地幔不均一性

CFB总体岩石及地球化学成分均一，富集同位素及不相容元素，但一些样品含有明显的亏损成分，反映出普遍的地幔不均一性。

On the whole , the petrologic and geochemical compositions are homogeneous and enriched with isotopes and incompatible trace elements . However , some samples contain conspicuous depleted compositions , reflecting a general mantle heterogeneity .

大别山这种不寻常的镁铁质下地壳俯冲成因榴辉岩为研究大陆深俯冲和陆壳物质再循环以及对地幔不均一性的影响提供了重要对象和可能性。

This kind of unusual eclogite provides an opportunity to study the deep subduction of mafic lower continental crust and its recycling and effects on the mantle heterogeneity .

提出：中国西部盆山地区地壳构造运动发生的主要原因是地壳及上地幔的不均一性（包括结构构造的不均一性以及物质成分的不均一性）。

The author holds that the tectonic movement of the crust in the basin-mountain areas of Northwest China is mainly attributed to the unhomogeneity of the crust and the upper mantle , including the unhomogeneity of structures and components .

其成因与深部地幔物质的不均一性及相关的运动状态有关，主要成生时限为早二叠世至早、中三叠世；

It resulted from the inhomogeneity and motion of upper mantle .

地幔流体REE的研究有助于了解地幔区域化学不均一性、地幔的富集与亏损等地幔地球化学特征。

Study on REE in mantle fluids has significance for understanding of regional geochemical difference , mantle enrichment and depletion .

华北地台东部古生代与新生代岩石圈地幔特征及其演化华北太古代上地幔钕同位素组成、演化及对该区岩石圈地幔不均一性的制约

Comparison between Palaeozoic and Cenozoic Lithospheric Mantle in the Eastern Part of the North China Block & With a Discussion of Mantle Evolution Nd ISOTOPIC COMPOSITION AND EVOLUTION OF THE UPPER MANTLE IN THE ARCHAEAN OF NORTH CHINA : CONSTRAINTS ON THE MANTLE HETEROGENEITY OF THE UNMETASOMATIC CONTINENTAL LITHOSPHERE