查询词典 mantle

Genetic mechanism of metamorphic peridotite in the ophiolites is partial melting of the upper mantle peridotite. Difference between two types ophiolites is dicided by degree of the partial melting.

两类蛇绿岩中变质橄榄岩的成因机制是上地幔岩部分熔融，两者之间的差异则是由部分熔融程度决定的。

Since olivine is silica-unsaturated, quartz and olivine never coexist in the same rock. Therefore, in mantle peridotite and other ultramafic rocks, primary quartz can never be found.

由于石英和非饱和SiO_2的橄榄石不能共生，因此在地幔橄榄岩和超镁铁岩中不存在原生石英。

This paper gives a brief review of the characteristics and petrogenesis of mantle peridotite in continental subduction and collision belts, and then discusses in more detail the petrogenesis of peridotites in the North Qaidam ultrahigh pressure metamorphic belt.

论述了大陆俯冲碰撞带中地幔橄榄岩的基本特征和成岩类型，并重点讨论柴北缘超高压变质带中不同性质的橄榄岩及其成因。

In respect of mineralogy and petrology as well as strontium isotope, the Pl-lherzolite exhibits some features of transition from the cumulates to the mantle peridotite.

在矿物成分、化学成分及锶同位素等力面，含长二辉橄榄岩具有介于地幔橄榄岩和堆晶岩之间的某些过渡特征。

Tyrosinase OT47 was expressed specifically in the outer epithelial cells of the middle mantle fold, suggesting that it contributes to periostracum formation and the periostracum secretion model of P. fucata is different from previous opinion.

其中，合浦珠母贝酪氨酸酶OT47的基因特异性的表达于外套膜中褶外侧上皮细胞，可能与角质层形成有关，同时表明合浦珠母贝角质层形成可能具有其独特的细胞分泌模式。

This will have important implication to petrogenesis of alkaline rocks and their relationship to gold deposits, and structure of subcontinental lithospheric mantle and geodynamics.

此项研究成果对碱性岩的成因理论及其与金矿的关系以及探索本区大陆岩圈的结构和动力学过程均具有重要意义。

The petrogenesis of both the HT and LT magmas was further complicated by contamination of crust and lithospheric mantle.

HT和LT岩浆的岩石成因又进一步为地壳和岩石圈地幔的混染作用所复杂化。

The study on the mechanism of petrogenesis of highFe magnesian magmas is important to understand the tectonic regime of magmas in depth, early evolution of crust, the heterogeneity of lower mantle and the interaction of coremantle. Meanwhile, it is also most significative for us to understand the petrogenesis of highFe magnesian rocks discovered from southern Taihang Mountains and other regions, in China.

其成因机制的研究对于理解其岩浆深部构造背景、早期壳—幔演化、下地幔组成不均一性和核幔相互作用有着重要意义；同时，对于最近在我国南太行山地区及其它地区发现的具有高铁镁特征岩石的研究具有极其重要的意义。

Keywords: Emeishan large igneous province; picrite; geochemistry; mantle plume; petrogenesis

中文关键词：峨眉山大火成岩省；苦橄岩；地球化学；地幔柱；岩石成因

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。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。