岩石

Based on isotopic ages and the cycle of magamtism, the ages of Yanbian granites can be subdivided into five periods:①late Permian granites (260-245Ma), the typical plutons are Liukesong and Liangbing plutons, and the main rock type include diorite-monzonitic-K syenogranites;②Triassic granites (225-200Ma), the typical plutons are Sandaogou, Chunyang, Qishiergedingzi, Dahuanggou, Naozhi, and Qinglinzi plutons, the main rock type include quartz dioritesgranodiorites-monzonitic-alkali granites;③early Jurassic granites (190-180Ma), which composed of quartz diorites-granodiorites - monzonitic ,and the typical plutons are Shimen, Miantian, Daxinggou and Yushuchuan rock;④Middle-Late Jurassic (170-150Ma), which composed of granodiorites- monzonitic- garnet-bearing muscovite granites, the typical plutons are Huangniling, Weizigou, Loutuoshan and Dongqing rock;⑤early Cretaceous (about 130Ma), the typical pluton is Zhongping pluton, and its rock type is paulite diorite.

另外，根据同位素年龄和岩石组合并考虑到岩浆的旋回性，将延边显生宙花岗岩进一步划分为五个期次：1。晚二叠世(260-245Ma)，代表性岩体为六棵松和亮兵，主体岩性为辉石闪长岩、二长花岗岩和钾长花岗岩；2。三叠世(225-200Ma)，代表性岩体为三道沟、春阳、七十二个顶子、大荒沟、闹枝、青林子，岩石组合为石英闪长岩—花岗闪长岩—二长花岗岩—碱长花岗岩，以花岗闪长岩和二长花岗岩为主；3。早侏罗世(190-180Ma)，石英闪长岩—花岗闪长岩—二长花岗岩组合，主体岩性为花岗闪长岩，代表性岩体有石门、棉田、大兴沟、榆树川等；4。中侏罗世(170-150Ma)，主体岩性为花岗闪长岩和含石榴石花岗岩，代表性岩体有黄泥岭、苇子沟、骆驼山、东清5。

We analyzed the tectonic differences and deep geodynamic characteristics based on the tomographic results, which show high velocity anomalies at the uppermost mantle beneath the northeast SCS, and depict the lithospheric mantle extension from South China continent to marginal sea. Because of the low temperature and thick lithosphere beneath the northeast SCS, it seems no magma intruded from mantle, so we inferred that the rift may only occur in the crust rather than extend to the upper mantle, which shows the nature of nonvolcanic continental margin.

结果表明：南海东北部表现出陆架地区的岩石层特性，属于华南大陆向海区的延伸，岩石层厚度较大，现今不存在大规模的地幔热流活动，推测大陆边缘张裂作用仅限于地壳内部而没有延伸进入上地幔，具有非火山型大陆边缘的深部特点。

In the khondalite series in Daqingshan area, Inner Mongolia, Di gneiss association is a independent lithostratigraphic unit characteristic of calcsilicate rocks overlying a Ga-Bi gneiss association and being overlain by a marble association.

在内蒙古大青山地区的孔兹岩系中，透辉片麻岩岩组以钙硅酸盐岩为特征的岩石组合作为一个独立的岩石地层单元产于榴云片麻岩岩组之上、大理岩岩组之下。

In the khondalite series in Daqingshan area, Inner Mongolia, Di gneiss association is a independent litho-stratigraphic unit characteristic of calc-silicate rocks overlying a Ga-Bi gneiss association and being overlain by a marble association.

在内蒙古大青山地区的孔兹岩系中，透辉片麻岩岩组以钙硅酸盐岩为特征的岩石组合作为一个独立的岩石地层单元产于榴云片麻岩岩组之上、大理岩岩组之下。

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。

Abundant peridotitic xenoliths had been found in the Dashihe Cenozoic basalts in Jiaohe of Jilin Province, northeastern China.

吉林省蛟河市境内大石河新生代玄武岩中含有丰富的地幔橄榄岩包体，详细的岩石学与矿物学研究显示，这些包体的主要岩石类型为尖晶石二辉橄榄岩-方辉橄榄岩，未发现石榴石橄榄岩。

Sanidinite (some have transformed to perthite) and quartz inclusions with radial cracks are often seen in the garnet of eclogite. The geothermal gradient of ＜10℃/km is recorded in the early stage mineral assemblage of high-pressure metapelitic rocks with relict aragonite. these features imply a possibility that there may be ultra-high-pressure rocks existed in Altun.

根据榴辉岩中石榴石常见透长石和石英包体，并有放射状裂纹的特征，以及高压变泥质岩石早期矿物组合温压条件记录的地温梯度小于10℃/km和残存文石等特征，不排除区内有超高压变质岩石存在的可能性。

The method utilizes petrographical information obtained from two-dimensional thin sections to stochastically reconstruct the 3D model of a stone sample by the theories and techniques of image processing and mathematic morphology.This paper compares quantitatively the reconstructed microstructures...

这种方法利用从二维薄片取得的岩相学图象信息，用图象处理理论技术和数学形态学的方法生成了岩石的三维模型，对重建的三维微观结构和实际砂岩的表面细微结构进行了定量比较，比较显示，这种重建方法得到的三维模型孔隙率与原始图象基本一致，其水平面/纵切面/横切面上的颗粒长径分布与实际岩石有较好的相关性。

Because of having some relationship with the bulk feature of inclusions, the rock features of this meteorite in petrology, petrologic chemistry, and meteorite matrix chemical compositions wre also studied.

宁强陨石全岩的特征（岩石学、岩石化学以及陨石基质的化学成份特征）由于与难熔包体总体特征有关也被给予研究。

In contrast, many geological, petrological and geochemical problems of H9 formation remain unsolved.

文中详细论述了这些火山岩石的结构构造、矿物成分和岩石化学成分，以及微量元素。

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。