查询词典 mantle

Its main aims include:(1) understanding the magmatic processes of the volcanic rocks and their petrogeneses;(2) discussing the possible enrichment processes induced by subduction of continental slab;(3) providing geochemical constraints on the nature of lithosphere (including the subcontinental lithospheric mantle and lower crust) of the different tectonic units confined by the major faults across the belt; and (4) geochemical comparison of the lithosphere in an attempt to define the possible boundary between the North China and Yangtze Blocks during Mesozoic time.

中文摘要：项目开展了穿越苏鲁造山带南北向晚中生代火山岩及相关火成岩的廊带剖面(包括苏鲁带的胶东、青岛、滁州和下扬子地区的溧水盆地)的地球化学研究，理解各区块晚中生代岩浆作用过程和成因，探索大陆俯冲作用的地幔富集过程以认知各主要断裂围限地区的岩石圈性质；通过对比不同地区的岩石圈性质来限定苏鲁地区华北与扬子陆块的中生代碰撞边界。

In particular, 373 selected deep earthquakes are believed to play an important role in increasing the reliability of inversion for upper mantle and subduction zone.

尤其是，所数据中的373个深源地震对提高上地幔和俯冲带反演结果的可靠性起到重要的作用。

Subduction recycling process has a major effect on the dynamics and evolution of the crust and mantle.

俯冲再循环过程对地壳、地幔的动力学和演化产生深刻影响。

The research on the Sulu ultra-high-pressure metamorphic belt has great significance for understanding the continental geodynamic processes that occurred in the deep mantle.

苏鲁超高压变质带的研究对了解发生在地幔深处的大陆动力学作用具有重要意义。

They are most likely related to the so called mantle plume that led to the rifting breakup of the supercontinent Rodinia.

它们极有可能与导致Rodinia超大陆裂谷化-裂解的地幔柱活动有关。

This project utilized surface wave data to study the crust and upper mantle anisotropy of China.

本项目利用地震面波记录研究中国大陆地壳上地幔的各向异性性质。

The geochemistry, oxygen isotopic composition and biotite composition of the syenite suggest that its rock-forming material was derived from the enriched upper mantle.

渐新世碱性正长岩与中新世钾质火山岩构成了该区碰撞后的构造岩浆组合，是在印度-欧亚板块碰撞引起的岩石圈加厚及高原隆升的基础上，岩石圈拆沉、软流圈上涌导致富集的岩石圈地幔部分熔融所形成的。

Taihangshan as a symmetric axis and Shanxi belt, located in the relatively uplifted portion of upper mantle in regard to their depths. Therefore, it is...

因此，作者认为，重力和重力均衡调整的作用在很大程度上影响了华北大地构造的发育，塑造了其地壳结构的基本形态，因而也就制约了华北地区的地震活动。

Taihangshan as a symmetric axis and Shanxi belt, located in the relatively uplifted portion of upper mantle in regard to their depths. Therefore, it is consi...

因此，作者认为，重力和重力均衡调整的作用在很大程度上影响了华北大地构造的发育，塑造了其地壳结构的基本形态，因而也就制约了华北地区的地震活动。

Based on the isotopic compositions of samples and their distribution characteristics on the _-T,~(87Sr/~(86)Sr_i-T, and _-_ diagrams, these granitoids of syntexis series are considered as mixing products of upper crust end-member and depleted mantle end-member in certain proportion.

根据样品的同位素组成及其在￠Nd-T，(87Sr/86Sr)i-T和￠Nd-￠Sr图上的分布特征，认为这些同熔系列花岗岩类是华南上地壳端员和亏损地幔端员按一定比例混合的产物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。