俯冲

90Ma. The variance of dip angle of subduction slab was caused by the velocity change of subduction slab.

造成俯冲板块倾角随时间变大的主要原因是板块俯冲速度减小。

Scientists used to explore on the surface of the ocean.now they are explore below the surface,too.they want to know about ocean water and the plant and animal life deep in the ocean.in 1934 the scientist William Beebe dived 3,000 feet below the surface in a hollow steel ball.in 1935 august piccard dived 10,330 feet.

科学家用来探讨在表面上的ocean.now他们探索下面从表面上看， too.they想要知道海洋的水与植物和动物生命的深层在ocean.in 1934年科学家威廉beebe俯冲3000英尺低于表面在一个中空钢ball.in 1935年8月piccard俯冲10330英尺。

The intra-continent subduction occurred under the influence of distant compressure of subduction and collision taking place between the Indian plate and the Eurasia plate in the Mesozoic-Cenozoic.

天山山系是中国西北地区的一个复合造山带，中、新生代以来在印度板块与欧亚板块俯冲碰撞的远程挤压效应影向下，发生了陆内俯冲。

On basis of analysis of typical cases, four kinds of foreland basins were recognized:(1) subducted-collisional foreland basin;(2) retro-arc foreland basin (arc-continental collisional foreland basin);(3) intracontinental subducted foreland basin; and (4) strike-slip foreland basin.

在典型实例分析基础上，划分出四种类型的前陆盆地：(1)俯冲碰撞型前陆盆地；(2)弧后前陆盆地；(3)陆内俯冲型前陆盆地；(4)走滑型前陆盆地。

In the environment of pressure stress field that caused by the movement toward north of India, Australia and Pacific plates to the south and east, a strong intracontinental subduction overprinted on the deep delamination. of Dabie orogenic belt, and the subducting sediments of Yangtse plate were melted to form the "syncollision" peraluminous granite of this epoch.

在中国大陆南部和东部的印度、澳大利亚和太平洋板块的北向运动所造成的NS向挤压应力场环境中，大别造山带在深部拆沉作用的基础上，又叠加了一次强烈的陆内俯冲作用，俯冲的扬子板块沉积物质熔融形成该期"同碰撞"过铝质花岗岩。

Calidonian granites are widely developed in the Yema Nanshan area in the western segment of the Qilian orogenic belt. The geochemical characteristics of most of the granites are similar to those of adakites: SiO2≥56%, Al2O3≥15.0%, low MgO (average 2.04%), high Sr (257-889μg/g, average 546.42μg/g), low Y (7.1-25.3μg/g,average 16.67μg/g), average Sr/Y=5.89, no pronounced Eu anomaly and Sr positive anomaly. Adakites in this area have five rock types, quartz diorite, quartz monzodiorite, quartz monzonite, monzogrannite and hornblende granite. These rocks commonly contain hornblende, belonging to I-type granites.

提要：祁连西段野马南山一带发育大量的加里东期花岗岩，其中大部分花岗岩具有与adakite岩相似的地球化学特征，SiO2≥56%， Al2O3≥15.0％，低MgO（平均2.04％），高Sr(257～889μg/g，平均值546.42μg/g)，低Y（7.1～25.3μg/g，平均16.67μg/g），Sr/Y平均为35.89μg/g，Eu无明显负异常，Sr正异常，Adakite岩石类型有石英闪长岩、石英二长闪长岩、石英二长岩、角闪花岗岩、二长花岗岩，岩石中普遍含有角闪石，属I型花岗岩，地球化学图解反映该花岗岩形成环境为板块碰撞前的岛弧型，锆石U-Pb同位素年龄为444+38/-33 Ma，处在祁连造山带板块俯冲收缩阶段，因此可以推断野马南山埃达克质Adakite花岗岩是俯冲板片部分融熔和壳幔岩浆混合形成的。

In summary, the above evidence shows that this ophiolite formed in the SSZ environment and melts from subudcted plate are joined during its formation.

总之，上述证据表明该蛇绿岩形成在俯冲带，来自俯冲板块的熔体参与了它的形成。

The early stage of me tamorphism happened before deformation in the upper mantle at about 60-70km. Then metagabbro emplaced rapidly at about 40 km by diapirism and perhaps amalgamated with cool subducted oceanic crust. After that, rapid cooling retrograde metam orphism occurred. Early rapid ocean spreading was constrained because subduction appeared. Therefore, metagabbro continued to uplift under the slow extension. At last, it obducted and thrusted to outcrop on the surface.

变形前的早期变质可能发生在60～70km处的上地幔，然后变质辉长岩快速"底辟"构造侵位，上升至约40km深处，可能与俯冲的冷洋壳并置，发生快速降温退变反应；因俯冲作用的开始，抑制了洋盆快速扩张，变质辉长岩在减速伸展环境下继续抬升减压；后期又由于仰冲推覆，最终出露地表。

The results show that the present convergence rate of the India plate is 21.8 mm/a with a dipping 8.1°to the north. This is in good agreement with various geologic predictions of 18mm/a in past 2～3 million year implying a stable convergence rate of the India plate in a very long duration.

本文 结果与从地质推断的在过去2～3Ma时期内，印度板块向欧亚大陆俯冲速率平均为18mm/a，有较好的一致性，表明在较长时间内，印度板块向欧亚大陆俯冲的速率仍然是稳定的。

In the process of intraplate convergence of continental lithosphere, parallel-layer detachment s commonly occur during the subduction of continental crust, owing to the multi-layer and multi-interface characteristics of the subcontinental lithosphere.

与洋陆俯冲关系不同，在板内汇聚过程中，大陆岩石圈固有的多圈层、多界面结构的特点，使得地块的俯冲变形伴有多圈层顺层拆离解耦的行为，使变形结构复杂化。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。