查询词典 magma

And positive anomaly of Rb,Ba,Sr,etc. The granite emplaced by underplating of granitic magma,which formed through partial melting of sedimentary mainly of arenite,and is typical crust source petrogenesis.

岩体是以杂砂岩成分为主的沉积岩部分熔融形成的花岗质岩浆上升侵位过程中形成的，是一种典型的壳源成因类型。

Statistic analyses of accurate chronological and geochemical data of igneous rocks show that the chronological frames of large-scale late Mesozoic magmatism in the Dabie Mountain and middle-lower Yangtze River belt are the same, with different character of magma and petrogenesis.

年代学资料和地球化学指标的统计表明，长江中下游成矿带与大别山地区晚中生代岩浆活动在时间上是同步的，但二者岩浆性质和成因机制不同。

In this paper, though the field geological investigations, and studies of element-isotope geochemistry, mineralogy and the geo-chronology, combining with the regional geotectonic analysis, the geochemical characteristics and petrogenesis of the mafic dikes from the coastal areas of Guangdong Province and Hainan Island are discussed, mafic magma episodes and mantle characteristics are analyzed, and the relationships between mafic magmatism and lithosphere evolution are studied.

本论文通过野外地质调查和一系列配套的岩石化学、微量元素、同位素地球化学、矿物学及年代学方法，结合区域地质构造分析，对广东沿海地区及海南岛基性岩脉的地球化学特征、成因、基性岩浆活动期次、地幔源区地球化学特征，以及岩石圈结构特征、形成机理和演化等进行了探索性的研究，得出以下几点认识： 1。

One of the main purposes of igneous rocks petrography is to get an entire classification of magma and igneous rocks system.

火成岩岩类学研究的主要目的之一在于获得岩浆/火成岩系统的一套完整的分类清单。

The pillow lava was formed as a result of condensation of magma in lake, when it effused again during the intermittent of volcanic activity in the second subcycle.

其是在第二亚旋回火山活动间歇期，岩浆再次溢出，涌流进水体里冷凝而成为陆相环境产物，与海相玄武质枕状熔岩明显不同。

It reveals that leucogranitic magma activity at least lasts to Pliocene Epoch in central segment of Higher Himalayan crust.

在聂拉木地区获得了6.23Ma浅色体形成年龄(这是目前在高喜马拉雅中段获得的最年轻的花岗岩浆活动的年龄资料)，标志着该地区的岩浆活动至少持续到上新世。

The PGE distributive patterns are the PtPd type, the Pt/Pd ratios of 0.32-0.68 are between the values of enriched sulfide tholeiite (0.38) and primitive upper mantle (1.36), and the similarity of partition patterns of chondritenormalized REE, MORB-normalized trace element and primitive mantle normalized PGE for the rocks of the three phase zones, indicate the Baimazhai intrusive body I formed by the evolution, liquation, intrusion and diagenesismetallogenesis of basaltic magma.

铂族元素配分模式为Pt-Pd型，w/w比值为0.32~0.68，介于富硫化物拉斑玄武岩(0.38)和原始上地幔(1.36)之间，以及稀土元素配分模式、微量元素蛛网图和铂族元素配分模式中不同岩石配分曲线的相似性揭示3个相带不同岩石之间的高度一致性，展示基性-超基性岩形成于玄武质岩浆演化、熔离及岩浆一次性侵入、分异成岩成矿的特征。

According to Gerard Kuiper, of the University of Chicago, the escape of gases from the moon's magma may have given the satellite a light, porous consistency, like that of a pumice stone.

芝加哥大学的Gerard Kuiper则提出，可能是月亮上岩浆气体的逃逸赋予了这颗星球轻飘多孔的硬度，就好象浮石那样。

It is suggested that the pyroxenite xenoliths were formed by the crystallization differentiation of the differentiated mantle-derived magma.

伊通新生代玄武岩中存在3种不同成因的捕虏体，其中上地幔岩浆分异结晶形成的辉石岩捕虏体中尖晶石具有独特的成分分带。

This paper reports the investigation on the petrology of spinel harzburgite and olivine pyroxenite in the Darbut ophiolitic mélange, as well as the worm-like intergrowth texture composed of Cr-spinel and orthopyroxene wide-spreading in harzburgite. Our study shows that the observed intergrowth texture is not a graphic texture or a symplectite as assumed by previous research, instead, it is a product of the evolution of the Cr-rich magma formed after the melting of the primitive mantle.

通过研究西准噶尔达拉布特蛇绿混杂岩中方辉橄榄岩和橄榄辉石岩的岩石学特征，分析方辉橄榄岩广泛发育的铬尖晶石和斜方辉石构成的蠕虫状共生连晶结构的成因，得出结论认为：这种共生连晶结构不是前人所认为的文象结构或者石榴石的后成合晶，而是原始地幔岩熔融形成富铬岩浆的演化产物。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。