lower crust meaning in English
下部地壳
下地壳
Examples
- The velocity difference between the two layers of the lower crust is not obvious
下地壳的两构造层速度差异不明显。 - ( 3 ) the mineral source was provided by both lower crust , upper mantle and upper crust , obviously from crust - mantle mixing
( 3 )矿田中的成矿物质的不仅来自于下地壳和上地幔，而且还来自于上地壳，具有壳幔混合特征。 - N2 - rich inclusions were first founded in ore area ; it may form by upper mantle or lower crust material during oxidation - devolatilization reactions
铁矿体被铜矿体包围，铁矿石被铜矿细脉穿插，说明铜矿化的形成晚于铁矿化。 - The formation of the enriched mantle ( em1 ) is attributed to the strong metasomatism - taking place between subducted yangtze lower crust and nc ( north of china ) ancient lithosphere
2 、火山岩、碱性超基性脉岩和基性脉岩(除少数外)都形成于大陆板内拉张环境。 - Studies on the metamorphic history of the granulites on a very old platform provide us some important information of the properties , status and forming processes of the lower crust and forming mechanism of the early continent crust
古老地台麻粒岩的变质历史研究可以为我们深入了解下地壳性质，状态及形成过程，探讨早期大陆地壳的形成机制提供重要的信息。