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continental crust相关的网络例句

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However, the Nb/Ta ratios lower than chondrite value (~17) in eclogites are inconsistent with previously proposed Nb/Ta high in subducted oceanic crust to complement the mass balance of Nb and Ta in the evolution of continental crust.

柴北缘沙柳河、鱼卡河、锡铁山和胜利口的榴辉岩类样品的地球化学分析显示它们的原岩的主体是与洋壳有关的火山岩,其中包括岛弧拉斑玄武岩、洋岛火。。。

While (superscript 4) He is the decay product of uranium and thorium, mainly concentrated in the continental crust, and is approximately proportional to the heat flux of crust.

由於铀、钍元素在大陆地壳中富集,(上标 4) He通量与地壳热流呈正相关关系;同时(上标 3) He通量与地幔热流之间呈正相关。

This paper studies the granite growth, development and emplacement as well as their relations to the tectonic dynamic background and to reaction of ocean crust, continental crust and mantle. Thus, not only the contents of pluton study are enriched, but also new evidence for the tectonic evolution, plate kinematics and dynamics are obtained, indicating that the study of formation process and deformation reworking of plutons can provide more information on plate tectonic and continent dynamics, so they should be studied more.

本文研究了花岗岩体的成因、生长演化、形成定位及与构造动力学背景的关系,并注意与陆壳、洋壳、地幔三者之间相互作用的关系,这样,一方面丰富了花岗岩研究内容,提高了花岗岩研究程度;另一方面也对探索东秦岭地区大地构造演化及动力学等问题提供了新的证据和认识,表明在板块构造、大陆动力学研究方面,花岗岩体形成过程等方面的研究也能提供难得的信息,今后应注意加强研究。

The eight major research topics are :①understanding coremantle processes, by deep drilling into a large oceanic plateau in the Western Pacific;②detailed investigation of material circulation during greenhouse Earth, and the transition process from greenhouse to icehouse environments, by drilling Cretaceous to Cenozoic sediments in the Pacific,③understanding the process of continental crust formation by deep drilling into oceanic arc,④Understanding the process of oceanic lithosphere formation by deep drilling of the back arc spreading system,⑤understanding of continentoceanatmosphere linkage, by drilling in the marginal seas and continental slopes of Asia,⑥investigation of the carbon cycle and the deep biosphere in accretionary prisms,⑦investigation of the mechanism and cycles of great earthquakes, tectonics, and mass circulation in convergent plate margins,and ⑧biology of extreme microorganisms living in deep accretionary prism environment.Keywords : Japan IODP Drilling Scientific goals.

其八项研究目标为:①钻探西太平洋洋底高原,认识核—幔作用过程;②钻探太平洋白垩纪—新生代沉积物,详细研究地球温室期间的物质循环及从温室环境到冰室环境的转化过程;③钻探大洋岛弧,认识大陆地壳形成过程;④钻探扩张的弧后,认识洋壳岩石圈形成过程;⑤钻探亚洲边缘海及陆坡,认识陆壳—洋壳—大气圈关系;⑥调查增生楔中的碳循环及深部生物圈;⑦调查汇聚板块边缘大地震周期及形成机制、构造及物质循环;⑧研究生活于增生楔环境中极端微生物生物学。

The crustal nature of the northern continental shelf and upper slope of South China Sea is the continental crust.

南海中部和北部几乎包括了所有的海底地貌单元:既有从华南大陆向海区自然

The basal continental crust of Tarim-Tianshan area in Xinjiang consists of the continental nucleus, which is composed of grey gneisses, greenstones, and potass granites similar to charnockites, and its accretionary belts mainly of the early Proterozoic and partly the Middle Proterozoic.

塔里木-天山地区基底陆壳由太古宙灰色片麻岩、绿岩和可能是紫苏花岗岩的含钾花岗岩类组成的陆核及其古元古代和少量中元古代增生带组成。

In the process of intraplate convergence of continental lithosphere, parallel-layer detachment s commonly occur during the subduction of continental crust, owing to the multi-layer and multi-interface characteristics of the subcontinental lithosphere.

与洋陆俯冲关系不同,在板内汇聚过程中,大陆岩石圈固有的多圈层、多界面结构的特点,使得地块的俯冲变形伴有多圈层顺层拆离解耦的行为,使变形结构复杂化。

With the constraints from published paleopmagnetic data on motion rates of continental blocks prior to their collision, this work firstly proposed the ultra-fast subduction rate could assist the underthrust of low-density continental crust into mantle depth to some extents.

在综合古地磁和地球物理资料的基础上,本文首次提出快速俯冲过程是一种驱动陆壳进行俯冲的因素,在超高压变质带的形成过程中,快速俯冲过程可能起到了某种程度的驱动作用。

The report contains a Geographic Information Systems compilation of geophysical, geological, and tectonic data for the Circum-North Pacific. This area includes the Russian Far East, Alaska, the Canadian Cordillera, linking continental shelves, and adjacent oceans. This compilation can be used to: study the Mesozoic and Cenozoic collisional and accretionary tectonics that assembled this continental crust of this region; study the neotectonics of active and passive plate margins in this region; and construct and interpret geophysical, geologic, and tectonic models of the region.

报告对环北太平洋地球物理、地质和板块构造的数据进行了地理信息系统编辑,包括俄罗斯远东、阿拉斯加、加拿大山脉、以及相连的大陆架和海域,可用于研究中生代和新生代碰撞加积的板块,这个板块是由此区域的陆壳组合而成的,研究活跃与不活跃板块边缘的新板块构造,并且建立和解释此区域的地球物理、地质和构造模型。

Hengchun Ridge ; continental crust ; accretionary wedge ; arc continental collision

恒春海脊;陆壳;增生楔;弧陆碰撞

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