岩石学的

Peraluminous grarfites in Tibet occurred in a stage of collision between two continental crustal plates and the magma originated from anatexis of the upper crust.

喜马拉雅过铝花岗岩是陆内俯冲的岩石学记录，而冈底斯带过铝花岗岩更可能是特提斯洋壳北向俯冲的岩石学响应。

By summing up the cyclicity, rock association and occurrence of volcanic rocks with their overlying and underlying contact relations and forming environment, and concerning the research results of isotope chronology and biostratigraphy, the Yixian formation of the working area may be subdivided into four members.

综合火山岩的旋回性特徵，岩石组合、岩石产出特徵，不同岩石组合的上、下接触关系和岩石形成环境的分析结果，结合同位素年代学及生物地层学的研究成果，区内义县组被划分成了4个岩性段。

This thesis analyzed the basic geological characteristics, petrology, mineral deposit geology, litho geochemistry, and deposit geochemistry of the copper deposit, acquired the following results:(1) According to the metamorphic grade and the metamorphic types of the rocks, suggesting that the mixed granite, granitic migmatite, plagioclase gneiss and hornblende gneiss of the first lithologic member and the second lithologic member in the first sub-formation of Aerbishimaibulake Formation in upper silurian-lower Devonian series belong to Xingxingxia group in proterozoic.

本文对该矿床基础地质特征和岩石学、矿床学、岩石地球化学以及矿床地球化学等方面进行研究，取得了以下熟悉：(1)根据岩石变质程度和变质类型，初步提出矿区上志留-下泥盆统阿尔彼什麦布拉克组第一亚组的第一岩性段和第二岩性段的混合花岗岩、花岗质混合岩以及斜长片麻岩、角闪片麻岩应回为元古界星星峡群。

Petrographically and mineralogically similar rocks quite often have different concentrations of radioactive elements.

岩石学矿物学上类似的岩石，其放射性元素丰度却往往有所不同。

On the basis of the retrospective exploring of the formation and development of modern petrology,this paper discusses some dialectical problem s on the study of modern petrology systematically,the contents include scientific methodology and epistemology.

本文在回顾现代岩石学形成与发展的基础上，系统地探讨了现代岩石学研究中的若干辩证问题，内容涉及科学认识论和方法论两大主题。

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。

Through a detailed field surveying of Fenghuangshan section of Chaobei area and systematic studies on petrology,petrography and sedimentology,especially on microfacies ,analyzed paleogeographic characteristics and depositional environment.

通过对安徽巢北凤凰山剖面进行详细的野外测量和系统的岩石学、岩相学、沉积学的研究，尤其是进行岩石微相研究，分析其古地理特征及沉积环境。

A detailed petrologic and mineralogic study and a forming condition calculation have been carried out on the two types of enclaves.

对这两类岩石包体进行了详细的岩石学和矿物学研究，并计算了各类岩石包体的形成条件。

Studies of petrology and petrochemistry indicate that such suit of volcanic rocks dominated by lattite belongs to shoshonite series to potassic alkali basalt series. Considering the stability of rocks and their associations, gentle stratum occurrence, fresh degree of rocks and comparatively clarity of horizons. this potassic volcanic stratum distributed over the Sailipu area is named as Sailipu Formation, and the age of which is early middle Pleistocene of Quaternary.

岩石学、岩石化学研究表明，这套火山岩是以安粗质熔岩为主的钾玄岩系列－钾质碱性玄武岩系列火山岩，岩石类型及岩石组合稳定，岩层产状平缓，岩石新鲜，层位相对清楚，故将其命名为赛利普组，属第四纪早－中更新世。

The chemical-petrographic types of these meteorites are presented below.Six are unequilibrated ordinary chondrites,including three H3 and three L3;92 meteorites are equilibrated ordinary chondrites,including 24 H-group(13 H4,10 H5,1 H6),64 L-group(2 L4,44 L5,18 L6) and 4 LL-group(3 LL4,1 LL5);the other two belong to stone-iron meteorites.In 6 unequilibrated ordinary chondrites,chondrules are well-shaped,and olivine and low-Ca pyroxene are commonly zoned and have wide ranges of composition.The olivine and low-Ca pyroxene in the other 92 equilibrated ordinary chondrites have similar composition,respectively,and to some degree it reflected thermodynamics equilibration in olivine and lowCa pyroxene.

并根据矿物-岩石学特征，划分了它们的化学-岩石类型：6块属于非平衡型普通球粒陨石(H3和L3群各3块)；92块属于平衡型普通球粒陨石，包括：H群24块(13块H4，10块H5，1块H6)，L群64块(2块L4，44块L5，18块L6)，LL群4块(3块LL4，1块LL5)；另外两块属于石-铁陨石。6块非平衡型普通球粒陨石保存了原始的岩石学和矿物化学特征，包括：清晰的球粒结构、橄榄石和低钙辉石具有明显的成分环带以及极不均一的化学组成等。92块平衡型普通球粒陨石中的橄榄石和低钙辉石显示出均一的化学组成，表明它们达到了一定的热力学平衡。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。