关的构造-岩浆组合,如呈岩株、岩基状侵位的A型花岗岩以及呈岩墙状侵位的辉绿岩等。

In the area without magma mingling or with weak magma mingling, the host rock is dominated by porphyaceous adamellite showing normal granite fabric.

无岩浆混合作用或岩浆混合作用较弱区段,寄主岩石以似斑状二长花岗岩为主,显示正常的花岗岩结构构造岩浆混合作用强烈区段。

In this study, EPMA and LA-ICP-MS were used to determine the major and trace element concentrations, respectively, of apatites from Transhimalayan granitoids. The results indicate that F, Mn, Sr and REEs in apatites generally show good correlations with compositions of their host magmas and thus have high potential to be utilized as petrogenetic tracers. More specifically, F and Mn contents in apatites are covariant with the aluminosity of the host rocks so that can be used as an indicator for magma differentiation. Combining with Sr and REE data, which show significant variations in apatites from different rock types, these elements may be furthermore used to construct "discrimination diagrams" for more detailed investigations of complex petrogenetic processes such as magma mixing and compositional heterogeneity.

本研究中,电子微探以及雷射烧蚀感应耦合电浆质谱术分别被用以量测藏南火成岩中磷灰石的主量与微量元素含量,微区分析的结果显示,磷灰石的氟、锰、锶以及稀土元素均与岩浆源成分展现良好的对比关系,揭示了它们应用在岩石成因示踪上的优秀潜力:其中,磷灰石氟、锰含量的变化与原岩的铝饱和情形息息相关,因此可以作为岩浆分异程度的指标;而锶以及稀土元素则在不同岩石类型来源的磷灰石中展现了明显的丰度变化,因此综合这些元素将有机会进一步建立岩浆来源的「鉴别图」,甚而以此讨论岩石成因,例如:岩浆混合与源区组成的不均一性。

Kubusunan granite is chracterized by low87Sr/86Sr initial values and high ε values, indicating its origin partly from mantle rocks. The number of microgranular dioritic enclaves is the direct evidence for crust-mantle magma mixing, thus showing that enclaves are the residual formed from the partly fusing of basic magma.

库布苏南花岗闪长岩体具有低锶初始比值I和正ε值,表明花岗岩的来源有地幔物质参与,而大量发育的暗色微粒闪长质包体是壳幔岩浆混合作用最直接的证据,微粒包体是基性源岩部分熔融作用形成的残余体。

The characteristics of elements shows that magma of fine dioritequartz diorites derived from the enriched mantle or lower crust undergone ocean crust subducting and dehydrating, and was formed and emplaced in the process of crust growth. The magma of dioritic porphyritedacitic porphyries emplaced relatively late, it might derive from upper crust or undergo intensive contamination of crustal materials, and was formed in the proces of crust thining. These characteristics suggest that the geodynamics background of the Jinchanggouliang gold deposit formation is the transition process from compression to extension.

元素地球化学特征显示:细晶闪长岩-石英闪长岩的岩浆源于富集地幔或洋壳俯冲脱水交代的下地壳,地壳增厚过程产生并就位;闪长玢岩-英安斑岩类的岩浆就位相对晚,来源具有上地壳性质或被地壳物质强烈混染,地壳减薄过程形成;这种特征暗示金厂沟梁金矿形成的地球动力学背景是在地壳挤压增厚转化为伸展减薄过程。

The hypo-volcanic crytoexplosion Breccia rock body is formed of granite magma, which is rise to the lower of the earth s crust along the east-western shear zone and exploded below the Archean fundus rock. The felstone vein and the hypo-volcanic crytoexplosion Breccia rock are from the same magma source, and are formed in the different evolution stages.

香炉碗子金矿区分布的次火山隐爆角砾岩体是由花岗质岩浆沿东西向脆~韧性剪切带上升到地壳浅部隐爆太古代基底岩石所形成,霏细岩脉与次火山隐爆角砾岩来自同一岩浆源,为同一岩浆活动不同演化阶段所形成的。

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