查询词典 biotite

The studies on the compositions, origins and elastic properties of the southern Tibetan lower crust include the following 4 aspects: the petrological and geochemical festures and ages of granulitic facie rocks located in Higher Himalayas; dehydration melting experiments on the biotite-plagioclase gniess collected from Higher Himalayas at high temperature and high pressure to model the formation of the granulites; measurements of wave velocities of the lower crustal rock in situ; analysis of origin of intracrust low wave velocity layers beneath southern Tibet.

以西藏南部下地壳物质组成，成因及其弹性性质为研究目标进行了4个方面的相关研究：高喜马拉雅地区麻粒岩相岩石的岩石学，地球化学和年代学研究；麻粒岩相岩石成因的高温高压实验；原位条件下岩石的弹性波速测量；西藏高原壳内低速层的成因分析与模拟。

Combined with available data, it is comidered that the sourcerock of biotite--leptynite might be intermediate-acid volcanic material of ca.2.7 Ga, and that of migmatized leptite and quartzite might come from granitic crust older than 3.0 Ga. The iron formation was formed on the continental crust base at about 2.7 Ga, and was immediately metamorphosed for the first time.

结合已有的研究资料可以认为，黑云变粒岩的原岩来自2.7 Ga左右的中酸性火山物质，浅粒岩和石英岩的原岩来自3.0 Ga以上的花岗质地壳物质；含铁建造形成于陆壳基底之上，形成时间约2.7 Ga，并于2.5—2.7 Ga之间发生首次变质作用。

The zircon was dated by using the technique of single-zircon stepwise evaporation-deposition with a thermal ion mass spectrometry (Bernd Kober, 1986 and 1987). The zircon ages are 2.60-2.54 Ga for biotite-leptynite, 3.36-2.62 for mimatized leptite, and 3.53-3.08 Ga for quartzite from the iron formation.

用热离子质谱计双带源蒸发—沉积测定单个锆石晶体年龄的方法对弓长岭含铁建造中黑云变粒岩、混合岩化浅粒岩和石英岩中的锆石作了测定，获得了2.60—2.54 Ga，3.36—2.62 Ga和3.53—3.08 Ga等年龄数据。

The metamorphic rocks of the area consist of granulite, plagioclase-gneis, biotite leptite and various kinds of schists of granulite to amphibolite facies By reconstruction, this metamorphic series is composed of three original formations which inciude five originai rock types: intermediate-acid volcanics formation at the bottom basic-felsic bimodae volcanits formation in the middle and basic-andesitic-felsic volcanics formation at the top...

区内太古代变质岩系广泛发育，其下部为深变质的麻粒岩相地层，上部为中深变质的角闪岩相地层，后者产出红透山式铜锌矿床多处，以及张胡子沟铜矿床和大荒沟硫铁矿床等一系列块状硫化物矿床(图1)。矿石中铅同位素年令为25～26亿年，在形成时代上可以和鞍本地区鞍山群对比。

On the basis of the rock type, texture and structure and formations age of the Kuiqi miarolitic granite batholith it is devided into 4 units:1 Miarolitic biotite-feldspar granite; 2 Medium-coase-grained miorolitic alkali-granite ; 3 Porphyritic miarolitic alkali-granite ; 4 Fine-grainedmiarolitic alkali-granite .

根据魁岐杂岩体的岩石类型、结构构造、形成的时间先后等，将其划分为4个单元：(1)晶洞黑云母钾长花岗岩；(2)晶洞中粗粒碱性花岗岩；(3)晶洞斑状碱性花岗岩；(4)晶洞细粒碱性花岗岩。

The banded gneisses underlying the mine field are, as a rule, micaceous, the amount of biotite determining mainly the shades of the bands.

本矿区的带状片麻岩照例富含云母，黑云母的多少决定片麻岩条带的色调。

The main dark mineral and accessory mineral of syenogranite are biotite and sphere, with abundant mafic microgranular enclaves, a common feature of KCG, which formed in the transition stage of continental subduction and collision. In the discrimination diagrams, all samples fall into the syn-collision area.

岩石暗色矿物为黑云母，副矿物出现榍石而未见富铝矿物，富含暗色包体，与过铝质花岗岩相伴生，为较典型的 KCG岩石组合，属于由俯冲作用向大陆碰撞演化过程中构造体制转换阶段的产物，而在构造环境判别图解中均落入同碰撞花岗岩区域。

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。

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。

Based on studies of petrology, petrochemistry and REE geochemistry of the Muluozhai REE ore de- posit in Sichuan and the granite related to REE mineralization,it is known that the granite is nordmarkite in- stead of previously-considered biotite granite.

通过对四川木落寨稀土矿床及与成矿有关的花岗岩的岩石特征、岩石化学以及稀土元素地球化学研究表明，与成矿有关的岩石是英碱正长岩，而不是前人认为的黑云母花岗岩。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！