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- And there were only a very few aftershocks in the conductive lower crust. 因此;无论从竖向分层还是从横向非均匀性上看;唐山主震及其大多数余震都与高阻上地壳密切相关.
- In general, the composition of lower crust is close to basalt and the composition of upper crust is similar to granite. 一般来说,下地壳的成分接近于玄武岩,而上地壳的物质成分与花岗岩相似。
- The metallogenic source material comes from the upper mantle and the lower crust. 主要成矿时代为晚石炭世-早二叠世。
- When, where, how and why does the lower crust of the Qinghai-Tibet plateau flow in the disintegrated lithosphere? 解体的青藏高原岩石圈下地壳何时、何处、如何和为何流动;
- It is postulated that a high conductive body exists in the lower crust or upper mantle. 据此推测在地壳下部或地幔上部存在一高导体。
- By using 3-D gravity forward calculation,we obtained the deep gravity anomalies of Tai-wan from its Bouguer anomaly. Its depth corresponds to the lower crust. 经过三维重力正演计算,我们从台湾的布格重力异常中求得了深部重力异常,其深度相当于地壳下层。
- The magma of porphyritic moyite-monzogranite series in the middle stage mainly originated from the lower crust, being the product of collision-orogeny. 中期似斑状钾长花岗岩-二长花岗岩系列岩浆来源于下地壳,是碰撞造山作用的产物;
- Pb isotopic data indicate that ore-forming material came from upper mantle or lower crust and went into Archaeozoic crystalline basement 1900Ma ago. 铅同位素表明成矿物质来自上地幔或下地壳,大约在1900Ma从源区分离出来进入太古宙结晶基底。
- Shankland, T.J., and Ander, M.E., 1983.Electrical conductivity, temperature, and fluids in the lower crust, J.Geophys.Res., 88, 9475-9484. 石应骏,刘国栋,吴庆耀,王家映,王华俊,王光锷,吴乃爵,1985.;大地电磁测深法教程,地震出版社,中国北京,271页。
- If the squeezing model were correct, he says, one would expect higher temperatures in the lower crust in order for it to be "squeezable. 如果挤压模型是正确的话,他说,那么深部地壳需要有更高的温度使得它更具有可塑性。
- Zircon geochronology and geochemistry of mafic xenoliths from Liaoning kimberlites:Track the early evolution of the lower crust, North China Craton. 辽宁金伯利岩变基性岩石捕虏体地球化学及锆石年代学: 示踪华北下地壳早期演化。
- The velocity structure features of sediment, basement, upper crust, lower crust, Conrad and Moho interfaces were analyzed. 分析了沉积层、基底、上地壳、康腊面、下地壳和莫霍面的特征。
- Volcanic lavas of the Yixian Formation in western Liaoning province,China:Products of lower crust delamination or magma mixing? 辽西义县组火山岩:拆沉作用还是岩浆混合作用的产物?
- The eclogite produced from the subducted mafic lower crust of the Yangtze continental plate is a new finding within the Luotian dome in northern Dabie Mountains. 摘要在“罗田穹隆”中发现了下地壳俯冲成因榴辉岩.榴辉岩呈透镜状或板状产于含石榴子石条带状片麻岩中。
- H and O isotope compositions of ores show the polygenetic origin of ore-forming solution;and Sr and Pb isotope compositions indicate the mantle and lower crust source. 矿石氢氧同位素组成显示出成矿溶液具备多成因的特点;
- XIONG Xiong,HSU Hou-Tze.Undulation of Moho and ductile flow of lower crust induced by mantle flow.Acta Geodaetica et Cartographica Sinica(in Chinese),2000,29(Supp.):21-25. [25]熊熊;许厚泽.;地幔对流诱发的莫霍面起伏与下地壳塑性流动
- In terms of the multi-layer tectonic model, they are a manifestation ofthe plastic-flow network systems in the lower lithosphere, including the lower crust andthe mantle lid. 根据多层构造模型,这些地震网络系统实际上是岩石圈下层(含下地壳和岩石圈地幔)塑性流动网络的一种显示。
- One is the effect of quick stretching of lithosphere, upwelling and temperature raising of upper mantle, the other is result of the flexibility discrepancy among upper, lower crust and lithosphere under crust during the lithosphere cooling. 该运动以及渤海湾盆地在伸展裂陷阶段的多次构造运动说明渤海湾盆地呈现出幕式沉降过程,东营运动则具有更重要的动力学意义。
- Their lead isotopic values are much higher than those of the Archean metamorphic rocks of the Sanggan group in this area, and located between the two lead growth curves of upper mantle and lower crust. 其三组铅同位素比值明显高于本区太古界桑干群变质岩,并位于上地幔和下地壳铅增长线之间。
- The Tongde granulites were probably formed at an active continental margin without geochemistry of WPB.The depletion of Rb-Th and Nb-Ta indicates that the primitive magma of the Tongde granulites was contaminated by the lower crust. Rb-Th和Nb-Ta亏损的共存,指示了同德麻粒岩的原始岩浆曾受到古老下地壳物质的混染。