多岩石的

Based on the petrological and geochronological study of metamorphic complexes from the Grove Mountains, the following conclusions are reached.(1)Exsolution texture is widely found in clinopyroxene in mafic granulites. A peak metamorphic temperature of 850 C was obtained from the reintegrated compositions of exsolved clinopyroxene. The preservation of augite megacrysts suggests a single episode of high-grade metamorphism for the Grove Mountains.(2)The compositional comparison of garnet from pegmatites with that from country rocks demonstrates that garnet in pegmatites is of xenocryst origin, and late amphibolite facies metamorphism does not occur in this area.(3)The Pan-African charnockite and post-tectonic sheet-like granite were first recognized in East Antarctica. Their occurrences suggest a collisional orogeny during the Pan-African time.(4)The SHRIMP U-Pb zircon dating on various rock types indicates that the major metamorphism in the Grove Mountains occurs at c. 550 Ma, and the tectonothermal evolution terminated at c. 500 Ma. The Grenvillian granulite facies metamorphism did not develop in the studied area.(5)The Prydz belt, the second Pan-African suture within the Gondwana suppercontinent, was further comfirmed based on this study. The Gondwana suppercontinent was not formed by the simply juxtaposition of East and West Gondwana, but by the collision of several blocks during the Pan-African time.

本项目通过格罗夫山地区高级变质杂岩的变质岩石学和同位素年代学研究，获得如下重要认识：（1）发现辉石出溶结构，由此获得峰期变质温度为850 C，并根据火成普通辉石的识别确定该区只存在单相麻粒岩相变质；（2）通过伟晶岩中石榴石斑晶与围岩中石榴石的对比研究提出了石榴石的捕虏晶成因，进而确定该区不存在晚期角闪岩相变质作用；（3）在东南极首次识别出泛非期紫苏花岗岩和后构造层状花岗岩，为泛非构造热事件的碰撞造山成因提供了重要佐证；（4）对不同岩石类型的锆石SHRIMP定年精确地限定了格罗夫山地区主期变质作用发生于泛非期，～550 Ma，热事件结束于～500 Ma，年代学数据没有揭示在该区存在格林威尔期麻粒岩相变质作用的迹象；（5）进一步确认了东南极内部普里兹带的存在，它属于冈瓦纳超大陆内部的第二条泛非期缝合带，据此认为冈瓦纳超大陆并不是由东、西冈瓦纳陆块的简单拼合而成，而是多个不同块体拼合的结果。

Confirmation of high-pressure pelitic rocks in the north. The mineral assemblage of the early stage is gamet-Mg-rich chloritoid +phegite +quartz ±kyanite ±aragonite or gamet+Mg-rich chloritoid+phengite+paragonite+quartz, P-T conditions are 550±30℃ and 1.4～2.0GPa; the mineral assemblage of the late stage is muscovite +chlorite+quartz±albite, which undergone retrograde metamorphism of greenschist facies, P-T conditions are ＜550℃ and ＜0.6GPa.

确定北部高压变泥质岩石，早期矿物组合为石榴子石+富镁硬绿泥石+多硅白云母+石英±蓝晶石±文石或石榴子石+富镁硬绿泥石+多硅白云母+钠云母+石英，对应的温压条件为550±30℃和1.4～2.0GPa；晚期矿物组合为白云母+绿泥石+石英±钠长石，经受了绿片岩相的退变质作用，其温度小于550℃，压力低于0.6GPa。

The results indicate that the tempestite in the area has lots of rock types including clastic rocks, bioclastic limestones and volcaniclastic rocks. The cumulative probability plots have "high slope-multi-bouncing population-1 suspension population" pattern, multi segments pattern and "high slope 1 segment" pattern. The sedimentary structures include gutter cast, surface of scour, cut structure, graded bed, massive bedding, hummocky cross stratification, parallel bedding, ripples, contemporaneous deformation and Fugichnia. The grains distribution and sedimentary structures shier that the transportation medium is characterized by tractive current and gravity flow synchronously.

结果表明，该凹陷风暴沉积岩石类型丰富，包括各类碎屑岩、生物灰岩和火山碎屑岩粒度分布具有"高斜多跳悬式"、多段式和"高斜一段式"等多种样式沉积构造发育渠模、冲刷面、截切等底层面侵蚀构造和递变层理、块状层理、丘状层理、洼状层理、平行层理等构造，还发育有波痕和各种同生变形构造、生物逃逸构造等粒度分布和沉积构造反映出研究区兼有重力流和牵引流的水动力机制。

Diamonds were formed millions of years ago from carbon under extreme heat and pressure more than one hundred kilometers below the Earth's surface. They are found in volcanic "pipes" called kimberlite.

在数百万年之前，碳元素在地表面一百多千米之下的极度高温和压力下形成钻石，这些形成于地球深处的岩石由火山活动被带到地表或地球浅部，这种岩浆多以岩管状产出，因此俗称"管矿"。

New for Range Rover, revisions to the rock crawl program improve brake and traction control response times, helping to reduce the wheels rolling in an unintended direction when traversing boulders, and giving a more composed drive through rocky terrain.

新的揽胜，修订岩石检索程序改善制动和牵引力控制系统的响应时间，从而减少车轮滚动的方向时，意外穿越石块，并给予更多的驱动器组成，通过岩石地形。

It shows that the sedimentary facies are submarine fans deposited by gravity flow at the bathyal depth.

综合应用沉积岩石学、地质学等多学科理论，全面分析了F4层的岩石学性质、沉积构造特征、测井曲线特征、古生物特征等，认为F4层的沉积相为陆隆-半深海环境下重力流沉积的海底扇。

Finally, the GPSE strength criterion for rock is verified by polyaxial test data of brittle rocks. The strength criterion for rock can be widely used to brittle rocks and allows for a good description of the several effects of stresses mentioned above, nonlinear characteristics of strength and marked difference for tensile strength and compression strength.

最后，通过对不同种类岩石多轴试验结果的验证分析，表明该准则能够较为合理地描述上述4种效应，而且能够反映非线性强度特征和拉压强度的显著区别，可广泛地适用于各种性岩石。

When the underground water percolates through a soluble rock sequence along its fissure it will dissolve large amount of calcium carbonates and seep out from the sidewalls and the roof. Due to the changes in temperature and pressure, water evaporated and carbon dioxide escaped and the dissolved calcium carbonate in the water precipitated in various forms.

地下水沿着可溶性岩石和裂隙渗透，溶解了岩石中的较多的碳酸钙，通过洞顶或洞壁滴流出来，因为温度、压力的改变，水的蒸发，二氧化碳散失，使溶解在水中的碳酸钙沉淀下来形成各种形态。

On the basis of analyzing the blastingcharacteristics of rock at bench top in multi-row bench blasting, this paper puts forward a calculation model, deducces an approximate formula for calcualtion of reasonable stem length for multi-row bench blasting, which can be as reference for blasting design.

在分析台阶多排孔爆破时台阶顶部岩石爆破特点的基础上，提出了多排孔台阶爆破堵塞长度计算模型，从而推导出计算合理堵塞长度的近似公式，可供爆破设计时参考。

After many times of embedments and observations for upward rock deformation observation instrument , defects for upward rock deforma tion observation instrument during grouting and improvement are discussed .

摘 要：在进行多次岩石抬动变形观测装置的埋设和观测之后，对灌浆施工过程中，岩石抬动变形观测装置在实际中存在的缺陷及改进措施作了探讨。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了