岩石学的

Under the theory of regional metallogenic system, this paper, focusing on Gaize district in Tibet, conducted carefully research in geological structure, magma activity, geophysical anomaly, geochemical anomaly, gold-bearing geological bodies and gold occurrence state, association of gold with other related elements, characteristics of typical deposits, metallogenic age, metallogenic process, post-ore-forming destruction of deposits in Gaize district based on methods of geology, petrology, economic geology, genetic mineralogy, isotopic chronology, geophysical and geochemical prospecting, and remote sensing.

本论文以藏北改则地区为重点研究区，以区域成矿系统理论为指导，采用地质学、岩石学、矿床学、成因矿物学、同位素年代学以及物、化、遥相结合的方法，对改则地区的地质构造、岩浆活动、物化遥异常、各地质体的含金性及金的赋存状态、金与相关元素的组合特征、典型矿床特征、成矿时代、成矿过程及矿床形成后的破坏作用等进行了较详细的研究。

The characteristics of these rocks in petrology, petrochemistry ,trace element geochemistry and their mineralization are introduced in this paper.

文章论述了与铜矿化有关的中酸性浅成—超浅成侵入体的岩石学、岩石化学、微量元素特征，并阐述了该类型铜矿化的基本特

The paper about the studies on alteration-deformation rock mineralogy and geochemistry indicates from unaltered phyllite to ultramylonite, SiO〓, CaO increase, Al〓O〓, TiO〓, TFe, MgO, K〓O decrease, P〓O〓 and MnO〓 almost remains constant, with the deformation degree increase.

蚀变变形岩石学及地球化学研究表明，由未蚀变的千枚岩经糜棱岩到超糜棱岩，随着变形程度的提高，SiO〓、Na〓O含量逐渐增加，Al〓O〓、TiO〓、TFe、MgO、K〓O逐渐减少，而P〓O〓、MnO〓基本保持不变，岩石的密度也逐渐降低。

Though stating sandstone thin-section's clastic constituents of outcrop sandstones and core sandstones,collecting sandstones' clastic constituents datas from Jican1 core、Ji3 core、XijiD2 core and JiD6 core,it's judged to the roke type be detritus feldspar sandstone and feldspathic detritus sandstone of outcrop sandstones and core sandstones in studied layer, the mostly roke being detritus feldspar sandstone.

通过统计46块露头砂岩和13块西风井砂岩薄片的碎屑组分，结合收集的鸡参1井、鸡3井、新鸡D2井和鸡D6井9块砂岩碎屑组分含量数据，判断出研究目的层露头砂岩和岩芯砂岩的岩石类型为岩屑长石砂岩和长石岩屑砂岩，主要为岩屑长石砂岩，两种砂岩的岩石学特征基本一致。

The purpose of paper is to describe the petrology character of outcrop sandstones and core sandstones and judge their roke type, compare the similarities and differences of autogenetic mineral、diagenesis types、intergrowth sequence、diagenetic facies、diagenetic phase of outcrop sandstones and core sandstones, provide academic precondition condition for studying better reservoir in studied region.

本次论文的研究目的是描述露头砂岩和岩芯砂岩岩石学特征并判断其岩石类型，比较露头砂岩与岩芯砂岩在自生矿物、成岩作用类型、共生序列、成岩相、成岩阶段以及成岩流体演化方面的异同，为研究区有利储层的研究提供理论前提条件。

Field geological investigation, petrology and geochemistry study showed that three oil shale groups in Kazuo basin were developed in Member 1,2,3 of the Jiufotang Formation of Lower Cretaceous, the third oil shale group located in 3rd member have the greatest industrial significance. Oil shale always has the accompanying relationship with overlying sedimentary tuff or other tuffaceous strata.

野外地质调查和岩石学、地球化学研究表明：喀左盆地3个油页岩层群分别发育于下白垩统九佛堂组的一、二、三段，以位于三段的第三油页岩层群的工业意义最大；油页岩常与上覆沉凝灰岩或其它凝灰质岩石呈伴生关系。

Petrological and geochemical characteristics of alkali-rich porphyries suggest that magmas might not be generated from subducted oceanic slab, but likely from the base of thickened crust, corresponding to eclogite-facies.

富碱斑岩产出的地质背景及岩石学和地球化学特征表明，富碱斑岩并非起源于俯冲的大洋板片，而是源于加厚地壳的底部，源区为榴辉岩相岩石。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yan\'an formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yanan formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

The study on petrology, geochemistry and isotope geology indicates that there are the common resource and tectonic setting for the Kangbutiebao formation with metamorphic volcanic rocks and the granite plutons related to the main iron deposits.They are different facies from magma evolvement in late Silurian-early Devonian.

岩石学、岩石地球化学及同位素研究表明，康布铁堡组变质火山岩、与主要铁矿床有关的花岗岩具有同源、同构造环境特征，是晚志留世-早泥盆世岩浆演化的不同相。

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。