片麻岩的

The conventional 40Ar/39Ar age of muscovite in high-pressure metamorphic orthogneiss, surrounding rocks of the Qinglongshan eclogite, is identical with its Rb-Sr and Sm-Nd ages.

作为东海青龙山榴辉岩围岩的高压变质的正片麻岩，其白云母的常规~(40)Ar/~(39)Ar年龄和Rb-Sr、Sm-Nd年龄一致，激光微区Ar同位素分析表明，白云母的Ar同位素分布也是均匀的。

The mantle-derived peridotite inclusions with protogranular texture and porphyroclastic textures;(2) the pyroxenite inclusions with cumulate texture; and (3) the granulite and gneisses with crystalloblastic textures.

辽西的深源岩石包体也有三种结构类型：①具有原生粒状结构、残碎斑结构的幔源橄榄岩类岩石包体；②具有堆晶结构的辉石岩类包体；③具有变晶结构的麻粒岩和片麻岩类岩石包体。

The feature of earth chemistry of volcanic rock in Xiangshan Group reflects that it belongs to the series of oceanic tholeiite in oceanic spreading tectonic environment.

结果 香山群的时代划归为中晚寒武世较合适；香山群主体是一套由板岩、细、粉砂岩和砂岩组成的浊积岩系，其砂岩类型主要是长石石英砂岩、细粒石英砂岩和粉砂质石英砂岩，前寒武纪变沉积岩和花岗片麻岩为主要碎屑来源和物源区组成；砂岩的岩石地球化学特征指示香山群属发育在被动大陆边缘斜坡环境中的沉积物，火山岩岩石地球化学特征反映其应属大洋扩张构造环境下的大洋拉斑玄武岩系列。

It has the metamorphic rock sight—"the Inartificial Gallery" which is black and white, devious and whirlabout and likes the reversal cloud-mist and rising sun, the granite vein injecting along the bedding of gneiss crossing the river-gorge—"the White Dragon Crossing River", nine veins apposing on the rock wall—"the Nine-dragon Wall","the Inartificial Wall " formed by the paragenesis of the level joint and the vertical joint, and the small and exquisite undercutting cave which is the wonder of the new tectonic movement.

有黑白相间、曲折盘旋，如云雾翻卷，似霞蔚蒸腾的变质岩景观――"天然画廊"，有沿片麻岩层理贯入的花岗岩脉，横跨河谷的"白龙过江"，有九条岩脉并列在岩壁之上的"九龙壁"，有水平节理与垂直节理巧妙共生而形成的"天然城墙"，有新构造运动遗迹――小巧玲珑的淘蚀洞穴。

Therefore, above-mentioned age dating together with previous chronologic data led us to conclude that the Sulu HP-UHP nappes have two basements: the Early-Middle Protrozoic (≥2400 Ma) basement in the N. Sulu and the Neoprotrozoic (700-800 Ma) basement in the S. Sulu. The basement ages in the N. Sulu together with its western part of the no-UHP metamorphic area (Laiyang-Penglai) are similar and named by the Jiao-Liao-Korea block belong to the NCP. Besides, the boundary between both of the S. Sulu UHP area and JLKB is along north Wulian and south Haiyangsuo.

北苏鲁超高压变质地区的花岗质片麻岩锆石SHRIMP U-Pb定年表明，变质基底的年龄是2400Ma（或＞2400Ma），并经历了1800～1700Ma和～200Ma的变质事件，研究表明苏鲁高压－超高压变质地体由2个不同时代变质基底组成，北苏鲁的变质基底属于北中国板块胶辽朝地块的一部分，形成时代比南苏鲁基底老得多，其与南苏鲁地块之间的界限位于五莲以北到海阳所以南一线。

The main tectonic features of the four stages mentioned above can be summarized as follows, gneissic basement and greenstone belt in the Archean, formation and rifting of ancient continental crust in the Transition, creation and disposal of the first supercontinent Columbia in the Paleoproterozoic-Mesoproterozoic, and the assembly and disassembly of the supercontinent Rodinea under plate tectonic framework in Neoproterozoic.

这四大阶段的主要构造面貌分别是：片麻岩基底和绿岩带盆地，古陆壳的形成与裂解，第一个超级大陆即哥伦比亚超大陆的形成与离散，板块构造体制下罗迪尼亚超大陆的汇聚与离散，反映了大陆岩石圈的形成和由低级向高级的演化，因而每一阶段都有不同于前一阶段的沉积建造、火成岩类型及组合、变质作用、构造样式、构造线方向、变形方式和成矿作用。

The U-Pb and Pb-Pb isotopic dating of zircons provided the ages of 447-462Ma representing the ages of peak granulitic metamorphism. The U-Pb dating of detrital zircons from aluminum-rich gneisses yielded older upper intercept ages which reflect the times of older materials derived from sourse rocks of the gneiss protoliths.

岩石中变质锆石的U-Pb及Pb-Pb同位素测定获得447-462Ma的年龄值，代表其麻粒岩相的变质作用时代，富铝片麻岩中含继承组分的锆石还获得较老的上交点年龄，它可能代表其沉积岩原岩源区的年龄。

The eclogites at western segment of Altyn Tagh tectonic belt occur as lens or boundins within quratz-feldspathic gniesses characterized by amphibolite-facies parageneses. It mainly experienced the prograde amphibolite-facies stage (P=6.06-8.70kb, t=615-690℃),peak eclogite-facies stage (P＞15kb,T=700-850℃), granulitic facies stage (P=11-14kb,T=750℃) and ampbiolite-facies stage (P=6.3-9.5kb,T=619-738℃) during decompression.

阿尔金构造带西段的榴辉岩呈透镜状产于长英质片麻岩中，它主要经历了进变质的角闪岩相(P=6.04-8.70Kb，T=615-690℃)、峰期的榴辉岩相(P＞15Kb，T=700-850℃)及减压过程中的麻粒岩相(P=11-14Kb，T=750℃)及角闪岩相(P=6.3-9.5，T=619-738℃)的变质作用，构成一个顺时针的PT轨迹。

It has the metamorphic rock sight—"the Inartificial Gallery" which is black and white, devious and whirlabout and likes the reversal cloud-mist and rising sun, the granite vein injecting along the bedding of gneiss crossing the river-gorge—"the White Dragon Crossing River", nine veins apposing on the rock wall—"the Nine-dragon Wall","the Inartificial Wall " formed by the paragenesis of the level joint and the vertical joint, and the small and exquisite undercutting cave which is the wonder of the new tectonic movement.

有黑白相间、曲折盘旋，如云雾翻卷，似霞蔚蒸腾的变质岩景观――&天然画廊&，有沿片麻岩层理贯入的花岗岩脉，横跨河谷的&白龙过江&，有九条岩脉并列在岩壁之上的&九龙壁&，有水平节理与垂直节理巧妙共生而形成的&天然城墙&，有新构造运动遗迹――小巧玲珑的淘蚀洞穴。

The rocks of early Proterozoic and Archaean contain the lower potassium feldspar and lead number in potassium feldspar is lower than 10% of lead in the whole rocks.

中文摘要：在中-酸性岩浆岩、碱性岩浆岩、片麻岩及混合岩等岩石类型中，钾长石是含铅最高的造岩矿物，其铅含量是全岩铅含量的2～10倍，云母类矿物铅含量的3～16倍，石英铅含量的6～32倍。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。