两个板块相遇时,一个板块下插到另一相对被动的板块之下,这个下插板块就是俯冲板块。在通常情况下,俯冲板块是指由洋壳组成的大洋板块。因为洋壳由硅镁质物质构成,密度较大,相对于陆壳而言更易下沉。
对于目前的模拟俯冲过程的物理模型中,有些只包括俯冲板块(subducting plate),有些只包括上伏板块(overriding plate),有些尽管包括俯冲和上浮板块,但存在无法量化的外力(external force)作用在板块上...
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... downgoing slab 俯冲板块 downgoing subsurface intrabed multiple 下行地下层间多次波 downgoing time 下行时间 ...
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岩浆的起源与古生代特提斯海俯冲板块的脱水有关。
The origination of the magma is related with the dehydration of the subducting plate of the Paleozoic Tethys Sea.
同时,俯冲板块上深海沉积物与基性岩浆混合作用也是不容忽视的因素。
In addition, mixing between abyssal sediments on the subducted plate and basic magma is also a factor that can not be negligible.
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?
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