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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。
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In addition, the features of elemental geochemistry of all samples suggest that (1) the EarlyTriassic andesitic rocks, characterized by characteristic natures of island arc volcanics, likely erupted in the subduction setting; that (2) the generation of LateTriassic rhyolites with an affinity of Alike granite and synchronously main body granites in the Lincang batholith displaying similar geochemical features, is closely related with the postcollision or latecollision setting; that (3) although the LateTriassic basic rocks partly show island arc volcanics such as highAl contents and NbTa depletion, some of them possessing highMg contents and mostly having traceelement ratios similar to intraplate basalt, which indicates that they erupted in the postcollision rift environment.
元素地球化学特征表明,早三叠世火山岩具有典型的岛弧火山岩的特征,暗示其很可能形成于俯冲的构造环境;中三叠世晚期的流纹岩与临沧花岗岩基主体具有非常相似的地球化学特征,结合其流纹岩具有A型花岗岩属性,表明该区中三叠世火成岩形成于碰撞后的构造背景;而晚三叠世基性火山岩虽然在地球化学特征上显示出与岛弧火山岩相似的高铝和NbTa的亏损,但其中部分火山岩具有高镁和板内玄武岩的微量元素比值特征,说明这些火山岩可能形成于碰撞后裂谷环境。
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There is a random series ,when looking for any an element in this series,we can achieve this by the method of bisectional searching,also the number of search times will be displayed.when using this method ,first of all you should sequence the series bigger and bigger.
要求随机关生一个序列,任意查找其中一个元素时,采用二分搜索法实现,并且还能显示查找次数。
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Using phalloidium staining we observed a sharp disappearance of the actin stress fibers, formation of extensive microvilli as demonstrated by the scanning microscopy and formation of typical bile canaliculi structures as confirmed by a monoclonal antibody to aminopeptidase N which is a BC specific antigen. The appearance of microvilli and BC suggested that selenium is able to elicit a differentiation reprogramming.
利用Rhodamine pholloidin 染细胞内的F-actin 显示出细胞内的stress fiber 大部分都消失;利用Scanning electron microscope可以检测到细胞表面有明显的microvilli 的结构;并且利用标定胆小管的特殊蛋白可以发现硒元素可以诱导HuH7 肝癌细胞分化产生胆小管的结构。
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The analysis of the chemical composition of mineral inclusions including olivine, garnet, clinopyroxene, and chromite from Mengyin and Fuxian diamonds, reveals that the major elements of mineral inclusions in diamond show characters with high depletion in basaltic composition.
对山东蒙阴、辽宁复县两地金刚石中包裹体矿物包括橄榄石、石榴石、单斜辉石和铬铁矿的化学成分进行了深入分析,金刚石包裹体矿物的主量元素显示华北地台至少在古生代金伯利岩侵位时具高度亏损玄武质的难熔克拉通岩石圈地幔特征。
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It is showed that Class Ⅲ malocclusion samples in this study were significant characterized with longer mandibular corpus, smaller condyle and coronoid process. Meanwhile, the prominence of size difference on chin area was observed, associated with maximum size difference localized on menton area.
两组的有限元素形态分析法(finite element analysis morphometry)比较结果显示:三级异常咬合者有较长的下颚骨体,颏部区域也比正常咬合者大,但condyle及喙状突则较小;另外menton附近区域有最大但是小范围的尺寸差异,是三级异常咬合者和一级正常咬合的差异特徵。
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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。
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The foldable slider 10 with the wings 21 and 22 in the open position, FIG. 9, is positioned above the profile elements 14 and 15 as shown in FIG.
在开着的位置,图 9 中的和翅膀 21 和 22 的可折叠的滑动器 10,被放置在如图 7 所显示的描绘元素 14 和 15 上面。
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With the unique style, profound implications and charming cultural connotations, the richly historied Uighur patterns can provide designers with a wealth of designing elements and creative inspirations.
历史悠久的新疆维吾尔族纹饰,以其独立别致的格调,显示出意蕴深厚、富有魅力的民族文化内涵,为设计师提供了丰富的设计元素、创意灵感和线索。
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The volcanic rocks consist of trachytic basalt, basaltic latite, latite and trachyte. The characteristics of this volcanic sequence are: low TiO2 and silica saturation, high alkalis, high K2O/Na2O value and Fe2O3/FeO value, high and variable Al2O3, enrichment in Rb, Sr, Ba, Zr, U, Th and LREE.
岩石硅近饱和,全碱含量(尤其是K2O)高,K2O/Na2O、Fe2O3/FeO比值大,Al2O3含量高且变化大,TiO2含量低,富集Rb、Sr、Ba、Zr、Th、U和LREE等元素,稀土配分为轻稀土富集型,锶、铅、氧等同位素显示了岩浆的幔源特征。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力