地幔的一部分，即B层(莫霍面～400千米)和C层(400～670千米)，曾称榴辉岩圈。
misc. upper mantle ; outer mantle ; peridotite shell
... upper mantle上地幔；上部地函 mantle plume[地质]地幔柱 mantle convection地函对流，地幔对流；地幔对流 ...
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There is appreciable difference in noble gas isotopic composition among the mantle plume,upper mantle and crust. Using this feature,the mantle plume can be well traced and recognized.
利用地幔柱、上地幔和地壳在稀有气体同位素组成方面的明显差异,国际上在对地幔柱进行示踪和判识方面已取得了良好的效果。
参考来源 - 地幔柱稀有气体同位素示踪研究的进展及其意义·2,447,543篇论文数据，部分数据来源于NoteExpress
由于靠近地核，地幔底部的岩石比上地幔岩石的温度高得多。
Because of its proximity to Earth's core, the rock at the base of the mantle is much hotter than rock in the upper mantle.
当储层足够大时，这种炽热岩石的一个球体强行通过上地幔上升到地球表面，在地形上形成一个宽阔的隆起。
When a reservoir is sufficiently large, a sphere of this hot rock forces its way up through the upper mantle to Earth's surface, creating a broad bulge in the topography.
角闪石的出现反映上地幔流体的渗透及交代作用。
The occurrence of pargasite reflects the participation of the upper mantle fluids and the metasomatism.
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