查询词典 rock-bottom

This thesis studies the volcanic tectono-petrofacies, petrology, mineralogy, geochemistry, isotopic chronology, stratum and high-precision SHRIMP zircon U-Pb datings of the Mt.Yandangshan volcano-intrusive complex, and concludes that: Yandangshan volcanic rock units belong to high-K calc-alkaline acid rock associations, mainly ryholitic and trachytic dacitic in composition. They have A/CNK values of 0.9-1.2 (i.e., aluminium saturation and supersaturation), enriched LREE and LILEs and depleted HFSE. Their 8Eu values are 0.11-0.32, indicating a evident fractional evolution of plagioclase crystallization. Their ∑REE varied very limitedly,(87~Sr/(86)Sri ratios and eNd values are 0.7086～0.7095 and -10.20～-9.96 for volcanic rocks, and 0.7087~0.7095 and -7.6～6.92 for the central intrusive facies syenite, which means that all the igneous rocks from Mt. Yandangshan are evolutional products of magmas with the same source, and that they derived mainly from crust, but mixed with mantle components.

本文从火山构造岩相学、岩石学、矿物学、地球化学、同位素年代学、地层学等方面出发，同时结合高精度SHRIMP锆石U-Pb定年，对雁荡山火山岩进行了系统的研究，确定雁荡山火山岩为一套以流纹质和粗面英安质为主体的高钾钙碱性酸性岩石组合，A/CNK值集中在0.9～1.2之间，为铝饱和或铝过饱和类型；富轻稀土元素和大阳离子亲石元素、相对亏损高场强元素：负铕异常明显，δEu值为0.11～0.32，表明岩浆经历了以斜长石为主的强烈结晶分异作用：岩石样品的∑REE变化有限，火山岩样品的~(87Sr/~(86)Sr_i为0.7086～0.7095，εNd为-10.20～-9.96，中央侵入体石英正长岩~(87Sr/~(86)Sr_i为0.7087～0.7095，εNd为-7.6～-6.92，表明它们是同源岩浆分异演化的产物，物质来源主要为陆壳，但有地幔物质参与。

The results indicate that as the ERT has a advantage of being able to multi-directional imaging and monitor, on the basis of a analysis of resistivity images obtained at different directions, it is possible to characterize the spatial distribution patterns of the rock structure, and illustrate the anisotropic properties of the spatial distribution patterns in the rock resistivity changes during water saturation and desaturation processes.

结果表明，电阻率成像法在分析岩石裂隙介质的各向异性方面具有多方向成像和动态监测的优点，可以通过对不同方向上获得的电阻率图像的分析，提取出岩石沉积结构的空间分布模式，清晰地反映出岩石在饱水和排水过程中电阻率变化空间分布模式的各向异性特征。

According to the latest researches, there is a set of MesozoicT_3-J_(1+2 palaeo-foreland basin deposits in the deep-seated Songliao Basin, which are composed of detrital rock, coal and volcanic rock.

根据最新的研究成果，松辽盆地深层存在一套早中生代(T3-J1+2)含煤和火山岩的古前陆盆地沉积。

On the basis of the information obtained through field geological survey and indoor integrated petrological and petrochemical studies, it has been found that there is a clear and sharp pulsatory intrusive contact between various rock units of the rock body and a number of dark dioritic microinclusions are present. The rocks are characterized by a relatively low total REE content, relative enrichment in K, Rb, Ba and Th and relative depletion in Cr, Ti, Nb, Sr and P.

根据野外地质调查资料和室内的岩石学、岩石化学等特征的综合研究成果，发现该岩体各单元之间呈脉动式侵入接触，接触界线清晰，且含有较多暗色闪长质微粒包体；稀土总量较低，K、Rb、Ba、Th元素相对富集，Cr、Ti、Nb、 Sr、Zr、P元素相对亏损。

According to the unstable condition of the displaceable block and the breakage term of the stratified rock, this paper analyzed the stability of surrounding rock during the excavating process in different geological structures.

长江科学院监理公司，湖北武汉430030中文摘要：结合工程实例，基于块体的失稳条件和层状岩体的破坏条件，分析不同地质构造形态岩层下，隧洞开挖过程中围岩的稳定性。

As the caves where the rock with limestone and dolomitic limestone-based, water seepage and corrosion in the crevice under the rock an overall poor, the upper half soft, hard second half, in order to prevent cave broken Special cuts on each hit Jigen bolt or even tens of root reinforcement, and high-strength resin grouting to improve its integrity.

由于石窟所在岩体以灰岩和白云质灰岩为主，在裂隙渗水和腐蚀的作用下，岩体整体性较差，上半部较软，下半部较硬，为防止石窟破碎，特在每个切块上打了几根甚至几十根钢筋锚杆，并以高强度树脂灌浆，提高了其整体性。

Baishishan the top of the dolomite cap rock was formed 10 billion years ago the marine environment; crustal movement to make this piece of dolomitic marble produced more than two sets of vertical joints, in the long years of millions of years later, the weathering so that the vertical cracks expanding into a arrhizus rock column of Qifeng Li; Moreover, these columns, such as Lin Qifeng Li has just standing on a solid granite base, making them also another insurance Fenglin odd geological movement continues to be able to has been retained.

白石山上部的白云岩盖层形成于10亿年前的海洋环境；地壳运动使这块白云质大理岩产生了两组以上的垂直节理，在后来亿万年漫长的岁月里，风化作用使垂直裂隙不断扩大，岩层变成了根根柱立的奇峰；而且，这些柱立如林的奇峰又正好伫立在稳固的花岗岩基座上，使得这些又奇又险的峰林在不断的地质运动中能够被保留下来。

Based on a study of the magnetic fabric and rock deformation characteristics in combination with other data,it is inferred that the Dawangshan dynamometamorphic zone is resulted from superposition of multi-phase structural activities posterior to the intrusion and consolidation of magmatic rock in the Late Caledonian Period.

通过磁组构和岩石变形特征的研究并结合其他资料，推断出大王山动力变质带是在加里东晚期岩浆侵入成岩后，多期构造叠加作用的结果。

These have important academic and realistic value to study the connection between the coal and rock failure and EME, and to prevent and control the dynamic catastrophe of the coal and rock.

这对于搞清煤岩破坏与电磁辐射之间的关系，防治煤岩动力灾害具有重要的理论和实际价值。

Time-dependent deformation prediction based on hydro-mechanical coupling theory is important to slope evolution research. However, because preparation processes of most of landslides take place in erodent geochemical environment near the earth surface, slope rock mass deformation differs from the time-dependent response of the underground openings wall rock to excavation.

以流-固耦合等理论为基础对岩体进行时效变形预测，对于斜坡演化研究是重要的，但是，由于大多数滑坡的孕育都是在近地表的侵蚀性地球化学环境中进行的，与深埋地下空间的开挖问题存在明显区别。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。