锆石

The results of high precise zircon U-Pb isotopic ages present the orders of intrusions in Tongling region: granodiorite→pyroxene diorite-pyroxene monzodiorite→quartz diorite-quartz monzodiorite.

高质量锆石U-Pb同位素~(206)pb/~(238)U加权平均年龄结果表明铜陵地区中酸性侵入岩的成岩序列为花岗闪长岩→辉石闪长岩→石英闪长岩。

Biotite-bearing monzonitic quartz schist is parametamorphite with a zircon U-Pb age of 978±13 Ma.

黑云二长石英片岩为副变质岩，锆石U-Pb年龄(978±13) Ma。

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。

Coesite + garnet + omphacite + rutile and coesite + phengite + apatite in zircons from phengite-bearing rutile quartz eclogite.

金红石石英榴辉岩锆石中保存的典型超高压包体矿物组合为柯石英+石榴石、柯石英+石榴石+绿辉石+金红石和柯石英+多硅白云母+磷灰石。

On the basis of the large numbers of age analysis on apatite and zircon fission track, through the research on the present structural framework, mineral characteristics and depositional environment in remanet strata and comprehensive compare with its neighboring Mesozoic basins in strata, sedimentary facies and hydrocarbon source rock, this thesis systemically discussion on the uplift timing of these mountains around Yanqi basin, original appearances in Mesozoic and characteristics of evolution and later reformation and provide important theoretical basis for petroleum exploration.

本文在大量的磷灰石和锆石裂变径迹年龄分析的基础上，结合现今盆地构造格局和残留地层中岩石矿物特征及沉积环境研究以及与周邻中生代盆地地层、沉积相及烃源岩进行综合对比，系统地探讨了焉耆盆地周缘山体隆升时限、中生代原始面貌及其演化与后期改造特征，为盆地油气勘探提供重要的理论基础。

Based on a systematic petrographic and geochemical study and a zircon U-Pb SHRIMP age analysis, the authors revealed that the age of ore-hosting volcanics (XC01-1 rhyolitic tuff) is 180.4±3.5 Ma.

对西藏冈底斯带南部雄村铜金矿床的容矿火山岩和外围岩石进行了岩石学、地球化学、锆石年代学研究。

Today, Earth teems with thousands of kinds of minerals, from agates to zircons .

现在，地球上到处是各种各样的矿物，从玛瑙到锆石应有尽有。

Some spore-pollen assemblages of late Trias and the youngest zircon of 225Ma were also obtained in this type.Deriveration of the ore is from the upper crust according to the features of trace elements,zircorn U-Pb age and initial value of ~(87)Sr/~(86)Sr.It has not any charateristics of the mantle.

底辟-侵位角砾岩是本次工作新发现的，它在空间上与构造-膏溶角砾岩密切伴生，剖面上呈脉状或火焰状分布，局部呈脉状穿刺于围岩中，其胶结物中含有晚三叠世的孢粉组合，最年青锆石的年龄为225Ma，角砾岩本身是铅和锌的富矿体。

Through the age analysis on apatite and zircon fission track, there have five stages of tectonic movements, respectively occurred in late Trias, from mid-late period in early Cretaceous to late Cretaceous, Eocene, Oligocene and Miocene.

通过对盆地内磷灰石和锆石年龄分析，焉耆盆地存在5期构造运动：晚三叠世、早白垩世中晚期-晚白垩世、始新世、渐新世和中新世。

SHRIMP zircon dating suggests that Yajiangqiao trondhjemite was emplaced in 778 ± 11 Ma.

雅江桥奥长花岗岩的SHRIMP锆石U-Pb年龄测定结果为778±11 Ma 。

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。