查询词典 albitite

Albitite ; hot water sedimentary rock ; petrogenesis

钠长石岩；热水沉积岩；岩石成因

Comprehensive studies show that the albitite was formed by intrusive_metasomatic activity of alkali fluids (a kind of special magma or solution).

通过野外宏观调查和室内测试分析，对这些钠长岩的产状、地质背景、岩石化学和地球化学特征进行了综合研究。

The gold-bearing albitite has a lower content of rare-earth elements and its REE patternsare flat with negative Eu-anomalies- Th...

矿物组合及铁白云石碳、氧同位素组成特征与秦岭地区热水沉积钠长石岩的基本相同。

Some other older zircons with 206Pb/238U ages of 932 to 2443Ma were brought from Precambrian basement rocks at depth by strong submarine volcanic eruption and then deposited in quartz albitite together with hydrothermal fluids.

其他较老年龄锆石是由强烈的海底火山喷发作用从深部基底物质中带出的，并与热水流体一起沉积下来，赋存在石英钠长石岩中。

Hydrothermal sedimentary albitite in the Upper Paleozoic in the South Qinling is closely related to many large-superlarge lead-zinc deposits in the south Qinling orogenic belt.

提要：热水沉积钠长石岩在南秦岭上古生界中颇具特点，与南秦岭众多的大型，超大型铅锌成矿关系密切。

Rocks of the albitite can be mainly divided into three types, viz., lumpy albitite, breccia of albitite and brecciated albitite.

提出了这些钠长岩是由深部钠质熔浆沿断裂带上侵到地壳浅部发生侵入-交代作用而形成的观点。

The Dagougu gold-bearing albitite, which is characterized by bedding and massive struc-ture, is mainly stratiform and 1enticular in shape, and also occurs as veins in the Late Proterozoicschist.

粤西大沟谷一带钢长石岩主要以层状、透镜状及脉状产于震旦系乐昌峡群变质片岩中，具块状及条带状构造，是大沟谷金矿的主要赋矿岩石。

Both the lumpy albitite and the brecciated albitite have the same Rb-Sr isochron age of 364.9±10.9 Ma, indicating that the activity of the alkali fluids occurred in Devonian.

另外，还从这些钠长岩体中首次获得全岩铷-锶等时线年龄为364.9±10.9Ma的资料。对研究整个秦岭造山带钠质流体热事件具有十分重要的意义。

In comparison with the petrography and petrochemistry of hydrothermal sedimentary albitite in the Devonian of the Qinling, combined with the fact that its Lower Paleozoic belongs to a passive continental-margin rift environment on the northern margin of the Yangtze plate,the authors think that the Lower Paleozoic albitite in question is probably of hydrothermal sedimentary origin.

通过与秦岭泥盆纪热水沉积钠长石岩的岩相学及岩石化学对比，结合本区下古生界属于扬子北缘被动陆缘裂谷环境，初步认为这里下古生界钠长石岩可能属于热水沉积成因。

Na-rich rocks include albitite ,arfvedsonite-bearing albitite dyke,arfvedsonite dyke,and arfvedsonite-bearing .

富钠岩石包括富钠长石岩、含钠闪石钠长岩脉、钠闪石岩脉及钠闪石碳酸岩脉和钠闪石化蚀变白云岩。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。