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    Comparing with the Yangtse Estuary and the Huanghe Estuary, the contents of Al and Fe are higher, but the contents of Ca and P are lower in the Pearl River Estuary, indicating that climates, geologic backgrounds and types of estuaries influence the contents of major elements in estuarine sediments.
    与长江口和黄河口相比,珠江口沉积物Al、Fe等元素质量分数高,Ca、P等元素质量分数低,反映了"气候控制效应"、区域地质背景和河口类型对沉积物主元素质量分数的影响.
    Clustering analysis indicates that the sampling stations may classified into four groups which basically reflected the characteristics of sedimentation environments and distributions of major elements in Pearl River Estuary.
    聚类分析结果表明,研究区站位可分为4类,这种元素地球化学分区反映了珠江口不同区域沉积环境和主元素分布的特点.
    The study on the Zhashui rapakivi granite body in this paper shows that the rapakivi granite has the characteristics of I- and A-type granite in terms of geochemistry of major elements, trace elements, rear earth elements and primitive Isr.
    研究表明,柞水岩体的主元素、微量元素及稀土元素地球化学、Sr 同位素初始值 I_(Sr)等清楚的显示具有I-型和A-型花岗岩特征,大地构造环境判别属碰撞后隆升阶段或造山后花岗岩。
    The comparisons of major elements, trace elements, the rare earth el ements and the isotopic geochemical characteristics of amphibole supracrustal ro ck inclusions in TTG complex area of Dengfeng Group and metamorphic medium-basi c volcanic rocks in greenstone area have shown that both metamorphic medium-bas ic volcanic rocks and amphibole supracrustal rock inclusions are contemporaneous and isogenous, they have the evolutional trend of tholeiite to calc-alkaline b asalt.
    对登封岩群TTG杂岩区内的斜长角闪质表壳岩包体以及绿岩区的变质中基性火山岩对比研究表明,其主元素、微量元素、稀土元素和同位素地球化学特征等指示该区的变质中基性火山岩同时同源,具有由拉斑玄武岩向钙碱性玄武岩演变的趋势。
    The content of major elements, such as Fe, Mg, Ca and Al, and trace elements, such as Ti, Sr, Ni, Cr and Co, is linearly correlated to that of SiO2, which suggests that the different volcanic rocks in the basin should be the product of fractional crystallization of congenetic magmas. The parental magma may be generated by the partial melting of an enriched mantle wedge formed by the metasomatism of slab-derived fluids in an active continental margin tectonic setting.
    FeO、MgO、CaO、Al2O3、TiO2等主元素和Sr、Ni、Cr、Co等微量元素的含量与SiO2含量呈明显的线性相关关系,表明该区火山岩可能是同源岩浆分异的产物,岩石形成于活动大陆边缘的构造环境,并由遭受消减板块流体交代的富集地幔楔部分熔融而形成。
    The Mesozoic and Cenozoic detrital rocks developing in Anqing-Qianshan areas located on the southeast foot of Dabie Mountains,comprise of mainly greywacke,secondly lithic arenite and arkose on the base of their major elements.
    位于大别山东南麓的安庆-潜山地区中新生代碎屑岩比较发育,主元素分析表明,砂岩主要为杂砂岩,其次是岩屑砂岩和长石砂岩。
    The upper mantle beneath eastern North China contains three mantle end members, they are the asthenospheric mantle, the surviving Archaean old lithospheric mantle (1), and the present lithospheric mantle (2). The asthenospheric mantle is characterized by abundance in major elements, depletion in trace elements, and thermal and plastic rheological behavior. The Archaean old lithospheric mantle is represented by harzburgite, and it is relatively poor in major elements, rich in trace elements, and has a cold and rigid behavior.
    现今的地幔是由软流圈地幔(热的,主元素饱满、微量元素亏损的,塑性流变性质的)、古老岩石圈地幔(地幔1,冷的,主元素贫瘠、微量元素富集的,刚性的,以方辉橄榄岩为代表)以及现今的岩石圈地幔(地幔2,主元素饱满、微量元素亏损,以二辉橄榄岩为代表,可能包括多时期形成的)组成。
    Whole rock analyses including major elements, trace and REE elements and Sr-Nd-Pb isotopic compo-sitions were conducted to illustrate geochemical characteristics and magma source signature of Eogene basalts in Yangxin area and reveal the original geodynamic background of Bohai bay basin.
    采用主元素、微量元素和Sr-Nd-Pb同位素地球化学研究手段和分析方法,阐明了阳信地区古近纪玄武岩地球化学和源区特征,揭示了渤海湾盆地形成的地球动力学背景。 研究认为,阳信地区古近纪玄武岩为钾质碱性橄榄玄武岩;
 

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