海洋板块

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 .

自那时开始，海洋板块不断伸展。

Since then , as the ocean floor has continued to spread .

对海洋板块而言，软流层静压推力在物理意义上与传统的分布力型洋脊推力没有差别。

For a oceanic plate , there is no difference of ASP and the traditional ridge push force .

一旦海洋板块开始下沉，另一股力量也会对此产生影响——岩板拉力。

And once the ocean plate begins to sink , it would be affected by another force - slab pull .

海洋板块由更紧密，更重的石块构成，所以海洋板块开始下沉到大陆板块之下，沉到地幔表面。

So the ... um ... the oceanic plate is made of denser and heavier rock , so it begins to sink down under the continental plate and into the mantle .

内蒙古温都尔庙白乃庙地区是早古生代中亚蒙古海洋板块与华北陆台之间的海沟岛弧体系。

The wenduermiao Bailaimiao region in Inner Mongolia formed the trench island is a system between the central Asian Mongolia oceanic plate of Early palaeozoic and the North China continental platform .

正如我所说的，最近大西洋海底正在扩张，变得越来越宽，但一些研究人员猜测，最终在海洋板块和美洲大陆板块相遇之处，会形成一条俯冲带。

So , as I said , currently the Atlantic Ocean floor is spreading , getting wider , but some researchers speculate that eventually a subduction zone will occur where the oceanic plate meets the continental plate of the Americas .

西准噶尔西南地区古海洋地壳与板块构造

Ancient oceanic crust and plate tectonics in southwestern section of western Junggar

将中国海洋地震按板块构造理论划分为三个大的层次：（1）西太平洋岛弧－海沟强活动带；

According to the theory of plate tectonics , China 's oceanic earthquakes can be divided into three major levels : ( 1 ) Western Pacific Ocean arc-trench strong mobile belt ;

这种特征可能不仅和海洋与大陆板块汇聚边界的岛弧海沟上的基本应力状态有关，而且与自转速率不均匀产生的附加应力状态有关。

These correlations depend not only on the state of the basic stress field in the island arc-trench but also on the additional stress field caused by the variation of rotation velocity of the earth .

【参考译文】我们所知道的是，这段时间内在北美的西部边缘地带，海洋地壳，以及海洋板块，从北美板块下大面积地隆起。

What we know is that at the time of this grand uplift , on the western margin of North America , ocean crust , and Oceanic Plate , was subducting beneath the North American Plate .