下地幔

下地幔温压下（Mg，Fe）SiO3钙钛矿的相稳定性

Stability of ( Mg , Fe ) SiO_3-Perovskite under the Condition of Lower Mantle Pressure and Temperature

钙钛矿MgSiO3和镁方铁矿（Mg，Fe）O作为地球下地幔含量最丰富的候选矿物，其高温高压实验数据用来与地震学探测数据进行对比以限定下地幔的真实矿物学组分。

MgSiO_3 perovskite and ferropericlase ( Mg , Fe ) O are generally considered as the most dominant components in the Earth 's lower mantle .

PKP震相包含了下地幔底部P波速度结构的重要信息。

Seismic PKP arrivals are sensitive to P velocity structure in the lowermost mantle .

本研究采用这些PKP波的AB和DF两个分支的走时差，研究了中太平洋下地幔底部P波速度的小尺度变化。

Here we use differential travels between the AB and DF branches of PKP waves to constrain the small-scale variation of P waves beneath the Central Pacific .

下地幔深部压力条件下顽火辉石Perovskite（MgSiO3）的冲击诱导相变

Shock & induced Transition of Perovskite ( MgSiO_3 ) under the Pressure of the Low Mantle

基于新生代幔源岩石化学反演的中国东部陆下地幔化学区划研究揭示了克拉通下（subcratonic）岩石圈地幔与EMI存在着密切关系。

A chemical zoning of subcontinental mantle beneath eastern China ( Zhou and Zhu , 1992 ) has shown the EMI affinity of sub - cratonic mantle based on a chemical inversion study of the Cenozoic mantle - derived rocks .

研究了0～150GPa压力范围内ZnO岩盐结构和GaN闪锌矿结构以及地球下地幔组成物质MgO的熔化特性；

Firstly , The reliability of the present potential model has been verified . Secondly , the melting of ZnO with rock-salt structure , GaN with zinc-blende structure and the Earth-forming mineral , MgO , have been investigated in the pressure range of 0 ~ 150GPa .

高镁火山岩接近于原始岩浆的组成，岩浆源区与地球平均成分BSE的成分特征相近，起源深度为下地幔，为该地幔岩较高程度的部分熔融（＞25%）而形成的。

High-Mg volcanic rocks approach the primitive mantle compositions , and their magmatic source is close to the composition of BSE , derives from the lower mantle and formed by this type - mantle rocks ' fractional melting highly ( > 25 % ) .

本文应用卫星测到的2～30阶球谐函数系数（GEM8）计算了台湾海峡及邻近地区的岩石圈层下地幔流应力场。

In the paper , we apply the 2-30 degree harmonic coefficients ( GEM8 ), which are determined by satellite measurements , to calculate the stress field of mantle convection currents under lithosphere in the Taiwan Strait and its adjacent region .

下地幔条件下地幔岩组分中的后尖晶石相变。

The post-spinel phase transformation in peridotite under lower mantle conditions .

地幔柱起源于上下地幔还是核幔边界？

Origin from upper mantle-lower mantle boundary or the core-mantle boundary ?

下地幔及核幔边界结构及地球动力学

Structure of lower mantle and core - mantle boundary region and its geodynamics

大地水准面异常和非洲下地幔异常体的结构

Geoid anomaly and structure of anomaly body in deep mantle under South Africa

应用卫星重力数据研究全球岩石层下地幔流应力场

Global Stress Field of Mantle Convection Currents under Lithosphere

利用低阶卫星重力位系数研究下地幔横向密度异常分布

Distribution of lateral density anomalies in the lower mantle obtained through low order geopotential coefficients

平极长期漂移与地球平均下地幔黏性估计

Secular drift of earth 's pole and estimate of the mean viscosity of the lower mantle

这一问题的研究对确定下地幔真实的矿物学组成有十分关键的影响。

This is the key problem for the constraint on the possible composition of lower mantle .

南海及其围区壳下地幔流应力场和陆缘扩张

Stress field of mantle convection current and continental marginal spread in South China Sea and its vicinity

因此，眼球构造可能是外地核向地幔释放氧，下地幔内存在氧元素的历史记录。

The eyeball structures might have recorded the history of oxygen activity in the mantle and the Earth 's core .

位于下地幔源热区之上的中国东部大陆，发生隆起、破裂、向洋漂移。

The east China continent located over the heat source of the lower mantle was uplifted , broken and drifted toward the ocean .

溢流玄武岩的同位素体系特征表明它们的源区涉及再循环地幔的壳幔混合、岩石圈减压熔融、上&下地幔过渡带和似原始-略亏损的下地幔。

Isotopic systematics of flood basalts indicate that their sources are involved in crust-mantle mixing in a recycled mantle , decompression melting of lithosphere .

进一步分析表明，下地幔D〃层磁能快速增长，主要是由高阶磁多极子的增强引起的。

The rapid increase of the magnetic energy in the D ″ may be ascribed to growth of high order multipoles in the geomagnetic field .

大洋岛玄武岩地化特征上的多样性提示，沉入下地幔的板片可能从深部卷入地幔柱的源区。

Geochemistry characters of oceanic island basalt suggest that the slab which descend into the mantle may be mixed with the source area of plume .

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。

Like the core of earth , the mantle can also be divided into two concentric layers , the lower mantle and the upper mantle .

如果金星存在相变形成的上、下地幔，依据现今所了解的金星物理性质和参量化的热对流理论，并且考虑金星地幔相变边界层状态对对流的控制作用，我们计算了金星热演化历史。

Base on the properties and parameters of the Venus and the theory of mantle convection , we calculate the thermal evolution history of Venus .

根据现有的研究，可将俯冲带橄榄岩大致分为陆下地幔橄榄岩、基性-超基性堆晶杂岩和大洋地幔橄榄岩。

On the basis of our studies , orogenic peridotites can be classified into subcontinental peridotite , intrusive mafic-ultramafic cumulate complex and oceanic mantle peridotite .

这一结果将对下地幔矿物学模型的建立和下地幔地震波探测结果的解释提供基础物理依据。

The results of this investigation provide basic physical evidence for the minerals composition model and the interpretation of seismic wave data for the lower mantle .

对比分析低阶大地水准面异常和地幔密度异常结果表明，地球形状非对称性主要是由下地幔的物质密度不均匀引起的。

Comparing low degree geoid anomaly with mantle density anomaly , The authors think the earth shape asymmetry is mainly caused by lower mantle density inhomogeneity .

五大连池、尚志等地新生代碱性玄武岩的实验岩石学研究依据高温高压实验岩石学和矿物物理测试结果，科学家们提出硅酸盐钙钛矿是下地幔最主要的矿物相。

Based on the results from both experimental petrology and mineral physics , scientists have worked out silicate perovskite as the major phase in the lower mantle .

为了深入了解俯冲作用对弧下地幔楔橄榄岩的影响，本文对马里亚纳岛弧南部前缘的橄榄岩进行了岩石、矿物学和地球化学研究。

In order to better understand the influence of the mantle wedge relating to subducting , the peridotites from the southern Mariana fore arc is checked in this paper .