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tectonic differentiation
相关语句
  构造分异
     HISTORISTIC-DYNAMIC TECTONIC DIFFERENTIATION OF E-W OF CENTRAL ASIA CONTINENTAL CRUSTOBODY AND ITS SIGNIFICANCE
     亚洲大陆中部壳体东、西部历史-动力学的构造分异及其意义
短句来源
     The result of the basin's tectonic differentiation and the development of the salt-bearing strata indicate that in Palaeogene ang Neogene, the Kuqa basin had already had the tectonic environment in which the potash evaporite formed.
     从盆地的构造分异结果及其控制的含盐系和其中石盐岩的发育特征来看,古近纪和新近纪库车盆地已具备钾盐蒸发岩形成的构造条件。
短句来源
  构造分异作用
     PRESSURE SOLUTION AND ASSOCIATED TECTONIC DIFFERENTIATION IN ROCK DEFORMATION
     岩石变形中的压溶作用及相伴的构造分异作用
短句来源
  相似匹配句对
     PRESSURE SOLUTION AND ASSOCIATED TECTONIC DIFFERENTIATION IN ROCK DEFORMATION
     岩石变形中的压溶作用及相伴的构造分异作用
短句来源
     ON BIOGEOCHEMICAL DIFFERENTIATION
     论生物地球化学分异作用
短句来源
     Differentiation of Lizard
     蜥蜴临证辨析
短句来源
     Tectonic in Architecture
     论建筑中的结构造型
短句来源
     ON TECTONIC SYSTEMS
     论构造体系
短句来源
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The most important task in geological mapping in a metamorphic terranem is to recognize the types of stratified structures correctly.The author has sum- marized two types of stratified structures. 1.Blastoprimary stratified structures.This type of stratified structures is generally well preserved and can be easily recognized in low-and low-to me- dium-grade metamorphic terranes and slightly deformed sections.Of the indi- cators,the most important is blastoprimary structures(e,g.structures of psa- mite,cyclothem,bedding...

The most important task in geological mapping in a metamorphic terranem is to recognize the types of stratified structures correctly.The author has sum- marized two types of stratified structures. 1.Blastoprimary stratified structures.This type of stratified structures is generally well preserved and can be easily recognized in low-and low-to me- dium-grade metamorphic terranes and slightly deformed sections.Of the indi- cators,the most important is blastoprimary structures(e,g.structures of psa- mite,cyclothem,bedding and fumarole).These structures can sometimes be preserved in medium- to high-grade metamorphic terranes as well. 2.Secondary stratified structures.This type of stratified structures can be subdivided,in terms of genesis,into differentiation,structural transposition,and composite stratified structures. The differentiation stratified structure refers to the metamorphic tectonite belt that results in varying degrees of metamorphism and deformation of massive rocks.The layering is reflected by secondary foliation and lamellae and banded structures formed by metamorphic tectonic differentiation. The stratified structure formed by transposition of structures means the transposition of newly-formed foliation(S_n)to earlier foliation(S_(n-1))during progressive deformation in an episode of folding,which acts in two ways, that is transposition of shape and that of composition.The transposition can be classified into W-type,N-type,and I-type from weaker to stronger. The composite stratified structure is the secondary stratified structure that originates from complicatedly composed rocks by metamorphism and deformation. The blastoprimary stratified structures and those formed by transposi- tion of structures through metamorphism and deformation should be distingui- shed by their composition and textures,distribution and extension,and chara- cteristics of their boundaries.Strain indicators,fabrics and textures of minerals should be analysed synthetically as well. Recognition of the nature of the stratified structures in a metamorphic ter- rane is the most important for restoring the order of rock formations and the stratigraphical sequence.However.the requirement should be varied beca- use the transformation varies in different tectonic fields.In a strongly trans- formed terrane,as the primary stratification is basically eliminated and the layering accumulation is the result of tectonic accumulation,the approximate order of rock formatians could only be established on the basis of a full structural analysis and synthetical recognition and analysis of the order of rock formations.On the contrary,in a slightly transformed terrane the primary structures are well preserved so that it is possible to establish regional or local stratigraphical sequence.

变质岩区层状构造分为两种主要类型:变余原生层状构造和变质一变形分异形成的次生层状构造。次生层状构造按其成因又可分为:分异层状构造,构造置换层状构造及复合层状构造。正确区分不同成因,不同样式的层状构造是变质岩区重要基础工作之一,由于层状构造类型不同,不同变质杂岩区的岩层或地层序列的建立应有不同的要求。

Pressure solution is one of the most common mechanism of rock de ormation in a lowgrade metamorphic environment. This paper discussed the development of this tectonic-chemical deformation process associated with tectonic differentiation. The effects of various factors, which influence the initiation and development of the zones of dissolution and deposition, have been discussed such as the initial heterogeneity of rocks, the state of stress, the solubility of minerals, the nature of fluid, and the transfer...

Pressure solution is one of the most common mechanism of rock de ormation in a lowgrade metamorphic environment. This paper discussed the development of this tectonic-chemical deformation process associated with tectonic differentiation. The effects of various factors, which influence the initiation and development of the zones of dissolution and deposition, have been discussed such as the initial heterogeneity of rocks, the state of stress, the solubility of minerals, the nature of fluid, and the transfer cofficients and the diffusion paths of mass transfer. The influences of these factors on the tectonic differentiation layers formed during progressive deformation process by chemical differentiation have also been discussed.

压溶作用是低级变质环境中最常见的一种岩石变形作用机制。本文讨论了这种构造化学作用的渲化发展以及相伴的构造分异作用。探讨了诸如岩石的初始各向异性、应力状态、矿物的溶解度、流体的性质,以及物质扩散迁移的迁移系数、迁移通道等因素,对溶解作用带和沉淀作用带的生成与发展的影响,以及它们对在递进变形过程中由于分异作用形成的构造分异层的发展和几何特征的影响。

Tectonically,the South China area must have been attached to the world wide Grenville orogens.The subduction occurred from 1200 Ma B.P.,and the Xianggan Cathaysia Microcontinent collided with the Yangtze Microcontinent in 1000~950 Ma B.P.,followed by the lithosphere delamination and orogens' collapse in the collisional area.The rifts consist of the North Branch and the South Branch of the Huanan Rift in the overthrusting(the Yangtze)and the underthrusting(the Xianggan Cathaysia)plates respectively.The both...

Tectonically,the South China area must have been attached to the world wide Grenville orogens.The subduction occurred from 1200 Ma B.P.,and the Xianggan Cathaysia Microcontinent collided with the Yangtze Microcontinent in 1000~950 Ma B.P.,followed by the lithosphere delamination and orogens' collapse in the collisional area.The rifts consist of the North Branch and the South Branch of the Huanan Rift in the overthrusting(the Yangtze)and the underthrusting(the Xianggan Cathaysia)plates respectively.The both might be connected by some transcurrent troughs,and some impactogens stretched into the collisional plateau.The new formed oceanic crust might be created at some localities in the collapse rift,for example,the central Jiangxi and north Guangxi along the North Branch of the Huanan Rift.The island arc related basalts and granitoids might comprehend the oceanic crust appearing in the South Branch which separated the Xianggan from the Cathaysia Microcontinents,although no ophiolite has been discovered so far. A tectonic differentiation occurred in the South China area in 850~800 Ma B.P. The orogeny kept on in the southern area of the Yangtze,and the compressional stress field might result from the further extension of the Huanan Rift and the subduction of the new formed oceanic crust.The latter is evidenced by the calc-alkine volcanic rocks,the arc related granitism and the high pressure metamorphism.The molasse sedimentation ended in about 740 Ma B.P.,then the collisional plateau controlled the distribution of glacial deposits in the Chang'an ice age.The deposits of the Nantou ice age distributed much wider,indicating the collisional plateau was eroded and peneplained,followed by the sediments of marine cover in the Doushantuo Dengying stages and Cambrian.In the area of lithosphere delamination,a violent extension and rifting occurred during this period.The developing of the Huanan Rift continued to the Early Paleozoic,which was once called the Chengjiang-Caledonian geosyncline.Owing to the volcanic exhalation and hydrothermal solution supporting the metallogenic materials,the Xinyu type iron ore deposit was created in the interval period of glaciations. The Grenville orogeny created a supercontinent,the Rodinia,and the South China area must have been a part of the supercontinent.The Neoproterozoic delamination related rifting resulted in the Rodinia breaking up,namely,the main boundaries among the microcontinents may have been created in the Phanerozoic,and the tectonic or geochemical boundaries formed in the Grenville orogeny have been buried of reprinted.It is revealed that the East Asian continent is a composite one,with most microcontinents being of Gondwana origin during the Phanerozoic.The Gondwana may originate from some relicts of the broken Rodinia.The creation and disruption of the supercontinent Rodinia is a key to understand,in the light of mobilism,the tectonic evolution of China continent during the Proterozoic.

华南的格林威尔造山运动始自约1200MaB.P.,在约1000~950MaB.P.扬子与湘赣—华夏微大陆发生碰撞 ,继之以岩石圈的拆沉作用和造山带的快速坍塌 ,在仰冲板片和下插板片上分别形成华南裂谷的北支和南支 ,部分地区可能有新生洋壳出现。裂谷以北地区的造山活动持续到约740MaB.P.,碰撞高原控制了长安冰期的沉积 ,至南沱冰期沉积时它已近剥蚀夷平。文章重塑了新元古代时华南裂谷的演化 ,探讨了它在罗迪尼亚超大陆裂解中的意义

 
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