助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   the mantle 在 矿业工程 分类中 的翻译结果: 查询用时:0.051秒
图标索引 在分类学科中查询
所有学科
矿业工程
地质学
地球物理学
天文学
更多类别查询

图标索引 历史查询
 

the mantle
相关语句
  地幔
    The Native Iron and Wustite Assemblage: Records of Oxygen Element from the Mantle
    记录地幔中存在氧元素的自然铁-方铁矿组合
短句来源
    Mineralogical Deduction of Characteristics of the Mantle Beneath North Hetian Area
    和田地区北部地幔特征的矿物学反演
短句来源
    The Ar-He analytical results show that 3He/4He ratios of fluid inclusions in pyrite are 1.05~3.17R/Ra, 100 times higher than that of the crust and markedly lower than that of the mantle.
    黄铁矿流体包裹体的3He/4He比值为1.05~3.17R/Ra,高于地壳的3He/4He 比值100 余倍,但明显低于地幔流体的3He/4H e比值;
短句来源
    Thefrequent volcanic - intrusive activities implied the crust - mantle differentiation, multiple pouring of the mantle material and mutiple circulation of the crustal material, especially the tensionalstress environment reflected by 3 bimodal volcanic activities since Carboniferous(C1, J1, K1 ) created a multi - element and highly abundant geochemical field.
    频繁的火山一侵入活动揭示了壳幔分离、地幔物质多次注入、地壳物质多次循环,特别是石炭纪以来(C1、J1、K1)三次双峰式火山活动所反映的位张环境,造就了本区成矿元素多、丰度高的地球化学场和构造应力环境;
短句来源
    The study of H, O, S, Pb isotopes indicates that the fluid from the mantle has two functions: 1) impelling the gold active in the deep paleostrata and forming the crustal and mantle magma;
    H、O、S、Pb同位素研究表明 ,来源于地幔的流体有以下两方面的作用 :1 )促使下部古老岩石中金的活化及壳、幔源岩浆的形成 ;
短句来源
更多       
  “the mantle”译为未确定词的双语例句
    A Study on Cr and Ni Deposits in Si-O System from the Mantle
    幔源Si—O系统铬和镍的矿床学研究
短句来源
    It is concluded that the age of the Daping gold deposit is about 50Ma±(Himalayan period), and the mineralizers such as sulfur and carbon dioxides are derived mainly from the mantle.
    研究结果表明 ,大坪金矿的成矿时代约为 50 Ma(喜山早期 ) ,金成矿所需的矿化剂主要来自深部。
短句来源
    The W contents of the mantle derived rocks from eastern China is in the ranges of 0.1~1.0 μg/g (averaging 0.4 μg/g) and 0.1~2.5 μg/g (averaging 0.7 μg/g) in the mantle derived xenoliths and the host basalts, respectively.
    结果表明,地幔岩包体和寄主玄武岩中的钨含量分别在0.1~1.0μg/g和0.1~2.5μg/g之间。
短句来源
    ③the estimated S,H,O and C isotopic values indicate that gold bearing fluids mainly came from the mantle fluids.
    ③S、H、O、C等同位素测定值表明 ,含金流体主要来自幔源
短句来源
    2. the mantle distances of all known 57 large scale deposits are less than or equal to 20 km, among these deposits, 94.7% deposits have mantle distances of less than or equal to 16 km, and mantle angles of less than or equal to 1°;
    云南迄今57个大型矿床的幔距≤20km,其中94·7%≤16km,幔角≤1°;
短句来源
更多       
查询“the mantle”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  the mantle
The mantle upwelling originates from the core-mantle boundary and mostly occurs in the middle mantle and the lower part of the upper mantle.
      
The mantle flow has an effect on controlling the movement of plates and the distributions of ocean ridges, subduction zones and collision zones.
      
The mantle upwelling regions are clearly related with the locations of hotspots on the earth's surface.
      
As the volcanism prograded to the northwest, the depth of fault penetration into the mantle changed.
      
In Peter the Great Bay, Sea of Japan, this species repeatedly reproduces during the entire spring-autumn period; externae with developing embryos in the mantle cavity occur from May to September, and planktonic larvae occur from June to October.
      
更多          


Two mantle sharp gradient belts of the east and the west control the distribution of rock gold deposit in China, especially,mantle slope area of Qinlin section combined by them each other is still developmental region of rock gold deposit.Gold metallization is very in.tensive in the east upwarpet district of mantle plate.South China can compare favourably with very hopelul in South China. The centre mantle plate district is very main distributional location of gold ore deposit of micrograined...

Two mantle sharp gradient belts of the east and the west control the distribution of rock gold deposit in China, especially,mantle slope area of Qinlin section combined by them each other is still developmental region of rock gold deposit.Gold metallization is very in.tensive in the east upwarpet district of mantle plate.South China can compare favourably with very hopelul in South China. The centre mantle plate district is very main distributional location of gold ore deposit of micrograined desseminated type.The relationship between mantle depression and rock gold deposit is secondary.Tianshan mantle trough and Dunhua mantle depression have distributed more rock gold deposits among mantle depressions.The mantle uplift for oneself and distribution of rock gold deposit are not closely related,but rock gold deposits are developmental round mantle uplift, for example,the distributions of many rock gold deposits have been reflected this con.dition round mantle uplift of Sichuan basin and Zhungaer.

我国东、西两条地幔陡坡带明显地控制着岩金矿分布,特别是它们相互联结的秦岭段的幔坡域,更是岩金矿发育地区,东部地幔台坪隆起区金成矿作用强烈,在金成矿上,华南地区与华北地区可相互媲美,故在华南找岩金矿是极有前景的。中部地幔台坪区是我国微细浸染型金矿最主要的分布地区。幔坳与岩金矿分布的关系次之,以天山幔槽和敦化幔坳的岩金矿分布较多。幔隆本身与岩金矿分布的关系不密切,但其周边地区岩金矿却发育,如四川盆地幔隆和准噶尔幔脊周边的金矿分布多即是反映。

The Bayan Obo Fe-Nb-REE deposit,Inner Mongolia,China is the largest REE deposit in the world.Many research works on this deposit have been made and vast amount of scientific data have been accumulated.However,the genesis, especially the ore-forming age and REE sources, have been under dispute for a long time.21 samples were collected to determine the Sm-Nd isotopic compositions,of which 13 whole-ore samples from the Main ore body and the East ore body,3 whole-rock samples from the carbonatitic vein that cuts...

The Bayan Obo Fe-Nb-REE deposit,Inner Mongolia,China is the largest REE deposit in the world.Many research works on this deposit have been made and vast amount of scientific data have been accumulated.However,the genesis, especially the ore-forming age and REE sources, have been under dispute for a long time.21 samples were collected to determine the Sm-Nd isotopic compositions,of which 13 whole-ore samples from the Main ore body and the East ore body,3 whole-rock samples from the carbonatitic vein that cuts the quartzcoe strata in the north part of the mine region and 5 mineral samples from the late vein in the ore bodies. Three Sm-Nd isochrons were obtained on the basis of the isotopic analytical results. The whole-ore samples of the ores present a Sm-Nd isochron age of 1 286±91(2σ) Ma.With I_Nd=0.51098±4(2σ),ε_Nd(t)=-0.06±0.78,model age t_DM=1671±61(σ)Ma. The carbonatitic vein samples give an isochron age of 1223±65(2σ)Ma,with I_Nd=0.51093±35(2σ),ε_Nd(t)=-2.63±0.68,and it is in good agreement with a reported  ̄(40) Ar/ ̄(39) Ar age of 1260Ma for riebeckite in the fenite vein that cuts quartzose strata,The Sm-Nd isotopic analytical results for the 5 mineral samples yield an isochron age of 422±18(2σ)Ma,with I_Nd=0.511263±13(2σ),corresponding to ε_Nd(t)=-16.3±0.2. The values of ε_Nd(t)indicate that the REE or ore-forming materials in the deposit have most prob-ably been derived from the mantle and the age data suggest that the ore-forming process chiefly took place in the Middly Proterozoic, the age of 422Ma indicates alteration or metamorphism of the ore in the Calednian time.

白云鄂博铁铌稀土矿床的形成年龄是一个争论的问题。采自该矿床主、东矿的13个稀土矿石样品和5个明显为后期形成的脉体矿物样品被进行Sm-Nd同位素分析。对矿区北部侵入地层中的碳酸岩脉也做了工作。由矿石样品得出的Sm-Nd等时年龄为1286±91(2σ)Ma,I_Nd=0.51089±4(2σ),ε_Nd(t)=-0.06±0.78。脉体矿物样品给出的等时年龄为422±18(2σ)Ma,I_Nd=0.511263±13(2σ),ε_Nd(t)=-16.3±0.2。采自矿区北部碳酸岩的等时年龄为1223±65(2σ)Ma,I_Nd=0.510926±35(2σ)Ma,ε_Nd(t)=-2.63±0.68。其值与岩脉蚀变岩霓长岩中钠闪石 ̄(40)Ar/ ̄(30)Ar年龄十分一致。基于以上年龄和同位素数据及其它已获得的地质、地球化学资料,我们认为白云鄂博矿床稀土矿化时间应是中元古代,而不是早古生代。在422Ma左右期间该矿床受到明显改造。矿床稀土物质来自于地幔。

The application of the Re-Os system into the typical magmatic ore deposits hasindicated the complex ore-forming sources for this type of deposits which used to be con-sidered to have been solelv derived from the mantle, The analvtical results from importantdeposits such as Bushveld,Sudbury,Noril'sk imply that they have a considerable portionof the crustal materials.The crustal materials may be incorporated into these deposits ei-ther by mixing/assimilation or hydrothermal processes.

近几年以来,由于铼-锇同位素体系逐渐应用于基性-超基性岩有关的岩浆型矿床中,对这类矿床的成矿物质来源有了更为深刻的认识。许多过去被认为是由幔源物质形成的岩浆型矿床(例如Bushveld、Sudbury等),其实地壳物质占有相当大的比例。同时,由于铼-锇同位素体系揭示了源于地壳之放射性成因锇的存在,新的成矿观点也就应运而生。例如,一些学者用热液成矿作用来解释Bushveld矿床中地壳成因的锇同位素特征;陨石撞击成因被再次用来解释Sudbury的成因,因为陨石撞击能有效提供形成Sudbury复式岩体所必须的地壳物质(地壳物质所占比例大于60%)。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关the mantle的内容
在知识搜索中查有关the mantle的内容
在数字搜索中查有关the mantle的内容
在概念知识元中查有关the mantle的内容
在学术趋势中查有关the mantle的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社