...球球的结构古登堡面， 2891KM54 地壳(Crust)软流圈(Asthenosphere)上地幔(Upper mantle):橄榄石及硅酸盐矿物下地幔(Lower mantle):铁镁质及硅酸盐矿物外核(Outer core) :液态熔融的金属铁内核(Inner core):固态铁55 位于地幔上部。
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这二个地震层面如同温度计一般，提供研究人员了解下部地函（lower mantle）最底部温度的状况。此外，前述二个地震层面的发现亦提供研究人员来验证：(1)较低温的岩石圈 (lithpsphere) 之物质是否隐没至地函...
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lower mantle viscosity 下地幔粘性
composition of lower mantle 下地慢组分
lower mantle mineral associations 下地幔矿物组合
Downwelling superplume of lower mantle 超级下降地幔柱
lower r mantle 下地幔
Lower Yangtze mantle 下扬子地幔
This paper deals with the advance in study of the composition, geochemistry and deep seated fluids of lower mantle.
主要论述深部地幔的组成、地球化学及深部流体研究的进展。
Like the CORE of earth, the mantle can also be divided into two concentric layers, the lower mantle and the upper mantle.
就像地球的核部一样。地幔也可分为两个同心圆圈层，下地幔和上地幔。
The east China continent located over the heat source of the lower mantle was uplifted, broken and drifted toward the ocean.
位于下地幔源热区之上的中国东部大陆，发生隆起、破裂、向洋漂移。
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