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mantle fluid
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  地幔流体
     The compositions of the inclusions are mainly CO2 and less CH4,CO2,H2S,H2O,N2,H2 and rich in alkaline(Na2O+K2O),and may represent composition of mantle fluid.
     CO2包裹体流体成分是以CO2为主,有CH4、CO、H2S、H2O、N2、和H2等次要组分,代表地幔流体成分。
短句来源
     The principal volatile species of the mantle fluid are CO 2 H 2O under mildly reduced conditions, whereas it may be chiefly constituted of CH 4 H 2O H 2 at vary reduced environment.
     地幔挥发分在弱还原条件下主要为CO2-H2O,强还原环境则以CH4-H2O-H2为主。 地幔流体地球化学的重要性质为:(1)易溶于硅酸盐熔体;
短句来源
     The mineral crystalline age(116.0 Ma) of the mantle fluid metasomatism and the age(51.2 Ma) of the silicon-rich mineralizing fluid suggest that the mantle fluid had been active through the whole processe of the alkalic magma diagenism and associated mineralization.
     据此,从地幔流体交代矿物的结晶年龄(116.0 Ma)到富硅成矿流体年龄(51.2 Ma),揭示地幔流体作用贯穿于富碱岩浆成岩成矿的全过程。
短句来源
     The mantle fluid resulted in the concentrations of Si,Al,Na,K,Si-incompatible elements and ore elements,and the transition of Sr-Nd(isotopic) geochemistry from depleted mantle to enriched mantle,and the high temperature mineralization in the porphyry and the low temperature mineralization in the country rocks.
     正是这一地幔流体作用过程,导致Si、Al、Na、K及其它硅不相容元素和成矿元素富集,进而导致其Sr-Nd同位素特征由亏损地幔向富集地幔过渡,并引起从岩体→围岩对应、从高温→低温的系列成矿效应。
短句来源
     The basic-factor affecting the conent of mantle fluids is oxygen fugacity which is highly related to tectonic setting. Major components of mantle fluid are CO2 and H2O.
     与构造环境密切相关的氧逸度是控制地幔流体成分的最根本因素CO2和H2O为大多数地幔流体的主要成分。
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  地幔流体的
     A set of volcanic rock association rich in alkaline is formed. Their Nd and Sr isotopic characteristics show that the acidic volcanic rocks have high ε Sr (T) and low ε Nd (T) values, the initial ratio (N 87 Sr/N 86 Sr) 0 ranges from 0.710 20 to 0.710 50, upper crust end members are between 67%~50% and the rock is originated from deep crust with some mantle fluid.
     Nd,Sr同位素特征显示 ,酸性岩石具有较高的 εSr(T)值与较低的 εNd(T)值 ,其 N87Sr/ N86Sr初始比值为 0 .710 2 0与 0 .710 5 0 ,上壳端员组分介于6 7%~ 5 0 %之间 ,表明其源区处于地壳中较深的位置 ,且有地幔流体的加入。
短句来源
     Apply the Net-Work Theory to Study the Mechanism of Mantle Fluid's Formation
     应用网络理论研究地幔流体的形成机制
短句来源
     The basic-factor affecting the conent of mantle fluids is oxygen fugacity which is highly related to tectonic setting. Major components of mantle fluid are CO2 and H2O.
     与构造环境密切相关的氧逸度是控制地幔流体成分的最根本因素CO2和H2O为大多数地幔流体的主要成分。
短句来源
     (5)The composition,property and evolutionary of mantle fluid dealt with that in the global extent during geological time;
     (5)在全球范围内探讨地质历史时期地幔流体的组成、性质、运移及演化规律 ;
短句来源
     Based on the finite element method,considering interactional multi-physics fields and the nonlinear characteristics such as the Non-Newtonian state of mantle fluid,this paper analyzed crust-mantle interaction,calculated several phenomena in geoscience,and analyzed the transformation which occured after a period of time.
     利用有限元法进行地壳与地幔液固耦合分析,考虑多物理场的相互影响以及地幔流体的非牛顿特性等多种非线性特征,有效地模拟计算了多种地学现象,并对一段时间历程的变化进行预测分析.
短句来源
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  幔源流体
     The fluid inclusion compositions of the samples from Bunan gold mine show that the ore-forming fluid is the mixture of magmatic water containing mantle fluid partially and meteoric water.
     金岭金矿埠南矿区成矿流体成分特征显示流体为有幔源流体参与的岩浆水与大气水的混合流体。
短句来源
     Based on the monitored helium content and its corresponding isotopic data in the samples,helium origins were reconstructed with contributions of 2.68%~4.58% from mantle. The existences of mantle helium suggest that mantle fluid intrusion into the formation through cracks or faults during crust subduction-retraction process.
     通过对所收集的三个气体样品的氦同位素分析,并对数据进行解析,得到的幔源氦在异常气体中的比例为2.68%~4.58%,说明该岩层中曾有少量幔源流体混入。
短句来源
  “mantle fluid”译为未确定词的双语例句
     The REE patterns of orebody III and the country rocks close to orebody III are essentially consistent,showing negative Eu anomailes(δEu=0.52~0.83),while orebody IV and the country rocks close to orebody IV show positive Eu anomailes(δEu=1.03~14.70). The reason may be owed to the hydrothermal alteration by the intrusion of mantle fluid.
     矿石和围岩的稀土元素的研究结果表明,Ⅲ号矿体和近Ⅲ号矿体围岩及边坡围岩的稀土元素分配曲线基本一致,均表现为铕负异常(δEu=0.52~0.83),而Ⅳ号块状矿体及近Ⅳ号矿体围岩表现为铕正异常(δEu=1.03~14.70),可能是受到地幔热液的影响而热液蚀变改造引起的.
短句来源
     The constituents of deep mantle fluid revealed by fluid inclusions in diamonds are 16.87%, 47.47%, 30.90%, 3.02% and 5.38% of C, H, O, S, N, respectively, which is richer in H and poorer in O compared with atmosphere and hydrosphere. The deep mantle fluids are one of the sources of fluids participating in the shallow geological processes, and are of close relationship with earth evolution.
     华北地台由金刚石流体包裹体所反映的深部地幔组成C、H、O、S和N分别为16.87%、47.47%、30.90%、3.02%和5.38%(皆为原子百分比),与现代大气圈、水圈相比明显富H贫O。
短句来源
     (2)The variance of the compositions of the inclusions reflects the heterogeneity of the mantle fluid sources and the metasomatism of the mantle;
     (2)地幔岩包裹体成分的不均一性反映了其源区的不均一性和地幔的交代作用;
短句来源
     STUDY OF IMPURE COMPONENTS IN DIAMOND AND MANTLE FLUID
     金刚石的不纯净组分与地幔流体的研究
短句来源
     Granites belong to S-type granite, but the biotite granite was affected by the mantle or mantle fluid.
     黑云母花岗岩是壳源花岗岩但又受到幔源岩浆或幔源流体的影响。
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  mantle fluid
In response to low environmental salinity, all three species closed the opercular plates firmly and rapidly used up oxygen within the mantle fluid.
      
Ventilation of the mantle cavity depended partially on external water flow, with higher and more stable mantle fluid oxygen concentrations being sustained when the water around barnacles was agitated.
      
Mantle fluid oxygen concentrations were extremely variable; behaviour and oxygen concentrations were not closely coupled.
      
When isolated, the mussels maintain a high osmotic concentration in the mantle fluid as the external salinity drops.
      
We also observed that both 3H-protein and 3H-glycine concentrations were higher in the mantle fluid than in the external sea water, although the ratios of 3H-glycine to 3H-protein in these two fluids were not different.
      
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This paper outlines the advances of ore geology seen from 29th International Geological Congress, with an emphasis on the development of seafloor hydrothermal mineralization, epithermal gold deposit and new model of Kuroko-type deposit. A brief review is also given to the ore-forming fluid, metallogenic theory, mineralized experiment, ore-forming environment and evolution, and new methods of exploration for concealed deposit. Much attention is now paid to the studies of mantle fluid and regional metallogeny....

This paper outlines the advances of ore geology seen from 29th International Geological Congress, with an emphasis on the development of seafloor hydrothermal mineralization, epithermal gold deposit and new model of Kuroko-type deposit. A brief review is also given to the ore-forming fluid, metallogenic theory, mineralized experiment, ore-forming environment and evolution, and new methods of exploration for concealed deposit. Much attention is now paid to the studies of mantle fluid and regional metallogeny. Some new basic theories, such as chemical dynamics, surface chemistry, dissipation texture, fractel geometry, non-linear thermodynamics and dynamics are beginning to be used in the studies of ore deposits. Isotopic geochemical method has been applied successfully in exploration. Significant tendencies can be identified in the studies of ore deposits in the four areas: 1. macroscopic studies, such as temporal and spatial evolution of metallogenesis in earth history and tectonic background of metallogenesis; 2. microcosmic studies; such as isotopic geochemistry, mineralized experiment and mechanism study of water-rock interaction; 3. the studies of multiple-genesis, multiple-stage and multiple-origin of mineralization; 4. the comparative studies of present and past ore-forming activities.

本文全面概括地介绍了第29届国际地质大会有关矿床地质学的进展和发展趋势,重点对海底热水成矿、浅成低温热液金矿和黑矿型矿床新模式作了详细介绍,此外也对成矿流体、矿床成因理论、矿床实验研究、矿床形成环境和演化规律,以及隐伏矿床的勘查方法等方面作了简要介绍。地幔流体研究和区域成矿学日益受到重视,一些新的基础理论,如化学动力学、表面化学、耗散结构、分形几何学以及非线性热力学和动力学等开始引用于矿床学研究。同位素地球化学方法在勘查中的应用有较明显的进展。矿床学研究的4个重要趋势是:1.向宏观发展:如地球历史中成矿作用的时空演化和成矿的大地构造背景;2.向微观深入:如同位素地球化学、成矿实验和水—岩作用机理的研究;3.成矿多来源、多成因和多阶段的研究;4.现代成矿作用与古老成矿作用的对比研究。

Upper-mantle amphiboles from China are commonly characterized by high Al(>2.0) and distinguished from one another in TiO_2 and Cr_2O_3. They are divided into two types (pargasite and kaersutite). The pargasite may be saparated into four subtypes: Cr-Ti-poor (Cr_2O_3=0.15%, TiO_2= 0.07%), Cr-rich (2.18%), Ti-rich(3.14%) and Cr-Ti-rich(Cr_2O_3=2.59%, TiO_2=3.16%). Three subtypes of pargasite(Cr-rich, Ti-rich and Cr-Ti-rich) are distributed over the main continent of China and kaersutite occurs in west Taiwan....

Upper-mantle amphiboles from China are commonly characterized by high Al(>2.0) and distinguished from one another in TiO_2 and Cr_2O_3. They are divided into two types (pargasite and kaersutite). The pargasite may be saparated into four subtypes: Cr-Ti-poor (Cr_2O_3=0.15%, TiO_2= 0.07%), Cr-rich (2.18%), Ti-rich(3.14%) and Cr-Ti-rich(Cr_2O_3=2.59%, TiO_2=3.16%). Three subtypes of pargasite(Cr-rich, Ti-rich and Cr-Ti-rich) are distributed over the main continent of China and kaersutite occurs in west Taiwan. They are all derived from various mantle peridotites, pyroxenites and their host Cenozoic basaltic rocks. Only the Cr-Ti-poor pargasite found in high-pressure metamorphic rocks in northern Jiangsu and southern Shandong. It is suggested that all the upper-mantle amphiboles from China have their own genetic characteristics directly or indirectly related with mantle fluid metasomatism regardless of their occurrences.

我国土地幔成因角闪石以高铝(一般>2.0)为特征,以TiO_2、Cr_2O_3含量差异相区别,划分为韭闪石和钛角闪石两大类。韭闪石又有四种不同的成因类型:贫铬、钛型(Cr_2O_3=0.15%,TiO_2=0.07%),富铬型(Cr_2O_3=2.18%),富钛型(TiO_2=3.14%)和富铬、钛型(Cr_2O_3=2.59%,TiO_2=3.16%)。除贫铬、钛型韭闪石发现于苏北-胶南高压变质岩石中外,其它三种韭闪石(产于大陆区)和钛角闪石(产于台湾西部)均来自各种地幔橄榄岩、辉石岩及新生代玄武岩中。不管它们的产出方式如何(填隙、嵌晶、巨晶和包裹体子矿物),都直接或间接与地幔流体的交代作用有关,但各具成因之特点。

Ultramafic xenoliths, entrained by basaltic magmas from mantle depth, contain direct evidence of mantle fluids which are of crucial importance in interpreting the mechanism of geological processes (partial melting, mantle metasomatism) in mantle depth. The results of study on the mantle-derived lherzolites from indicate that besides CO_2, there are H_2O and small amounts of CO, CH_4, SO_2, Cl and F. The initial fluids (volatiles) at mantle depth may be dissolved in...

Ultramafic xenoliths, entrained by basaltic magmas from mantle depth, contain direct evidence of mantle fluids which are of crucial importance in interpreting the mechanism of geological processes (partial melting, mantle metasomatism) in mantle depth. The results of study on the mantle-derived lherzolites from indicate that besides CO_2, there are H_2O and small amounts of CO, CH_4, SO_2, Cl and F. The initial fluids (volatiles) at mantle depth may be dissolved in high-pressure solid mineral phases of mantle peridotite, and they may be exsolved under the decompressive conditions of mantle up welling and produce the minute earliest fluid inclusions. These free fluid phases accumulate in some regions of mantle, and they result in lowering of mantle solidus (and liquidus) and may initiate decompressively partial melting in the upper mantle. The initial partial melting occurs mainly at mineral grain boundaries, the clinopyroxene is more easily undergone partial melting, and forms the spongy partial melting zones in the rims of mineral crystals. During shear flow of the mantle the initial partial melt drops might coalesce and form larger drops that begin to permeate and form a network of connected melt veins in the deforming peridotite, which is represented by the younger CO_2-magmatic inclusions and interstitial glasses. Due to shear fracturing, the melts (and fluids) pressure and fracture the overlying peridotite, creating a dykelike conduit, and flow towards a low pressure region in the mantle where a magma reservoir might form gradually. Fluids and melts are all the metasomatic agents for mantle metasomatism. Melts formed by small degrees of fluid-assisted partial melting of up-per mantlt will be highly rich in incompatible elements. Interaction between these melts, fluids and depleted mantle can bring about substantial local enrichments. When the concentration of H_2O in fluids (and melts) is lower, there occurs only the cryptic metasomatism; When the conentration of H_2O is higher, the degrees of partial melting are higher and hydrous metasomatic phases (e.g, amphibole)nucleate, and the modal metasomatism occurs.

玄武岩浆从地幔深处挟带上来的超镁铁质捕虏体含有地幔流体的直接证据,它们对于阐明地幔深部地质作用(部分熔融作用、地幔交代作用)的机制十分重要。女山幔源二辉橄榄岩的研究结果表明,初始的地幔流体除富含CO_2外,尚含有H_2O和少量CO、CH_4、SO_2、C1、F。地幔中的初始流体(挥发组分)在源部是溶解于地幔橄揽岩的高压固体矿物相中,它们在地幔上隆减压时出溶,形成细小的最早期流体包裹体。这些自由流体相在一定部应聚集,使得地幔固相线(和液相线)下降,引起上地幔发生减压部分熔融。初始的部分熔融主要发生于矿物边界,以单斜辉石最易遭受,形成矿物边缘的海绵状部分熔融带。当地幔剪切流动时,初始的部分熔融体珠滴联合成大的珠滴,并开始渗透,在变形橄榄岩中相连成脉状网络,晚期含C0_2岩浆包裹体及填隙玻璃即为其代表。由于剪裂作用,熔体(和流体)压裂开上覆橄榄岩,产生岩墙状通道,并在上地幔的某些低压区聚集成岩浆库。流体和熔体均为地幔交代作用的介质。在流体参与下,上地幔低度部分熔融产生的熔体将高度富集不相容元素。这些熔体和流体与亏损地幔间的相互作用,可以带来不相容元素重大的局部富集。当流体(和熔体)中H_2O浓度低时,仅发生隐交代作...

玄武岩浆从地幔深处挟带上来的超镁铁质捕虏体含有地幔流体的直接证据,它们对于阐明地幔深部地质作用(部分熔融作用、地幔交代作用)的机制十分重要。女山幔源二辉橄榄岩的研究结果表明,初始的地幔流体除富含CO_2外,尚含有H_2O和少量CO、CH_4、SO_2、C1、F。地幔中的初始流体(挥发组分)在源部是溶解于地幔橄揽岩的高压固体矿物相中,它们在地幔上隆减压时出溶,形成细小的最早期流体包裹体。这些自由流体相在一定部应聚集,使得地幔固相线(和液相线)下降,引起上地幔发生减压部分熔融。初始的部分熔融主要发生于矿物边界,以单斜辉石最易遭受,形成矿物边缘的海绵状部分熔融带。当地幔剪切流动时,初始的部分熔融体珠滴联合成大的珠滴,并开始渗透,在变形橄榄岩中相连成脉状网络,晚期含C0_2岩浆包裹体及填隙玻璃即为其代表。由于剪裂作用,熔体(和流体)压裂开上覆橄榄岩,产生岩墙状通道,并在上地幔的某些低压区聚集成岩浆库。流体和熔体均为地幔交代作用的介质。在流体参与下,上地幔低度部分熔融产生的熔体将高度富集不相容元素。这些熔体和流体与亏损地幔间的相互作用,可以带来不相容元素重大的局部富集。当流体(和熔体)中H_2O浓度低时,仅发生隐交代作用;当H_2O浓度较高时,部分熔融程度也较高,相应有含水相(如角闪石等)成核,出现矿物交代作用。

 
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