Tectonic environment of formation of enriched upper mantle is oceanic crust displacement from the oceanic mid-ridge to the orogenic zone.
造山带富集型上地幔形成的构造环境是：洋壳从扩张脊向两侧运移并最终拼入造山带这段时间内。
It is difficult to see how the theory applies to the plate between the Mid-Atlantic Ridge and the ridge in the Indian Ocean.
很难看出这个理论如何适用于大西洋中脊和印度洋脊之间的板块。
The result: underwater mountains and hills all along the axis of the mid-ocean ridge.
其结果便是：沿着大洋中脊形成了海底山脉和山丘。
As the new crust cools, it sinks under its own weight-a process called subsidence-so the seafloor should be deeper the farther it is from a mid-ocean ridge.
随着这种新地壳的冷却，它会在自身重力的作用下凹陷下去，这个过程被称为“沉降”。因此，在距离海洋中部山脊越远的地方，海底就应该越深。
Its existence depends entirely on what geologists call the mid-Atlantic ridge.
它的存在完全取决于地质学家所称的中大西洋海脊。
About 100 million years from now the present-day Mid-Atlantic Ridge will be subducted and the continents will come closer together.
大约在距今一亿年之后，大西洋的中洋脊将会隐没，大陆和大陆之间则会越靠越近了。
The study of geochemistry indicates that these metabasic volcanic rocks are characterized with N-type MORB (mid-ocean ridge basalt).
地球化学研究表明，其为典型的大洋拉斑玄武岩（MORB型玄武岩）。
Iceland lies on the Mid-Atlantic Ridge, the volatile meeting of the Eurasian and North American continental plates.
冰岛位于大西洋中部的脊上，是亚欧大陆和北美板块的交界活动处。
As magma rises under the mid-ocean ridge, ferromagnetic minerals in the magma become magnetized in the direction of the geomagnetic field.
当岩浆从中海脊下涌起的时候，岩浆中的磁铁矿物质按地磁场的方向被磁化。
As magma rises under the mid-ocean ridge, ferromagnetic minerals in the magma become magnetized in the direction of the geomagnetic field.
当岩浆从中海脊下涌起的时候，岩浆中的磁铁矿物质按地磁场的方向被磁化。
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