查询词典 lithosphere

Plate tectonics; ocean ridge; magmatism; ocean crust; lithosphere; Benioff Zone; Precambrian; seafloor magnetic lineations; mantle; basalt; transform fault; metamorphism; metamorphic facies; Strontium isotope; sulphide ore

关键词：板块构造；洋脊；岩浆作用；洋底壳；岩石圈；贝尼奥夫带；前寒武纪；海底磁性线壮构造；地幔；玄武岩；转换断层；变质作用；变质相；锶同位素；硫化矿

Mantle xenoliths from 12 localities in Eastern China are studied in this paper to investigate the composition, thermal structure, and Redox states of Continental Lithosphere beneath Eastern China.

本文以中国东部新生代碱性玄武岩中12个代表性产地的深源包体为研究对象，对中国东部大陆岩石圈的成分、热结构与氧化状态进行了较系统的研究。

Are chemical composition models of continental crust and lithosphere in China reliable?

中国大陆地壳和岩石圈化学成分模型可信吗？

In the new model the tectonic driving force is not the mantle convection, but the relative movement of horizontal shear between the continental lithosphere slab due to A-type subduction characterized by spreading and separating and the asthenosphere.

新模式不是以地幔对流运动，而是以扩张分离A型俯冲的大陆岩石圈板片与软流圈之间的水平剪切相对运动机制作为它的躯动力。

Also being with the metamorphic crystalline basement formed later and suffered the stronger tectonic event and the material composition reforming, being composed of the material with low density and existing the relatively weak intrinsic mechanical system, Huaxia massif was affected by the various tectonic movement in the later period, the layers inside the lithosphere interacted under action of the tectonic force, this led to the material composition and the structure regulated and changed constantly by the magmatism in the crust, underplating and faulting and folding, therefore, the ability to resist the deformation decreased with the every variation.

华夏地块变质结晶基底形成时代晚，并遭受更多更强构造变动与物质组分的改造使之物质组成密度较小，岩石圈先期固有的力学结构系统相对较弱，尤其是后期的地球大系统的历次构造运动都对其施加影响，构造动力作用下引起内部圈层间相互发生作用，导致内部物质成分、结构形态通过壳内岩浆活动、地幔底侵作用、断裂褶皱等不断的调整重组重建而变化，其每一次调整变化，都使其总体抵抗变形能力进一步降低。

It is inferred that the Baiceng basic-ultrabasic pluton originated from a mixed melting between an enriched lithospheric mantle and the continental crust rock formed in 409-450 Ma, responding to an extension of lithosphere at 84 Ma or so.

据此认为84Ma左右由于华南岩石圈伸展，软流圈地幔上涌，导致岩石圈富集地幔部分熔融，熔体上升过程中与409～450Ma左右形成的少量地壳岩石发生混染，随后快速侵位冷凝而形成基性-超基性岩墙。

These data indicate that Group B zircon grains are captured ones. It is inferred that the Baiceng basic-ultrabasic pluton originated from a mixed melting between an enriched lithospheric mantle and the continental crust rock formed in 409～450 Ma, responding to an extension of lithosphere at 84 Ma or so. This induced the upwelling of asthenospheric mantle.

据此认为84 Ma左右由于华南岩石圈伸展，软流圈地幔上涌，导致岩石圈富集地幔部分熔融，熔体上升过程中与409～450 Ma左右形成的少量地壳岩石发生混染，随后快速侵位冷凝而形成基性_超基性岩墙。

High velocity anomalies heneath North China basin and Yanshan uplift in the depth range of 200-300 km may be an indication of the detached Archaean continental lithosphere.

在华北平原及燕山隆起下方200-300 km存在高速异常可能与太古代大陆板块岩石圈的残留体有关。

Moreover, strong anisotropy is observed in the north and southcentral Tien Shan. Fast Pn velocity in the southcentral Tien Shan is nearly in NS directions, which is consistent with the SKS wave anisotropy concerning mantle flow. However, fast Pn velocity directions in the northcentral Tien Shan show a southward rotation variation. We estimate that it is probably related to the inserting of the crust of the Chu basin from the southern Kazakhstan platform to the central Tien Shan, which caused a change of stress fields and lithosphere deformation.

中天山北部和南部的各向异性也存在一定的差异，南部各向异性的快波方向为近南北方向，与SKS波的各向异性特征基本一致，反映了地幔物质的迁移方向；北部各向异性的快波方向呈向南凸出的旋转趋势，估计与哈萨克地台南缘楚河盆地地壳块体向天山挤入造成应力场的改变和岩石层变形有关。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。