查询词典 zircons

The zircon grains separated from the syenogranite sample in the Chahayan pluton show generally euhedral form with fine oscillatory zoning on their CL images, and high Th/U ratios (0.32-1.12), which exhibit the features of magmatic zircons.

岩体中锆石呈自形晶，发育细微振荡生长环带，显示高的Th/U值(0.32~1.12)，表明锆石的岩浆成因。

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。

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。

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

现在，地球上有成千上万种的矿物质，从玛瑙到诰石。

Step-wise evaporation 207Pb-206Pb dating has been conducted for uni-genetic magmatic zircons from quartzofeldspathic gneiss and pegmatite, respectively, from Guandi complex, sporadically outcropped around Fangshan pluton in Zhoukoudian area, western Hills of Beijing.

北京西山周口店地区房山岩体周围关坻杂岩的长英片麻岩和伟晶岩脉具有类似简单岩浆结晶成因锆石的蒸发法Pb-Pb年龄。

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

今天，地球充满从玛瑙到锆石等成千上万种矿物。

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。

The youngest ages of zircons in Liaoning lavas, 157-125Ma, represent the best estimate of the age of the delamination.

火山岩中最年轻的锆石年龄限定了下地壳的拆沉作用可能发生157—125Ma之间。

Or perhaps diamonds were incorporated into zircons over and over again through some unknown process, in the same place, at different times in history.

或者钻石在某些我们所不了解的方式下，一次又一次地与锆石结合在一起，在同一地点，出现在历史的不同时期。

Although diamonds are harder than zircons, they are quite young in comparison: a mere 3.3 billion years old.

虽然要比锆钻石，他们是相当年轻的比较：只有33.00亿岁。

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。