查询词典 peridotite

Estimated V〓、V〓 data from Kuandian xenoliths, combining with the observed V〓、V〓 data, imply that the composition of the uppermost mantle lithosphere within 40-50km beneath Kuandian may be composed of 50％ spinel peridotite and 50% garnet pyroxenite.

计算了不同产地深源包体的弹性波速V〓、V〓值，将宽甸地区包体波速计算值与实测地震波速资料进行对比，确定了宽甸地区上地幔岩石圈顶部的物质组成大致为50％的尖晶石橄榄岩+50％的石榴石辉石岩。

The mantle-derived peridotite inclusions with protogranular texture and porphyroclastic textures;(2) the pyroxenite inclusions with cumulate texture; and (3) the granulite and gneisses with crystalloblastic textures.

辽西的深源岩石包体也有三种结构类型：①具有原生粒状结构、残碎斑结构的幔源橄榄岩类岩石包体；②具有堆晶结构的辉石岩类包体；③具有变晶结构的麻粒岩和片麻岩类岩石包体。

In meymechite dike and phogopite-plagioclase peridotite dike, MgO content respectively is 28.86%～ 32.78% and 27.28%～ 34.99%., they belong to the ferrguinous ultrabasic rock .

玻质纯橄岩脉和金云斜长橄榄岩脉，它们的MgO含量分别为28.86％～32.78％和27.28％～34.99％，属于铁质超基性岩。

For a 1116Kg chromitite and a 384Kg mantle peridotite sample, by heavy mineral separation and picking up under a binocular microscope following productions are obtained: the UHP minerals including moissanite and over 1000 diamond grains are discovered firstly from the Kangjinla chromitite orebody Cr-11, which is far more abundant than the Luobusa district; a series of unusual mantle minerals like moissanite and a great deal of diamond grains are discovered firstly from the host rocks of chromitite orebody Cr-11, providing the foundation of discussing the chromitite origin and its relation with the host rocks; besides the UHP minerals like moissanite and diamond, various special mantle minerals are revealed from the chromitite orebody Cr-11 and its host rocks including some native elements, alloys, oxides, sulphides, silicates, carbonates, and tungstates.

2人工重砂发现铬铁矿和地幔橄榄岩中的金刚石等特殊地幔矿物。1116 Kg铬铁矿和384Kg地幔橄榄岩大样经人工重砂分选和双目显微镜下挑选矿物，取得如下成果：首次在康金拉11号铬铁矿体中发现了上千粒金刚石，以及碳硅石等强还原环境的超高压矿物，数量远远超过在罗布莎铬铁矿矿区中发现的金刚石；首次在康金拉11号铬铁矿矿体的近矿围岩中发现了大量金刚石和碳硅石等一批异常地幔矿物，为探讨铬铁矿的成因及与近矿围岩地幔橄榄岩的关系奠定了基础；除挑选出金刚石和碳硅石等超高压矿物，在康金拉11号铬铁矿矿体与围岩地幔橄榄岩中还发现了自然铁球、金属互化物、氧化物、硫化物、硅酸盐等一批异常地幔矿物。

In four-facies peridotite, clinopyroxene contains abundant information concerning partial melting and mantle metasomatism due to its low melting point.

在无水&干&体系的四矿物相橄榄岩中，单斜辉石由于熔点低而通常记录着丰富的部分熔融作用和地幔交代作用信息。

According to the phase relationship in the reaction system felsic melt＋ small amount of peridotite, we suggest that assimilation of the mantle clinopyroxene ＋ olivine ＋ spinel as well as the fractional crystallization of sodic amphibole and clinopyroxene is an important process which modifies the composition of adakites and cause the Na depletion in adakites..

根据长英质熔体与橄榄岩反应体系的相关系，我们认为，地幔单斜辉石、橄榄石、尖晶石的混染作用以及钠质角闪石和斜方辉石的分离结晶作用，是改变埃达克熔体组成并导致其Na亏损的一个重要的过程。

The metasomatism resulted in decreasing content of orthopyroxene, increasing contents of clinopyroxene and olivine in peridotite, and the transformation from harzburgites to wehrlites.

这种交代导致橄榄岩中斜方辉石逐渐减少，单斜辉石和橄榄石逐渐增加，从而使方辉橄榄岩渐变成易剥橄榄岩。

By high-content of Al and Ca and compositionally consistent with abyssal peridotites. P-T estimates suggest that this peridotite body is a

幔橄榄岩的橄榄石一致，第二世代橄榄石（Ol2）Fo 值高达94 ～97，其内部含有细小的流体包裹体，是第一世代橄榄石蛇纹石

The Middle Proterozoic Caiziyuan peridotite was formed in the epicontinental basin at the ocean-land boundary or within-continent rift basin. Its mantle source could be metasomatized by the dehydration fluid of subducted plate, and much initial radioactive 〓Nd was added to the source.

中元古代菜子园橄榄岩形成于洋陆交界的陆缘盆地或与大洋相连的陆内裂陷盆地，其源区可能受到俯冲板块脱水流体的交代作用，有大量初始放射性〓Nd加入。

The chromite deposits in the Muskox Complex occur only in feldspathic peridotite.

在穆斯科克斯杂岩体中，铬铁矿矿层仅产于长石质橄榄岩中。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。