查询词典 zircon

Most of zircon grains from lamprophyre have 206Pb/238U weighted average ages of 46.2±2.1Ma, representing the time of lamprophyre forming.

研究区辉绿玢岩锆石多数颗粒的206Pb/238U加权平均年龄为46.2±2.1Ma，代表了岩浆侵位结晶形成辉绿玢岩的年龄。

Methods Based on the analysis for the inner structural CL images of zircons, the U-Pb ages and Hf isotopes of zircons from the host granites, mafic microgranular enclaves and diorite dykes have been discussed using in situ zircon analysis of the LA-ICPMS and MC-ICPMS.

在锆石内部结构的CL图像研究基础上，用LA-ICPMS和MC-ICPMS测定锆石U-Pb年龄及Hf同位素组成，探讨寄主花岗岩、暗色闪长质包体及及围岩中闪长质脉体锆石U-Pb年代学及Hf同位素组成特征。

The Fenghuangshan pluton, which consists of granodiorite and quartz monzodiorite, is the main part of the Fenghuangshan ore field Zircon SHRIMP 206Pb/238U dating shows that the Fenghuangshan pluton formed at (144.2±2.3) Ma, belonging to the Late Jurassic era, which is in accordance with most of metallogenic plutons of the Tongling metallogenic cluster area.

凤凰山岩体为凤凰山矿田的主要组成部分，主要岩石类型为花岗闪长岩、石英二长闪长岩。根据精确锆石SHRIMP测年结果，凤凰山岩体206Pb/238U年龄为(144.2±2.3)Ma，是晚侏罗世形成的一个典型岩体，和铜陵矿集区主要成矿岩体的形成时代一致。

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。

This paper reports the zircon SHRIMP U-Pb age data for the Loufanggou metamorphic crystalline rock sheet amphibolite-leptite and biotite-bearing monzonitic quartz schist in the Xianghe area, Shangnan, Shaanxi, in the central part of the Qinling orogenic belt and discusses their geological significance.

其基底组成为广大地质学家所关注。

This paper study on the economic opacifier to replaces zircon.

本文对玻化砖乳浊剂进行研究，寻求经济、高效的乳浊剂替代锆英石。

In the detrital zircon sample FH4, which was collected from lower sandstones of the Fanghushan Formation, the oldest sedimentary strata of the Hefei Basin. HP-UHP mineral inclusions such as coesite, omphacite, phengite and melt inclusions, and other minerals like apatite, quartz, feldspar, white micas were identified by means of micro-laser Raman spectrometer and electron probe.

防虎山组的下部砂岩地层是合肥盆地最古老的中生代沉积地层，在样品FH4中选出了碎屑锆石，通过显微激光拉曼光谱、电子探针的研究发现，锆石中含有柯石英、绿辉石、多硅白云母等典型的高压－超高压矿物包裹体、熔体玻璃包裹体以及磷灰石、石英、斜长石、白云母等矿物包裹体。

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。

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。