查询词典 mantle

Some important fruits and understanding are resulted from the the Crust and Upper mantle Tomography of China.

本文首先探讨了面波衰减的机理，对面波衰减和S波品质因子Q〓反演的计算方法进行了系统的研究，并对中国大陆地区地壳上地幔Q〓三维结构进行层析成像，取得了以下重要成果

The structure of the crust and upper mantle is characterized by consistent variations with the sh...

盖层和结晶地壳的密度和磁性结构在垂直方向以及隆起和坳陷构造带间，都存在明显的不均一性。

In studying the structures of the crust and the upper mantle from refractions, the Tau method provides a new and effective approach.

在利用迥折波研究地壳上地幔构造时，τ是一种新的有效反演方法。

As the boundary between crust and upper mantle, it is closely related with the separation and regulation of deep matter and the movement and coupling of shallow and deep substance.

这不仅由于它是地壳与上地幔的分界，而且它与深部物质的分异、调整及其深、浅物质的运移和耦合密切相关。

The third chapter of this paper explored the method of acquiring amplitude-ratio,and also the significance of the amplitude and gravity data for the probing of the crust and upper mantle's structure is investigated.

本文第三章研究了相对振幅比的获取方法，探讨了利用振幅和重力资料模拟来约束地壳速度结构的有效性，从而形成本文层析成像工作的总体结构。

The concept of mantle convection potential field is introduced to calculate stress field as easily as calculating vertical deflection.

引入地幔流位场概念，使地幔流应力场推算与垂线偏差计算获得统一而简化。

Add cement mantle on tower reduce the vibration of generator set.

在塔架上段增加水泥环，减少了机组的振动。

It shall become clearer in each day that the flock who are consecrated to my heart and carried by my arms in these final times, shall be those who are faithful to the Gospel message, the Vicar of Christ, adore my Son's presence in the Eucharist: these shall be enclosed in the folds of my mantle by the Consecration to My Immaculate Heart.

情况将会一天比一天清楚：那些奉献了给我的心，又在这最后的时日中给我的臂弯紧抱著的人，将会是那些忠於褔音，忠於基督的在世代表和朝拜圣体的人。他们藉著奉献给我的无玷之心，被我的外氅包裹著。

Our project is based on Cenozoic volcanic rocks and deep seated xenoliths in it to reconstruct the source composition and ctructure. We did field investigation, collection of samples, determination of age and composition characteristics of selected samples. The new achievements are following. 1 recognized a potassic metasomatic source of the Cenozoic volcanic rocks through an integrated research of volcanic rocks and their sources. 2 analysis of TM images suggests the Tuoyun basin is a basin with a volcano group instead of a simple volcano-tectonic basin. We found several volcanic craters and cone, and detected three such craters. 3 systematic reseach of volcanic sections and collection of samples both of volcanic rocks and xenoliths, the later includes peridotite, granulite, gneiss and variety of megacrysts. This is propitious to our further research at this rigion. We would like to point that we collected some peridotite large than 20cm in diameter. It could used to variety of analysis and end the history without mantle chemistry records in the region. 4 we got a U-Pb SHRIMP age of 3.87 Ma for the Kangxiwa basalt.It is the youngest record of U-Pb SHRIMP age in China and provide a chronology restriction for last uplifting of Tibet plateau. 5 the investigation of alkali syenite-synogranite in Taxkogan suggests that the origin of Parmir syntex is related to the Cenozoic magmatism.

本项目立足于从火山岩属性和深源捕掳体反演源区成分与结构两个途径，利用火山岩综合研究成果对地幔源区进行了初步反演，提出源区经受过强烈钾质交代的观点；对重点工作区TM图像进行了初步解译，新发现若干了火山口，并对其中三个火山口作了实地查验，为进一步全面深入开展该区的火山地质学及相关科学问题打下了良好基础，认为托云盆地是一个火山群，而不是一个单一的火山构造盆地；系统测制了火山岩剖面，新采集了一批重要的火山岩和深源岩石捕虏体样品，为下一步工作打下基础，特别是采集到了直径打20cm的幔源橄榄岩包体，可用于各种测试，将可以结束西部造山带没有地幔岩化学分析结果的历史；对康西瓦玄武岩进行了测年分析，取得了我国目前最年轻的锆石U-Pb SHRIMP年龄，对青藏高原挽近地质时期的隆升提供了年代学约束；对帕米尔东缘塔什库尔干碱性岩体的动力学意义进行了探讨，提出青藏高原西部构造结的形成与岩浆活动有关的观点。

This study shows that there are 4 kinds of volcanic facies in deep volcanics in north Songliao Basin: eruptive facies, overflow facies, volcanic vent facies and volcanic sedimentary facies. There are 4 volcanic eruption cycles: Huoshiling period, Shahezi period, Yingchengzi period and Quantou period. There are 4 structural evolution stages: north-south accumulation, west-east subduction, uplift mantle and thin crust, alternative open and close. There are 4 kinds of pool-forming patterns:(1) pattern with the migration along the unconformity and fault to the near crater;(2) pattern with the migration along unconformity and fault to the rift margin;(3) pattern with the migration along unconformity, fault and fracture to the source rock;(4) pattern with the migration of the deep gas along the deep and large fault to the volcanic trap.

研究认为，松辽盆地北部深层火山岩主要存在四种火山岩相：即爆发相、溢流相、火山通道相、火山沉积相，划分为四个火山喷发旋回：即火石岭期、沙河子期、营城子期、泉头期，经历了四个构造演化过程：即南北夹攻、东西俯冲、幔隆壳薄、开合交替，具有四种成藏模式：即沿不整合面和断层运移至近火山口处火山岩圈闭聚集成藏模式、沿不整合面和断层砂岩疏导层运移至断陷边部火山岩圈闭聚集成藏模式、沿不整合面及断层、裂缝运移至源岩区内凹中隆火山岩圈闭聚集成藏模式、深部无机成因天然气沿深大断裂运移至火山岩圈闭聚集成藏模式。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。