俯冲板块

秦岭俯冲板块前缘石炭纪构造-沉积环境

Carboniferous tectonic and sedimentary setting of frontal margin of Qinling subducting plate

随着俯冲板块被加热而回升到地幔的温度，板块中的某些矿物较其他矿物先熔化了。

As the subducting plate is heated back up to mantle temperatures , certain minerals in the plate melt sooner than others .

说明虽然层析成像方法的分辨率较低，但它能给出俯冲板块上P波速度随深度变化的基本特征。

Though resolution is low , seismic tomography shows the basic properties of P wave speed variation in subduction zones .

利用CNSS编辑的深源地震目录，对全球深度500km以上的俯冲板块形态进行研究，给出了俯冲带的俯冲参数，以及菲律宾和班达弧俯冲带的三维形态。

By means of the deep focus earthquake catalogue , the diving plate shape which the depth is more than 500 km was studied . The diving coefficient of the diving belt and three-dimensional shape of the diving belt in Philippines and Banda island arc was given in this paper .

斜俯冲板块边界变形分配的力学分析

Mechanics of deformation partitioning at plate boundaries of oblique subduction

俯冲板块的位移及位移方向。

The displacement and the direction of the subducted plate .

地幔底层既是俯冲板块的最终归宿，又是热柱和超级热柱的源区。

The CMB is the impinged by subducted slAbs and is the source of mantle plumes and super plumes .

本文探讨这种相关关系的力学成因，计算了俯冲板块诱生的弧后上涌地幔流动。

We investigate the mechanics of the correlation by calculating the induced mantle flows by subducted slab in back-arc regions .

东海南海构造交接带及其邻近海区（简称交接带）位于中国东部大陆边缘，东邻俯冲板块边界。

The connect zone between the East China Sea and South China Sea is located at East China Continental Margin .

在地幔底层可能发生地幔物质（包括俯冲板块物质在内）的部分熔融作用，也可能存在外核液态铁与地幔硅酸盐的化学反应。

Within this lowermost mantle layer , the partial melting of material of lower mantle and chemical reaction of core mantle material can occur .

俯冲板块脱失流体的混入可能发生在岩浆作用早期，或者说俯冲板块脱失流体对地幔熔融产生岩浆起了重要作用。

Therefore , the fluid dehydrated from subducting slab should have been added to magma at its forming stage or play an important role in the melting of mantle .

岩浆演化过程中主要发生结晶分异作用，外来物质的混染作用较弱，混染物来自上地壳和俯冲板块。

The fractional crystallization is the main geological process in magmatic evolution , and contamination is weak . Two exotic components come from upper crust and / or subduction plate .

基于本文的叠加方法，我们可以快速准确地得到地下间断面的起伏，并与物质的温度异常联系起来，从而可以用来探测地球内部俯冲板块和热点热柱的分布。

Based on the upper method , we can obtain the topography of the discontinuities immediately , which is correlated with the distribution of the subducted slab and hotspots and plume .

在高压超高压变质作用过程中所释放的流体对俯冲板块的演化起着重要作用，与岛弧岩浆活动有着直接联系。

Fluid released during the high pressure and ultrahigh pressure metamorphism plays an important role in the evolution of subducted slab and may connect directly with igneous activity in island arcs .

耦合弱的特点与俯冲板块年龄小、抗挠强度弱、俯冲角度大、海沟后撤、岛弧裂离和弧后拉张等特点是一致的。

The weak couplings are in agreement with such tectonic features as young subduction slab , weak flexure strength , large subduction angle , trench retreating , arc rifting and backarc extension .

这些特点说明琉球沟弧系上覆板块与俯冲板块的耦合比其他沟弧系弱，而琉球海沟本身又往南趋弱。

These characteristics reflect that couplings between the upper arc and the subduction slab of the Ryukyu trench are weak relative to other common trenches , and themselves weaken toward to the south .

在俯冲板块进入地幔后，含金流体和分熔产物一起上升并交代地幔楔，形成能够产生富金煌斑岩浆的富集地幔。

When the down_going plate enters the mantle , gold_bearing fluids accompanied by partial_melting products will rise and react on the mantle wedge , resulting in an enriched mantle that is fertile for the generation of gold_rich lamprophyre magma .

巨晶的锂同位素组成直接继承自地幔源区，高δ7Li的特征暗示源区受到过俯冲海洋板块析出流体的交代作用。

Lithium isotopic composition of the megacrysts has been inherited from the deep source , and the high δ ~ 7Li suggests that the mantle source was influenced by fluids from the subducted oceanic plate .

新西兰南岛北端研究表明，俯冲大洋板块能携带宽度达150km左右的窄条陆壳克服浮力达到超高压变质深度，而大陆板块碰撞的主体则浮在岩石圈上形成走滑断层。

Studies on the northern South Island of New Zealand indicate that subducting oceanic slab can overcome the buoyancy and drag adjacent continental sliver up to about 150 km width to UHM depths , while the main body of continent can only float upon the mantle to produce strike-slip faults .

该矿床是太平洋板块俯冲大陆板块在该区构造&岩浆活化的体现。

The deposit is a personification of continental plate subducted by pacific plate in tectono-magmatic activation in the region .

该成矿带位于北祁连加里东优地槽的东南缘。这里是向南俯冲敛合板块残留的岛弧。CAB插槽42和地、CAB插槽5。

Being the residual island are of the convergent plate subducted to the south , the central Baiyin Minerogenetic Belt is located at the southeast edge of the north Qilian Caledonian eugeosyncline .

有限单元模型的边界条件为太平洋板块相对北美大陆板块的俯冲及与板块俯冲作用有关的大洋地壳的逆冲作用。

Fault development is predicted according to Mohr-Coulomb criterion . The subduction of the Pacific plate beneath the North American plate and associated underplating of oceanic crust marks the boundary condition of finite element model .

大别一苏鲁造山带出露有世界上规模最大、保存最好的超高压变质地体，是三叠纪时扬子板块向北俯冲进入华北板块之下，而形成的大陆碰撞造山带。

The Dabie-Sulu orogenic belt , formed by the collision of the Yangtze craton and the North China craton in the late Triassic , has been know as the largest and best-preserved UHP terrane all over the world .

层析成像等资料显示：太平洋板块低角度俯冲到欧亚板块之下后没有穿透670km相变界面，而是平卧于该界面之上。

The Pacific plate subducts at low angle beneath the Eurasia plate , tomographic results indicate that the subducted Pacific slab does not penetrate the 670 km discontinuity , instead , it is lying flat above the interface .

扬子板块俯冲在华北板块之下，于三叠纪末完成陆-陆碰撞，进入陆内俯冲阶段，在造山带的侧翼形成陆内前陆盆地。

The subduction of Yangtse plate under the North China plate ended the continental collision and changed into intracontinental subduction at the end of Triassic , resulting in the formation of intracontinental foreland basins on the flanks of Dabie-Sulu orogenic belt .

复向斜的形成机制完全符合纵弯褶皱作用下岩石的变形原理，是西伯利亚板块和华北板块碰撞的结果；秦皇岛背形的形成是后期太平洋板块俯冲在欧亚板块之下所致。

Mechanism of the synclinorium is completely coincided with the rock deformation under the longitudinal bending and the synclinorium is resulted from collision of the north China plate and Siberia plate and Qinhuangdao antiform from the subduction of pacific plate under Eurasian plate .

研究表明盆地区域主压应力场方向在加里东期呈NNE-SSW向和近SN向，主要是晚奥陶世以来秦岭洋盆向北俯冲并与华北板块碰撞的结果；

The directions of the major tectonic stress fields for the basin are NNE-SSW and SN respectively during the Caledonian movement , and this was resulted from the northward subduction of the Qinling ocean basin and its collision with the North China plate since late Ordovician .

智利发生的这场里氏8.8级大地震属于“大逆冲型地震”，只有当一个地壳板块俯冲至另一板块的下方时才会发生，被认为是地球上威力最强的地震。

The magnitude-8.8 quake was a type called a " megathrust ," considered the most powerful earthquake on the planet .

当某地壳板块俯冲到另一板块下面时，被摩擦掉的那部分岩石就以褶皱的形式堆积起来形成山脉。

When one tectonic plate slides beneath the other , the parts of it that are scraped off pile up in buckling folds to form mountains .

下一个例子是几年后发生俯冲，该俯冲板块的顶端进一步推动，但第一次起皱时会发生什么情况？

Then the next instance of subduction occurs years later , and the lip of the subducting plate pushes further , but what happens to the rumpling that occurred the first time ?