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- Sr and Pb isotopic compositions are identical to or similar to some ocean island basalts and mantle plume constituent. Nd、Sr、Pb同位素组成与洋岛玄武岩和一些地幔柱组分相同或相近。
- The osmium isotopic compositions and model age of mantle peridotite xenoliths from Jiangsu-Anhui area and their geological significance. 苏皖地区幔源橄榄岩捕虏体的锇同位素组成、模式年龄及其意义。
- The carbon and oxygen isotopic compositions of wall-rocks, altered wall-rocks and hydrothermal calcite of the Xikuangshan Sb deposit were studied. 本文系统地研究了锡矿山锑矿床的围岩、蚀变围岩和热液成因方解石的碳、氧同位素组成。
- Isotopic compositions and fluid inclusions for the calcite filling in Dagang oil field fractures provided the paleo environment and paleotemperature. 根据它们的形状、边界和分布可将其分成不同类型。
- The hydrogen isotopic compositions in single hydrocarbons was measured by gas chromatography-thermoconversion-mass spectrometry (GC/TC/MS). 用色谱-热转换-质谱(GC/TC/MS)对天然气单体烃氢同位素组成进行了测定。
- The data of this paper demon-strate that ore sulfides of the Gangdise porphyry copper belt have the same S and Pb isotopic compositions as ore-bearing porphyries. 本文资料显示,该带的含矿斑岩和矿石硫化物具有完全一致的S、Pb同位素组成。
- The whole-rock Pb isotopic composit ions of the North Dabie Complex(NDC),the South Dabie Complex(SDC)and the Cretaceous granites in the ea st Dabie Mountains are reported. 研究了大别山东部北大别变质杂岩、南大别变质杂岩和白垩纪花岗岩的全岩Pb同位素组成。
- How could such a change in isotopic composition have come about? 同位素的组成有这样的变化，究竟是如何发生的？
- In this study, Nd isotopic compositions and ages of detrital zircon of schists from the Haizhou Group in the southern part of the Sulu terrain are presented. 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京;
- Oxygen and hydrogen isotopic compositions of fluid inclusions within quartz from the gold veins suggest that the ore-forming fluid came from meteoric water. 矿体石英中的流体包裹体氢、氧同位素组成特征,显示成矿热液来源于大气降水。
- The isotopic compositions of lead were determined on the samples of whole rock, chondrule, olivine, pyroxene and troilite from Bo County chondrite (class LL4) of Anhui prov. , China. 本文报道了安徽亳县LL4型球粒陨石的全岩、球粒、橄榄石、辉石和陨硫铁的铅同位素比值;以及上述部分样品的铀、钍、铅的含量.
- The study is focused on the characteristics of mineralogy, chemistry and isotopic compositions of aerosols.Mathematical statistics is applied to distinguish and explain the sources of aerosols. 大气物源研究主要集中在颗粒物矿物学特征、化学成分及同位素组成等几个方面，并用数理统计方法建立起两者的相关关系，据此判别和解释大气污染物的来源。
- The origin of the nodular limestone of Daye Formation of Lower Triassic in the Middle Yangtze region is studied on the basis of their petrologic characterishcs,chemical and isotopic compositions. 本文从基本特征出发，结合岩石学特征，尤其是化学成分及同位素组成等特征，对中扬子地区下三叠统大冶组瘤状灰岩的成因进行了探讨。
- It is important to avoid the use of uranium compounds of unspecified isotopic composition. 要避免使用那种非专用的同位素成份的铀化合物。
- Another mystery is the isotopic composition of xenon found in minerals from the Oklo uranium deposit in Gabon, Africa. 另一个令人费解的问题就是在非洲加蓬的奥克洛铀矿床的矿物中所发现的氙同位素组成。
- Stable isotopic composition of fossil ostracode is used as an ideal proxy for paleo-lake sedimentary environments. 摘要介形虫化石壳体被认为是反映古湖泊沉积环境的理想对象。
- Title： Zircon age and Sr-Nd-Hf isotopic composition of migmatite in the eastern Tengchong block,western Yunnan. 关 键 词： 滇西地区;基底;混合岩;锆石年龄;
- The stable variation of lead isotope compositions suggests that it belongs to normal lead. 铅同位素组成变化不大,属正常铅。
- WHAT CAN WE LEARN FROM OXYGEN AND HYDROGEN ISOTOPE COMPOSITIONS OF TREE-RING CELLULOSE IN HIGHER PLANTS? 树年轮纤维素稳定同位素比率的生态学意义?
- The research also shows that there is not any change in the stable carbon isotopic composition in all these river systems caused by the quake. 本研究同时显示921地震并未对这些河川之稳定碳同位素组成造成影响。
