锆石

For example, alkaline elements can affect diffusion velocity of Zr, Si and O ions although these alkaline elements cannot exist in crystal structure of zircon. However, K rich media and Na rich media exert different effects on the growth of crystal form: in the K rich media, growth speed of prism faces in the vertical direction is much higher than that of pyramid faces, and {111} growth speed in the vertical direction is higher than {311},which decides the formation of bipyramids dominated by {311} pyramids; in the Na rich media, both prism and pyramid grow to a certain extent, but the former is smaller than the latter.{100} growth speed in the vertical direction is lower than {110}, while {111} growth velocity in the vertical diredtion is lower than that of {311},resulting in the growth of the crystal form characterized by {100} short prism and {111} pyramid.

例如，尽管碱性元素并不进入锆石晶格，但它们可以影响Zr、Si、O离子的扩散速度，但是富钾和富钠的介质对锆石晶形发育的影响是有差别的，表现为：在富钾的介质中，将导致柱面的法向生长速度较锥面快得多，而锥面中，｛111｝的法向生长又较｛311｝快，由此决定了形成以｛311｝锥为主的双锥状晶体；在富钠的介质中，柱面和锥面都有一定程度的发育，但前者弱于后者，而柱面中，｛100｝的法向生长较｛110｝慢，由此决定了形成以｛100｝柱和｛111｝锥为主的短柱锥状晶体。

Zircons were picked out from diabases in The Luobusa ophiolite, whose ~(206)Pb/~(238)U apparent ages SHRIMP U-Pb dating show very complex , but a majority of which distribute between the 148.3Ma and 174.2Ma.

罗布莎蛇绿岩辉绿岩中的锆石SHRIMP U-Pb ~(206)pb/~(238)U表观年龄呈现复杂的分布格局，主体年龄在148.3～174.2Ma范围之内，获得高精度的锆石谐和年龄为162.9±2.8Ma，即罗布莎蛇绿岩的形成年龄。

Characteristics of zircons revealed by cathodeluminescence images from rutile ores with different colors are incredible similar.

从红色和黑色金红石矿中的锆石阴极发光图像来分析，尽管上述三个样品的矿物组合、金红石的颜色、产状及形成P—T条件有所不同，但其中锆石的特征及年龄结果却有惊人的相似，甚至完全相同。

Combined with previous studies, we suggest that the 1100-2200 Ma zircons perhaps originate from the China North Craton, while the zircons of 520 Ma may stem from Jiamusi massif.

根据目前有关年代学研究成果，推断1100~2200 Ma碎屑锆石可能来源于华北克拉通，而样品中的520 Ma的碎屑锆石则可能来源于佳木斯地块。

Based on the interior structure of zircons from the ore-bearing Longwang gabrro intrusion and the results of CL analysis, the authors performed in-situ zircon U-Pb dating by means of LA-ICP-MS and, as a result, obtained reliable age data.

文章在运用阴极发光技术对锆石晶体结构研究的基础上，利用LA-ICP-MS锆石原位定年方法，对含矿的龙王辉长岩体进行了年龄测定。

Therefore, the formation of the first episode of metamorphic zircons is correlated with fluid activity during the progressive high-pressure eclogite-faeies metamorphism.

年龄为240.9 4.8～245.1 3.1Ma的变质锆石的生长对应于板块俯冲过程中高压榴辉岩相变质作用期间的流体活动，而223.7 4.2-226.0 3.9Ma的变质锆石的生长可能对应了板块折返早期的流体活动。

The paper deal with synthesis of zirconolite based synroc.

研究了固相反应法和液相反应法合成钙钛锆石的工艺条件，获得了合成富钙钛锆石较佳的工艺条件。

SHRIMP U-Pb concordia ages of the cores of rounded zircons are 620 and 219 Ma, suggesting that the parental magma for the quartz diorite porphyry may have been derived from partial melting of basement materials of the South China block that had been modified by ultrahigh-pressure metamorphism.

具有细微震荡环带岩浆锆石的SHRIMP U-Pb年龄(117.7±1.6 Ma)显示该石英闪长斑岩体的形成时间为早白垩世；浑圆状锆石核部SHRIMP U-Pb谐和年龄为620 Ma和219 Ma，这表明该石英闪长斑岩的母岩浆可能起源于经历了超高压变质作用改造的华南地块基底物质的部分熔融。

The 207Pb/206Pb age (593Ma) of single zircon of quartz-syenite porphyry reflects that the intrusion of subvolcanics is accompanied by capture of paleo-zircon of the basement rocks, implying that the Precambrian continental basement possibly exists below Aqishan-Yamansu volcanic island arc.

而石英正长斑岩单颗粒锆石207Pb/206Pb年龄值(593Ma)反映了岩体侵位过程中捕获了基底岩石中古锆石的年龄信息。进一步推测在阿齐山－雅满苏火山岛弧之下可能存在前寒武纪陆壳基底。

It is concluded that the ~(176)Hf/~(177)Hf ratios of 91500, Temora and We-1 were homogeneous, because the aforementioned Hf isotopic results consist of at least seven separated performances of aliquots for each zircon sample. These results have significant implications for zircon Hf isotopic determination by using LA-MC-ICPMS.

上述每个结果包括至少7组独立的锆石样晶的溶解、分离和测定，表明标准样91500、Temora和We-1是Hf同位素组成均一的，可作为LAM-MC-ICPMS(激光剥蚀多接受器电感耦合等离子体质谱)的原位微区锆石~(176)Hf／~(177)Hf比值分析过程中外部校正及监控标准样。

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。