Th enriched upper mantle exists not only in the continental aere but in the orogenic zone. It may be a chemical reaction occurred in interior of the whole earth.

富集型上地幔不但存在于大陆区，而且亦存在于造山带地区，它可能是一种全球性的地球内部的化学作用。

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Mantle xenoliths brought up by Cenozoic volcanic rocks onto the earth surface may provide direct information about the upper mantle beneath the volcanic region.

新生代火山岩中的幔源包体可以提供有关上地幔的直接信息。

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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。

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The rock is peridotite, which is one of the main rocks in the upper mantle, an area that provides a girth below the Earth's crust.

ECONOMIST: Greenhouse gases