锆的

This paper reports the results of highly precise zircon SHRIMP U-Pb dating of quartz albitite in the volcanic-sedimentary series of the Tuolugou cobalt deposit, Golmud, Qinghai. Analyses of eight spots presented 206Pb/238U ages of 455 to 483Ma with a weighted mean age of 468±9Ma, which represents the timing of submarine volcanic exhalation in this area. Therefore, the age of the host rocks of the Tuolugou ore district is redefined as Ordovician, which implies that regionally the main part of the Naij Tal Group should be Early Paleozoic in age.

青海格尔木驼路沟矿区赋矿火山－沉积岩系中的石英钠长石岩样品锆石SHRIMP U-Pb精细测年结果表明，该岩石具有一组8个测点构成的455~483Ma的206Pb/238U年龄数据，加权平均年龄为468Ma±9Ma，应代表本区海底火山喷流作用的时间，因此重新厘定了矿区内含矿岩系的时代为奥陶纪，同时，这一年龄指示区域上纳赤台群主体的时代应为早古生代。

This paper employs clay stone analysis to Permian-Triassic boundary strata from three deep water sections, Duanshan, Nashui and Liuqiao, located in Guangxi and Guizhou region, southwestern China. The result shows that clay stones from the three localities are composed of illite-montmorillonite mixed layer, montmorillonite and kaolinglite. There are rock fragments such as bipyramid quartz and zircon which are related to volcanic process found in all the sections except in Nashui section.

对贵州断杉、纳水以及广西柳桥3条深水相剖面上的二叠系－三叠系界线附近黏土岩的研究结果表明，在断杉、柳桥剖面黏土岩中的私土矿物主要由伊－蒙混层、蒙脱石和高岭石组成，碎屑物质中存在六方双锥石英、锆石等与火山活动有关的矿物；在纳水剖面黏土岩中未发现与火山活动有关的迹象。

Basing on detailed field survey and laboratory researches on lithological features, mineralogical composition, geochemical and zircon SHRIMP U-Pb data, together with the mineralogical study of chromitite and mantle peridotite heavy mineral bulk sample, various proceedings and recognitions have been achieved:(1) The mantle peridotite is the remnants of partial melted MOR mantle altered by SSZ fluids.

通过详细的野外调查和室内岩石薄片的岩相学、矿物成分、岩石地球化学和锆石SHRIMP U-Pb同位素年代学，铬铁矿和地幔橄榄岩的人工重砂大样的矿物学研究，取得以下进展和认识：(1)认为康金拉地幔橄榄岩为部分熔融MOR地幔残余，叠加了SSZ流体的改造。

Therefore, above-mentioned age dating together with previous chronologic data led us to conclude that the Sulu HP-UHP nappes have two basements: the Early-Middle Protrozoic (≥2400 Ma) basement in the N. Sulu and the Neoprotrozoic (700-800 Ma) basement in the S. Sulu. The basement ages in the N. Sulu together with its western part of the no-UHP metamorphic area (Laiyang-Penglai) are similar and named by the Jiao-Liao-Korea block belong to the NCP. Besides, the boundary between both of the S. Sulu UHP area and JLKB is along north Wulian and south Haiyangsuo.

北苏鲁超高压变质地区的花岗质片麻岩锆石SHRIMP U-Pb定年表明，变质基底的年龄是2400Ma（或＞2400Ma），并经历了1800～1700Ma和～200Ma的变质事件，研究表明苏鲁高压－超高压变质地体由2个不同时代变质基底组成，北苏鲁的变质基底属于北中国板块胶辽朝地块的一部分，形成时代比南苏鲁基底老得多，其与南苏鲁地块之间的界限位于五莲以北到海阳所以南一线。

This thesis studies the volcanic tectono-petrofacies, petrology, mineralogy, geochemistry, isotopic chronology, stratum and high-precision SHRIMP zircon U-Pb datings of the Mt.Yandangshan volcano-intrusive complex, and concludes that: Yandangshan volcanic rock units belong to high-K calc-alkaline acid rock associations, mainly ryholitic and trachytic dacitic in composition. They have A/CNK values of 0.9-1.2 (i.e., aluminium saturation and supersaturation), enriched LREE and LILEs and depleted HFSE. Their 8Eu values are 0.11-0.32, indicating a evident fractional evolution of plagioclase crystallization. Their ∑REE varied very limitedly,(87~Sr/(86)Sri ratios and eNd values are 0.7086～0.7095 and -10.20～-9.96 for volcanic rocks, and 0.7087~0.7095 and -7.6～6.92 for the central intrusive facies syenite, which means that all the igneous rocks from Mt. Yandangshan are evolutional products of magmas with the same source, and that they derived mainly from crust, but mixed with mantle components.

本文从火山构造岩相学、岩石学、矿物学、地球化学、同位素年代学、地层学等方面出发，同时结合高精度SHRIMP锆石U-Pb定年，对雁荡山火山岩进行了系统的研究，确定雁荡山火山岩为一套以流纹质和粗面英安质为主体的高钾钙碱性酸性岩石组合，A/CNK值集中在0.9～1.2之间，为铝饱和或铝过饱和类型；富轻稀土元素和大阳离子亲石元素、相对亏损高场强元素：负铕异常明显，δEu值为0.11～0.32，表明岩浆经历了以斜长石为主的强烈结晶分异作用：岩石样品的∑REE变化有限，火山岩样品的~(87Sr/~(86)Sr_i为0.7086～0.7095，εNd为-10.20～-9.96，中央侵入体石英正长岩~(87Sr/~(86)Sr_i为0.7087～0.7095，εNd为-7.6～-6.92，表明它们是同源岩浆分异演化的产物，物质来源主要为陆壳，但有地幔物质参与。

New reliable UPb age dates of the extensive Cretaceous igneous rocks in the eastern Himalayas suggest that these rocks were emplaced at about 132 Ma, and may represent the erosional and/or deformational remnants of the newly identified ComeiBunbury large igneous province.

新的可靠的锆石UPb年龄指示喜马拉雅带东部措美地区大面积出露的白垩纪火成岩侵位于132 Ma左右，代表了新近在藏南和澳大利亚南西部识别出的经历了强烈变形和深位侵蚀的ComeiBunbury大火成岩省的残余。

Mortar specimens were prepared, in which finely pulverized zirconite which is inactive under the reaction condition of this experiment was used to replace ground carbonatite or ground granulated blast-furnace slag isometrically, so as to investigate the contribution of each material to the performance of the products.

本文采用无活性的锆美石分别等体积替代碱激发碳酸盐矿-矿渣胶凝材料中的碳酸盐矿和矿渣，考察此三个体系的强度变化以及通过DTA分析存在协同效应的可能性，进而通过净浆硬化体的孔溶液成分分析研究复合作用机理。

Meanwhile the SHRIMP zircon U-Pb age of the fine-grained monzonitic granite is (131.4±1.6) Ma. These precise dating results represent the ore-forming period of this molybdenum deposit, the main dominant geological events and suggest its close relationship with buried Yanshan fine-grained monzonitic granite.

文章通过采集WZK1钻孔211.2~214 m细脉浸染状矿石的辉钼矿纯样，获得辉钼矿的等时线年龄为(134.1±3.3) Ma，并对比了矿区细粒二长花岗岩的锆石SHRIMP年龄(131.4±1.6) Ma，两者基本一致，表明矿床的形成主要与隐伏的燕山期细粒二长花岗岩有着密切关系。

The orthogonal experimental design was applied to investigate the effects of zirconia source Zr(NO34·5H2O, ZrOCl2·8H2O,precipitants and sulfating agent (sulfuric acid, ammonium sulfate) on the catalytic performance of the catalysts unde the most superior condition .The catalytic activity was tested in esterification of acetic acid with butanol .

在最优的条件下用正交设计法考察锆源（Zr(NO3)4·5H2O，ZrOCl2·8H2O）、沉淀剂和硫酸化试剂对催化剂性能的影响，并通过乙酸和正丁醇的酯化反应的酯化率检测所制备的SO4/ZrO2催化剂的催化效果。

By the OM and SEM observation of solidification microstructure, the interfacial reaction between TiAl alloy and Al2O3 crucible was serious, and a large number of α-Al2O3 inclusion formed in the solidification microstructure. The interfacial reaction between TiAl alloy and ZrO2 crucible occurred only on the sample surface, but the crucible was not stable at high temperature and a tack coating was formed, clinging tightly with TiAl alloy. C element in the graphite crucible changed the original solidification path of TiAl alloy, and club-shaped γ-TiAl phases formed.

通过用光学显微镜和扫描电镜对凝固组织观察发现，TiAl合金与氧化铝坩埚之间的界面反应较为严重，在凝固组织中形成了大量氧化铝夹杂；TiAl合金与氧化锆坩埚的界面反应仅发生在试样表面，但该坩埚在高温下不稳定，并在试棒表面形成一层无法剥离的粘结层；石墨坩埚中的C元素改变了原有TiAl合金的凝固路径，生成了棒状的γ-TiAl相。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。