查询词典 isotopic

Isotopic data for several of these rock units indicate that the methane within the inferred gas hydrate occurrences originated from both microbial and thermogenic processes.

几个岩石样品的同位素分析数据表明甲烷的出现源自微生物和热成的作用。

Based on the regional tectonic evolution, combined with the high precision isotopic ages from this paper and other geologists, we have some new acquaintances as follows: 1 There has no Caledonian granite belt distributed in north margin of North China Craton. So, the traditional evolving model of North China Carton, which formed on this idea and the acquaintance about the collision of North China plate and Siberian plate, must be incorrect; 2 The age date show that the earliest magmatic activity began since late-Palaeozoic Permian, which is inconsistent with the previous idea that there were Caledonian and Hercynian active continental margin in the north of North China Craton and in the south Xingkai Massif. 3 the crust and lithosphere were thickened by the subduction and collision of Siberia plate and North China plate during Late Paleozoic. The magma is formed when the crust is heated and melts caused by thickened lithosphere delamination and caused the Asthenosphere upwelling. But only a little basaltic magma erupted, most magma underplate under the bottom of the crust. Thermal energy derived from basaltic magma underplating made the middle and lower crust melt partially and the late Permian-early Triassic granites is formed in large scale.

根据区域构造演化分析，并结合本文及他人高精度同位素年龄，我们对延边花岗岩形成的大地构造环境有了新的认识：1在华北地台北缘并不存在所谓的加里东花岗岩带，因此，建立在此之上的传统的华北地台北缘演化模式及有关西伯利亚板块与华北板块的碰撞拼合的认识也必然是不正确的；2华北地台北缘和兴凯地块南缘不存在加里东期和海西期花岗岩带，表明两地块边缘最早的花岗质岩浆活动始于晚古生代的二叠纪，即不存在传统观点所认为的加里东期或海西期活动陆缘；3晚古生代由于西伯利亚板块与华北板块的俯冲碰撞，致使地壳和岩石圈增厚，导致加厚岩石圈发生拆沉作用，使得软流圈上涌，加热地壳使之熔融形成岩浆，但玄武质岩浆少量喷出地表，大部分底侵于地壳底部，形成下地壳高密度的玄武质底侵层，玄武质岩浆底侵的热能引起中下地壳广泛部分熔融，形成大面积分布的晚二叠世—早三叠世花岗岩。

So brachiopods as indicators of original isotopic compositions of marine limestones is undoubtful.

因此从本论文的研究看，腕足化石作为碳酸盐岩原始氧、碳同位素研究的较为理想的样品不应受到怀疑。

Stable isotopic compositions of carbon and oxygen in marine carbonates formed during geological history has long ...

地质历史时期碳酸盐岩氧、碳同位素组成的研究是目前国际上同位素地球化学研究中的一项重大课题。

The application of sulfur isotope tracing involves the physical and chemical conditions, origin of ore-forming minerals, denudating degree of orebody, ore enriching position and genesis types of deposits. In the application, the geology of the hydrothermal deposit should be well understand to distinguish metallogenic epochs and judge the isotopic fractional equilibrium state, combined with the Ohmoto mode to study the factors possibly affecting hydrothermal fluid system.

在总结前人研究基础上，综述了硫同位素在热液成矿作用中成矿物理化学条件、成矿物质来源、矿体剥蚀程度、矿化富集部位、矿床成因类型等的示踪意义，认为硫同位素示踪应用须在了解热液矿床基础地质前提下，准确区分成矿期次，判别硫同位素分馏平衡状态，结合Ohmoto模式综合研究影响成矿热液体系的各种因素才可以赋予同位素准确的地质内涵。

Based on zircon SHRIMP U-Pb, Sm-Nd and Ar-Ar isotopic datings and trace elements data of zircon and whole rock of the mafic granulite from Huilanshan in Lotian doming, we concluded that the protolith of the mafic granulite shoud be the Neoproterozoic mafic rocks, the granulite facies metamorphism of this rock was occurred at 124.0?.

罗田穹隆惠兰山基性麻粒岩的锆石U-Pb、Sm-Nd和Ar-Ar定年及锆石和全岩微量元素地球化学工作证明该麻粒岩的原岩形成于晚元古代，其麻粒岩相变质作用发生在124.0？。

According to the isotopic dating,it was emplaced into the active continental margin in Permian,which was resulted from the eastward subduction of the Tethys sea.

结合同位素测年结果及其它地质事件，确定是在二叠纪侵位于活动陆缘，是区内古特提斯洋向东俯冲消减作用的产物。

In this his dissertation, the field geological work and modern analysis were finished on the Qulong ore-bearing porphyries. The mineralization chronology, petrology, element and isotopic geochemistry were studied on the porphyries. This dissertation also compare this work in Qulong ore-bearing porphyries with other ore-bearing porphyries in Gangdese belt, in order to probe into dynamical background and mineralization features of the ore belts in the condition of India-Eurasia collision.

在充分搜集、利用前人资料及成果的基础上，本论文力求以地球动力学和现代成矿理论为指导，采用先进的分析测试手段和野外地质工作相结合的方法，通过重点研究驱龙斑岩铜矿床的岩石学、同位素地球化学、常量与微量元素地球化学及成矿年代学，并与冈底斯其它斑岩矿床对比，探讨在印度—欧亚大陆碰撞条件下，冈底斯斑岩铜矿带的大陆动力学背景及成矿规律。

By using a super high-yielding hybrid rice combination Liangyoupeijiu, its male parent 9311, female parent Pei'ai 64S and a three-line hybrid rice combination Shanyou 63 as experimental materials, the techniques of an artificial reaction system for photosynthetic membrane, and 32Pi isotopic labeling and so on, were used to study the photochemical activities of the flag leaf sheathes for Liangyoupeijiu.

以超级杂交稻两优培九及其父本9311、母本培矮64S和三系杂交稻组合汕优63为研究材料，采用光合膜人工反应体系和32Pi同位素标记等技术，初步研究了超级杂交稻两优培九剑叶叶鞘的光化学活性。

The carbon, hydrogen and helium isotopic compositions of volatile components displayed the characteristics of the fluid dehydrated from subducting slab.

岩浆中富气富水，气相组分的碳、氢、氦同位素组成具有俯冲板块脱失流体的特征。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。