查询词典 granitoid

Also, there is no formula can be used to calculate errors of these parameters.Based on above reasons, the purposes of the research are to build a reliable geochronological framework of Paleozoic granitoid in study area, to distinguish their genetic types and tectonic settings, and to analyses their orogenic response; to derive a set of formulas for calculating errors of the paramers mentioned above; to ascertain if North Qaidam belongs to North China Block or Yangtze Block.

基于上述存在的问题，本项研究的目的是：建立研究区古生代花岗岩类精确的年代学格架，判别其成因类型和构造环境，分析其造山响应：推演出一套适用于Sr、Nd同位素初始比值和Nd同位素模式年龄等重要示踪参数误差计算的公式；确定柴北缘地区大地构造属性(华北板块还是扬子板块？)。

Granitoid ; time ; Sawuer Mountain ; Xinjiang

花岗岩类；时代；萨吾尔山；新疆

Based on the previous geological work, a large number of granitoid samples are carried on the Sm-Nd isotopic analysis. The results show that the εNd values of these granitoids occurred in Beishan Mountain area range from-16. 39 to +10. 89, some of which are characterized by the positive εNd value. It suggests that the crustal growth existed during Phanozoic in Beishan Mountain area, just like other regions in the CAOB.

本文在以往工作基础上，通过大量的Nd同位素分析，发现北山地区花岗岩类的εNd值变化于-16.39～+7.85，不少花岗岩类具正εNd值，说明本区与中亚造山带上其他地区一样，在显生宙存在大规模的地壳生长。

Studies show that regional granitoid of late Triassic, late Jurassic, middle period of early Cretaceous and late period of e arly Cretaceous were formed successively in different stages of interactions of the Yangtze Plate, the North China Craton and the Pacific plate.

研究认为，胶东地区晚三叠世(230～200Ma)、晚侏罗世(160～140Ma)、早白垩世中期(130～125Ma)、早白垩世晚期(120～100Ma)花岗质岩石可以与扬子板块、华北板块、太平洋板块相互作用的不同阶段相对应。

These dilatation veins are the ultramafic—mafic intrusive sheets in early stage, which occurred the strong boudinages and the shearing rotation forming θ、Φ、δtype porphyroclasts generally, as the series different size deformation zones; the features of the leucocratic felsic veins in middle stage; the pink granitoid veins in later stage, show a gneisses evolution process from the deep tectonic facies to the middle tectonic facies.

这些扩张脉体，早期阶段为超镁铁质—镁铁质侵入岩席，受后期构造改造岩席发生强烈石香肠化或受剪切发生旋转，呈θ、Φ、δ碎斑系，总体构成一系列规模不等的变形带；中期阶段以发育淡色长英质脉体为特征；晚期阶段为肉红色花岗质脉体，反映出片麻岩由深构造相向中浅构造相变化的过程。

Bassed on many kinds of characteristics of the alkaligranite, the paper establishes a complex genetic model of A-type granite in wulungu alkali-granite, that is" activity of mantal material+partial melting of hydrous-absent saclic source rock+differentiation of granitoid magma+tensional geological envioment".

综合本区花岗岩的各种特征，本文首次提出了乌伦古富碱花岗岩带中A型花岗岩的&地幔物质活动+脱水的硅铝质源岩部分熔融+花岗质岩浆分异作用+张性地质环境&的复合成因模式。

The high-grade metamorphic terrain of Hengshan located at the hinderland of North China Carton in northern part of Shanxi province, China, is a middle-lower crustal transition area of the typical continental crustal profiles of the Wutaishan—Hengshan—Datong—Jining of the early Precambrian etamorphic terrain in China.The Hengshan gneisses of the amphibolite—granulite facieses metamorphic terrain consist of the TTG gneisses and the horizontal adding mantle materials. The Supracrustal rocks in this area are composed of the mafic volcanic rocks and sedimentary rocks. The plenty of granitoid magma activities are the result of anatexes.

中文题名恒山中深变质岩区构造样式副题名外文题名 Tectonic styles of the high-grade metamorphic terrain of Hengshan 论文作者苗培森导师宋鸿林教授学科专业构造地质学研究领域\研究方向学位级别博士学位授予单位中国地质大学学位授予日期2001 论文页码总数88页关键词中深变质岩区构造地质恒山区域构造地质馆藏号BSLW /2003 /P548 /4 位于华北克拉通近中部的恒山中深变质岩区，亦即恒山高级变质岩区，是从五台山—恒山—大同—内蒙集宁这一浅变质岩区至中深变质岩区的我国早前寒武纪典型大陆地壳剖面代表中下地壳过渡带的地区。

The 40Ar/39Ar geochronologic study indicates that with the ratio 40Ar/39Ar in atmosphere which changes with time,the time and strength of degassing of the earth can be probed,and that the 40Ar/39Ar dating method can help researchers study not only crust mantle evolution and the history of magma dynamics during the cooling process and granitoid emplacing, but also the hydrothermal ore deposit dating.

研究表明：可以通过大气中40Ar/39Ar比值随时间的变化窥探地球去气作用的时间和强度；40Ar/39Ar法不仅有助于研究岩浆冷却过程和花岗岩侵位机制等岩浆动力学的历史和壳幔演化，而且对研究热液成矿年龄也是很有效方法之一；在一定的地质条件下，沉积地层时代越老，40Ar/39Ar值越高；当今40Ar/39Ar年代法已为全球环境演变研究提供了一种强有力的工具。

Accompanying the Jungar plate subdueted dewnwards along the northwest edge of Siberian eraton, the volatile-rich felsie biotite diorite batholiths and a lot of fracture-controlled quartz diorite vein intruded the are-back basin, Au preferently distributed within the disseminated magmatic sulfide during granitoid melt crystallization

阶段Ⅰ。华力西晚期伴随着准噶尔板块向北部西伯利亚板块的强烈俯冲，在额尔齐斯弧后盆地形成偏中性富含挥发份深源黑云英闪侵入岩及大量明显受构造控制的石英闪长岩脉，Au在岩浆结晶-分异演化过程优先在花岗岩中呈浸染状分布的岩浆碱化物中相对富集

Ma Changqian%Li Zhichang%Ehlers C%Yang Kunguang,Wang Renjing A post- collisional magmatic plumbing system: Mesozoic granitoid plutons from the Dabieshan high- pressure and ultrahigh- pressure metamorphic zone, east- central China 10.1016/S0024-4937(98)00043-7 LITHOS , 1998,1-4

徐树桐%刘贻灿%苏文%吴维平%江来利%王汝成大别山超高压变质带面理化榴辉岩中变形石榴石的几何学和运动学特征及其大地构造意义岩石学报， 1999，3

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。