查询词典 mantle

This transition of the chemical texture of the upper mantle was caused by mantle metasomatism.

上地幔化学结构的这种转化主要是由地幔交代作用所造成。

This constraint on the time of mantle metasomatism implies that there occurred a precusory event of mantle metasomatism with respect to the formation of diwa regions in western Yunnan and its neighbouring region.

这一上地幔交代事件的时间制约，说明滇西及其邻区的形成曾存在一个地幔交代作用先驱事件。

Analyses of quenched nm products revealed that the nepheline was completely transformed into NaAlSiO4 with the calcium-ferrite-type structure at 23 GPa and 1500℃ In combination with previous results, the calcium-ferrite-type NaAlSiO4 can exit under the conditions of deep lower mantle and it may be the important host phase for sodium and aluminium in the deep lower mantle. With the change of temperature and pressure, the crystal parameters will change, though the ranges are limited.

结合前人的研究成果可以认为：型NaAlSiO4在地慢深部可以稳定地存在，并对Na、Al在深部的赋存具有重要意义；随着温度压力条件的变化，CaFe2O4型NaAlSiO4的晶体学参数（晶格常数、晶胞体积和计算密度）发生变化，但变化的幅度不大。

The biotite granites were not directly derived from depleted mantle, but were probably the products of partial melting and crystallization differentiation of deep-buried young crustal materials derived from the mantle.

这些黑云母花岗岩不是直接来源于亏损地幔，而更可能是源自地幔且被深埋的年轻地壳物质部分熔融和结晶分异作用的产物。

The study on the mechanism of petrogenesis of high-Fe 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 core-mantle. Meanwhile, it is also most significative for us to understand the petrogenesis of high-Fe 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。

By study of the medium-acid plutonic rock and its maric microgranular enclaves of the middle Gangdis〓 belt, this dissertation will discuss the characteristics of the Gangdis〓 medium-acid plutonie magmatism and the crust/mantle dynamics during uplifting of Tibetan Plateau from the sight of material and energy, and use'lithoprobe'to connect crust and mantle interaction and other geologic events.

中、新生代青藏高原岩浆活动强烈，沿雅鲁藏布江缝合带形成了著名的冈底斯构造—岩浆带，本篇博士论文以冈底斯带中酸性侵入岩及其中铁镁质微粒包体为研究重点，探讨冈底斯带中酸性侵入岩浆活动特征，从物质和能量的角度论述了高原隆升过程中的壳/幔动力学过程，利用"岩石探针"将壳/幔之间的相互作用和地质事件有机地结合起来。

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。

Research on ore deposit features indicates that the composition of different variety of pyrrhotite are similar to that of pyrrhotite in mantle conclusions, reflecting their mantle derivation.

矿床地质研究认为，本区不同磁黄铁矿变种与相应的地幔包体磁黄铁矿成分相近，反映出它们地幔来源的特点。

If this explanation is correct, the present lithosphere mantle in the North China block is mainly the relict after the Mesozoic lithospheric thinning, rather than the new accreted mantle.

华北岩石圈地幔的低水含量有可能是由于上升软流圈的热侵蚀造成的，因此目前的华北岩石圈地幔可能大部分都是中生代岩石圈减薄后的残余，而不是新生地幔。

The SN structure is superimposed and compounded by Paleozoic relict structure of the lithosphere and new production from the mantle or the core-mantle interface.

SN向构造是在地壳或岩石圈中被保留下来的古生代构造基础上，后期可能源于深层次甚至下地幔动力学过程的表现。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。