大洋板块

由于所考虑的大洋板块直径为10~3公里数量级，故必须考虑其曲率的影响。

As the radius of an oceanic plate reaches the order of 103 kilometres , the curvature of the plate should be considered .

俯冲板片向下消减作用的加强使得位于洋内俯冲带之上的大洋板块发生局部拉张，形成扩张脊。

The reinforce of slab subduction resulted in the local extension of oceanic plate above the subduction zone and the formation of spreading ridges .

由于大洋板块的俯冲作用，在缝合带中MOR型蛇绿岩很少被保存下来，保存较好的大多数为SSZ型蛇绿岩。中国大陆东部大洋板块俯冲的三维黏弹性有限元模型

Therefore , SSZ-type ophiolite is major one preserved well in the orogenic zone . 3-D VISCO-ELASTIC FINITE ELEMENT MODEL FOR THE SUBDUCTION OF THE OCEAN PLATES INTO THE EASTERN PART OF CHINA 'S CONTINENT

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 .

大洋板块拖曳窄条陆壳俯冲&大规模超高压变质形成的构造条件

Continental Sliver Subduction Driven by Oceanic Slab : Tectonic Settings for Large Scale Ultra-high Pressure Metamorphism

因此一般而言，古大洋板块的多旋回俯冲可以导致地槽褶皱带的多旋回发展。

Therefore , polycyclic subduction of ancient oceanic plate , so to speak , may in general lead to polycyclic development of a geosynclinal foldbelt .

大洋板块俯冲有俯冲加积和俯冲侵蚀两种不同的构造作用，它可在不同的时间-空间相互转化。

The subduction of oceanic plates has two tectonic actions of subduction accretion and subduction erosion , which ar interconvertible in different time and space .

主要形成于大洋板块洋中脊构造环境，部分为岛弧一洋岛环境下的产物。

They mainly formed at tectonic environment of the middle ridge of the oceanic plate , partial are the products of island arc and oceanic islands .

最后，大洋板块的地质不同于从广泛的岛周围浅滩到世界中一些最深的海沟。

Finally , the topography of the ocean floor varies from extensive shoals around the islands to some of the deepest marine trenches in the world .

任何假设的能推动或拉动大洋板块的力，会很快因克服在其下静态的热体地幔上滑动的摩擦力而被消散。

Any hypothetical force postulated to either push or pull oceanic plates would be quickly dissipated overcoming the friction of sliding over a static fluid mantle beneath .

这反映华北克拉通东部区域拉伸方向的演变受控于太平洋区大洋板块运动，克拉通破坏的动力学背景应为弧后伸展。

It is suggested therefore that the extensional direction evolution was controlled by the oceanic motion and the craton destruction took place under a back-arc spreading setting .

综合分析认为，岩石圈的减薄与东侧太平洋板块的俯冲有关，即大洋板块的俯冲作用导致岩石圈加厚，进而发生岩石圈拆沉。

It is thought that the lithospheric thinning was related to the subduction of Pacific plate in the east , which resulted in the lithospheric thickening and subsequent delamination .

在全球构造演化中，古生代它们被夹持于周围巨大的大洋板块之间，中生代以来则夹持于同样巨大的西伯利亚、印度大陆板块和太平洋诸大洋板块之间。

In the global tectonic evolution , they were placed in between the surrounding macro-oceanic plates in Palaeozoic , and in between the Siberian and Indian continental plates and several oceanic plates in Pacific since Mesozoic .

提出岛弧等弧形构造主要是在弧形构造位移场、应力场作用下逐渐形成的，而大洋板块的俯冲作用是次要的。

It is suggested that the arcuate tectonics including the island arc are gradually formed under the action of their own deformation and displacement fields , and the subduction of the oceanic plates is less important for it .

使用冲绳海槽地区地质、地球物理、地球化学数据与资料，对横跨大陆边缘大洋板块的中国东部冲绳海槽琉球岛弧地区进行综合研究。

A mass of geological , geophysical and geochemical data and information from the Okinawa Trough area are collected for comprehensive research in the study area from East China to Okinawa Trough and then to Ryukyu Island Arc region .

这两个花岗岩类岩体的形成不仅证实了东天山存在着晚加里东期岩浆活动，而且其形成与哈萨克斯坦准噶尔大洋板块向塔里木板块俯冲密切相关。

The ages determined not only confirm the existence of Late Caledonian magmatic activities in East Tianshan Mountains , but also demonstrate the intimate relationship between the magmatic activities and the subduction of the Kazakstan-Junggar ocean plate beneath Tarim plate .

低温超高压变质作用与大洋板块的冷俯冲作用有关，其研究对于探讨俯冲带水流体的循环和地幔水流体的成因具有重要意义；

Because the low temperature UHP metamorphism was caused by cold oceanic plate subduction , studies of the low temperature UHP metamorphism is of great significance for the understanding of the H_2O cycle in subduction zones and the origin of fluids in the mantle .