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gneiss complex
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  麻杂岩
     Hornblendes in amphibolites from different group complex, formation complex and gneiss complex are distinctly showing high TiO_2 and high K_2O in composition, while the FeO + MgO content are rather constant, FeO and MgO showing negative relationship.
     不同岩群、岩组和片麻杂岩中斜长角闪岩所含角闪石和斜长角闪岩一样 ,显示高TiO2和高K2 O的特点。 角闪石中FeO +MgO含量基本一致 ,而FeO和MgO含量呈负相关。
短句来源
     CHARACTERISTICS OF SHENGOU GNEISS COMPLEX OF NEOARCHEAN FROM KULUKTAG OF XINJIANG
     库鲁克塔格地区新太古代深沟片麻杂岩特征
短句来源
     The pre Sinian metamorphic series in the Micang Mountain area on the northern margin of the Yangtze Craton consist of the Houhe Group Complex, the Bajiaoshu Gneiss Complex and the Huodiya Group.
     扬子克拉通北缘米仓山地区前震旦纪变质岩系由后河岩群、八角树片麻杂岩和火地垭群组成。
短句来源
     The Shengou gneiss complex formed the innner core,while the Xingditag rock group of Paleoproterozoic fromed the slip off system and the South Xingditag rocks of Proterozoic fromed the cover ,all of them formed an integrated structure of Shengou metamorphized core complex.
     深沟片麻杂岩组成内核,古元古界兴地塔格岩群组成滑脱系,古元古界南辛格尔塔格岩组组成盖层,它们构成一个完整的深沟变质核杂岩构造。
短句来源
  “gneiss complex”译为未确定词的双语例句
     A GIGANTIC A-TYPE ANTIFORM AND ITS TECTONIC SETTING IN TONGBAI GNEISS COMPLEX, EASTERN TONGBAI OROGEN, CENTRAL CHINA
     桐柏造山带东段结晶基底杂岩中的大型A型背形及其构造背景
短句来源
     The granite gneiss complex in eastern Jiaodong peninsula can be divided into three kinds of lithologies, i.e.(1) quartz dioritic tonalitic granodioritic gneiss,(2)adamellitic granitic gneiss; and (3)leucocratic granite.
     胶东东部地区的元古宙花岗岩-片麻岩杂岩,可分为:(1)石英闪长质-英云闪长质-花岗闪长质片麻岩、(2)二长花岗质-钾长花岗质片麻岩和(3)淡色花岗岩三套岩石。
短句来源
     Amphibolite in Bayanwulashan formation complex was formed between (2?271) Ma and 2? 264 Ma. Amphibolite in Boluositanmiao gneiss complex was intruded by granitic gneiss of 1?
     巴彦乌拉山岩组中斜长角闪岩形成于 2 2 71Ma~2 2 6 4Ma。
短句来源
     The Bijigetai granodioritic gneiss complex is mainly composed of hornblende-plagioclase gneiss and biotite-plagioclase gneiss and the preliminary isotopic dating indicates that the main stage of this complex occurred in the Jinningian at 0.8-1 Ga.
     毕及格台花岗闪长质片麻岩杂岩主要由角闪斜长片麻岩、黑云斜长片麻岩等组成,初步的同位素年龄测定结果显示它们的主期形成于8 ̄10亿年的晋宁期。
短句来源
  相似匹配句对
     CHARACTERISTICS OF SHENGOU GNEISS COMPLEX OF NEOARCHEAN FROM KULUKTAG OF XINJIANG
     库鲁克塔格地区新太古代深沟片麻杂岩特征
短句来源
     Complex Numbers
     复数
短句来源
     needle complex
     毒针·针状复合物
短句来源
     Felsic gneiss is mainly represented by a plutonic granite complex of the tonalite-granodiorie-granite association.
     其中长英质片麻岩主要是英云闪长岩—花岗闪长岩—花岗岩组合的深成花岗杂岩;
短句来源
     (2) Eclogitic gneiss;
     (2)榴辉岩质片麻岩;
短句来源
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  gneiss complex
Fine grained sericite deposits occur at the interface between Archean Mewar Gneiss Complex and the Proterozoic Aravalli Supergroup independent of shearing.
      
Nappe thrusting, which also affected the South Schwarzwald Gneiss Complex, occurred in Visean time during high-temperature / low-pressure metamorphism.
      
The Rand Granite is a heterogeneous metamorphosed granitoid rock complex with numerous wallrock inclusions situated in the Moldanubian Zone at the southern margin of the Central Schwarzwald Gneiss Complex.
      
Granites, among them three generations of microline-rich granites, intruded repeatedly between 1600 and 900 Ma in the South-western Swedish Gneiss Complex.
      
3,850?Ma crust should be considered in interpreting isotope signatures of the younger (3,800-3,600?Ma) rocks of the Itsaq Gneiss Complex.
      
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The Caozhuang and Shuichang gneiss complexes on the western margin of the Qian'an granite-gneiss dome, eastern Hebei, North China, were studied from their isotopic and trace element geochemistry. The oldest rocks so far recognised in China occur near Caozhuang, south of the area.The Caozhuang gneiss complex consists of supracrustal rocks and multiphase orthogneisses. The supracrustal rocks represent a sequence of amphibolite, quartzite, felsic gneisse, marble and BIF, which are thought to be laid...

The Caozhuang and Shuichang gneiss complexes on the western margin of the Qian'an granite-gneiss dome, eastern Hebei, North China, were studied from their isotopic and trace element geochemistry. The oldest rocks so far recognised in China occur near Caozhuang, south of the area.The Caozhuang gneiss complex consists of supracrustal rocks and multiphase orthogneisses. The supracrustal rocks represent a sequence of amphibolite, quartzite, felsic gneisse, marble and BIF, which are thought to be laid down in a shallow water environment, A ca. 3.5 Ga sm-Nd isochron has been obtained for the amphibolite, and also for four felsic gneisses of the Caozhuang supracrustal rocks. The orthogncisses of the Caozhuang complex appear to have been generated in three main cycles: at ca. 3.5 Ga, ca. 2.7 Ga and ca. 2.5 Ga respectively. The earliest Huangbaiyu gneiss was broken up and contaminated by the intrusions of grano-diorites and late granitic gneisses. The granodiorites have yielded a ca. 2,7 Ga Rb-Sr isochron and relatively high ISr (= 0.7057±2(2σ)). It suggests that the granodiorites were formed by anatexis of older continental crust. Late granitic gneisses have ist U-Pb zircon age of 2.5 Ga,. and are remarkably similar in appearance and chemical composition to the Huangbaiyu gneisses. It suggests that the gneiss complex as a whole is a mixture of different types of gneisses in a wide age range.The Shuichang gneiss complex contains supracrustal rocks, granites and charnockites. The supracrustal rocks include greywackes, semi-pelites and BIF, which have been metamorphosed in to granulite facies and occur within a polyphase complex of deformed leucogranite, micro-cline granite and charnockite. The age of the supracrustal rocks is undetermined, but may be larger than charnockites of 2.65 Ga. There is a close relationship between the production of the granites and the charnockites. It is suggested that differences in mineralogical and chemical compositions of granites and charnockites could result from partial melting processes occurred in the Shuichang metasedimentary gneisses.

曹庄片麻杂岩包括35亿年的表壳岩及三个不同时期的复期正片麻岩。水厂片麻杂岩包括水厂表壳岩及侵入其中的淡花岗岩和紫苏花岗岩,后者年龄为26.5亿年。

The Fuping gneiss complex consists mainly of the grey gneisses which are interlayered with small amount of amphibolite and metavolcanic and meta sedimentary rocks. On the basis of the REE data, the Fuping grey gneisses can be divided into two types. The REE pa+-terns of the first type show less fractionation with a prominent negative Eu anomaly. The REE patterns of the second one show highly fractionation with no prominent Eu anomally. Both types could be derived from partial melting of mafic source rocks,...

The Fuping gneiss complex consists mainly of the grey gneisses which are interlayered with small amount of amphibolite and metavolcanic and meta sedimentary rocks. On the basis of the REE data, the Fuping grey gneisses can be divided into two types. The REE pa+-terns of the first type show less fractionation with a prominent negative Eu anomaly. The REE patterns of the second one show highly fractionation with no prominent Eu anomally. Both types could be derived from partial melting of mafic source rocks, but have different mineral phases in the residue. In the first case, the residue consists mainly of plagioclase; in the second case, the most mineral in the residue is amphibole. It is supposed that the latter is related to the total pressure under which the protolithic magma might be derived. At relatively low pressure the residue contains mainly plagioclase; at relatively high pressure the residue contains mainly amphibole. Thus, the protolith of the Fuping grey gneisses might be produced in the different crustal levels corresponding to different total pressures.

阜平片麻岩的主体成分为灰片麻岩,其稀土型式相似于世界各地的太古代灰片麻岩。该灰片麻岩含丰富的变基性岩包体,二者构成双峰式系列,并经历了强烈形变,变质级别达高角闪岩相。阜平灰片麻岩由基性来源部分熔融而形成。

Grey gneisses are characteristically metamorphic tonalite-trondhjemite paleo-intru-sives with Archaean feature. Now people usually take them as the product of partial melting of high-grade metamorphic basic crustal rocks (greenstone belt) with a great thickness. Some important information about ancient plate tectonics and early crustal evolution may be obtained from grey gneisses.Through ten years of study, the author concludes that there are two types of Archaean grey gneisses in North China.The first one is...

Grey gneisses are characteristically metamorphic tonalite-trondhjemite paleo-intru-sives with Archaean feature. Now people usually take them as the product of partial melting of high-grade metamorphic basic crustal rocks (greenstone belt) with a great thickness. Some important information about ancient plate tectonics and early crustal evolution may be obtained from grey gneisses.Through ten years of study, the author concludes that there are two types of Archaean grey gneisses in North China.The first one is the Zunhua type. This type of grey gneiss is interbeded with basic granulite, forming a bimodal migmatitic formation. It is characterized by complex mineral composition, highly variable REE patterns and positive anomaly of Eu. It originated from autochthonous or partly autochthonous deep-level migmatiza-tion with a relatively high degree of partial melting (30 % ±). As underplating magma, this type of grey gneiss at the root of the early high-grade metamorphic greenstone belt prevented basic rocks from subsiding.The second one is the Hengshan type, occurring as intrusives. This type of grey gneiss was emplaced after large-amplitude uplifting. It is characterized by rather simple mineral composition, very limited change of REE patterns and no anomaly of Eu. Model calculation suggests that it is a product of subduction and underthrusting of the high-grade metamorphic green belt and then melting (15%±) and emplacement. In northwest Hebei, from northeast to southwest the following tectonic units may be found. (1) Chongli high-grade metamorphic greenstone belt; (2) Dadonggou high-pressure granulite belt; (3) Hengshan grey gneiss complex belt. Thus it is reasonable to think that in the late Archaean, some evidence similar to that of the modern plate subduction zone had begun to appear in the Earth. However, owing to the high value of heat flow and small scale of convection in the Archaean, the tectonie plate was rather small, and magma that originated from the subduction zone and was marked by tonalitic magma, is obviously different from that of today.

灰色片麻岩是具太古宙特征而有构造意义的英云间长质侵入体。华北太古苗灰色片麻岩可分为两种类型:其一为遵化型。它与基性麻粒岩呈“互层”产出,形成双峰式混合岩伏建造。矿物成分复杂,稀土型式变化大,有正铕异常,属原地半原地深位混合岩化成因,熔融量大(30%±),作为早期深变质绿岩带根部的板底垫托而阻止了基性岩的沉没。其二为恒山型。有岩体形态和较大幅度的上升侵位,矿物成分简单,稀土型式变化小,常无铕异常,为深变质绿岩带俯冲下插并熔融侵位的产物,熔融量小(15%±)。本文试图通过灰色片麻岩的研究为古板块构造和早期地壳演化提供重要信息。

 
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