脉岩

However, it is unsubstantial for the investigation on chorology and geochemisty, and dissimilar for the research on petrogenesis and tectonic setting. Therefore, based on the isotopic chorology, petrochemistry, geochemisty and Sr, Nd, Pb isotope, the Ph.

山东地区中生代基性脉岩特别发育，这些幔源基性岩脉充填张性裂隙，是大陆地壳拉张的标志；另外，山东地区也存在大量拉张背景下的燕山期火山岩和碱性岩。

Between east and west, the mineralization in subalkalic intrusive complex is different. In the west, the veins are chiefly quartz veins, quartz veinlets and network veins, the wall rocks are mainly syenite and quartz monzonite. In the east, the fine quartz network veins, altered kata-rocks, alkali-syenite and syenite are dominant.

成矿作用在偏碱性侵入杂岩体的东部与西部有所不同，西部多以石英脉、石英细脉、网脉型为主，围岩以正长岩、石英二长岩为主；东部则多为石英细网脉和破碎蚀变岩型，围岩主要是碱长正长岩、正长岩。

Na-rich rocks include albitite ,arfvedsonite-bearing albitite dyke,arfvedsonite dyke,and arfvedsonite-bearing .

富钠岩石包括富钠长石岩、含钠闪石钠长岩脉、钠闪石岩脉及钠闪石碳酸岩脉和钠闪石化蚀变白云岩。

Author discussed geological characters of vein rock and co-relation with auriferous mineralization, and indirectly concluded the relationship of auriferous ore and rock body.

从岩石学、石化学、量元素、位素等方面讨论了脉岩的地质特征及其与金矿化的关系，可间接推出金矿与岩体的关系。

The time sequence of the Permian LIP development is as follows: Wajilitag layered rock mass→brecciated mica-olivine pyroxenite pipe→ basalt of Kupukuciman formation(278-292 Ma)→basalt of Kaipaicileike formation (272-288 Ma)→diabase and ultrabasic dikes→ syenite(277 Ma).

大火成岩省发育具有如下的时间序列：瓦吉里塔格地区的层状岩体→隐爆角砾云母橄辉岩岩筒→库普库兹曼组玄武岩(278×10^6~292×10^6a)→开派兹雷克组玄武岩(272×10^6~288×10^6a)→辉绿岩脉、超基性岩脉→正长岩(277×10^6a)。

These dikes are temporally and spatially associated with the gold deposit,and they have the same Pb isotopic compositions,which suggest the comagmatic activities in the same tectonic background.

区内脉岩与金矿在时空上密切伴生，Pb同位素组成接近，应属于同一构造同源岩浆活动的产物。结合前人C-H-O-流体包裹体研究成果，表明胶东金矿化中有幔源流体参与的成分。

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。

From the fields of regional crust-mantle structure, metallogentic settings, history of tectonic-magmatic activity, distribution of high antimony anomaly, characteristics of deposit, origin of ore-forming materials (including Sb, C, Si, S, solution and associated elements), black dikes, the relation of deposit and mantle metasomatism fluid is expounded by means of geology and geophysics. Xikuangshan antimony deposit is proved to be a typical vein deposit formed by mantle metasomatism fluid. On the basis of this knowledge, the prospecting criteria of blind orebody of the deposit are given as follows: extensive structuer which indicating the activities of mantle metasomatism fluid, change of host rocks (especially exsisting shale barrier bed), silication and carbonization alteration.

文中对地幔交代流体组成、性质、活动特点及其成岩、成矿作用作了综述与探讨；从锡矿山区域壳幔结构和成矿背景、地质构造-岩浆活动史、高锑地球化学场结构分析、矿床特征、成矿物质(包括Sb、C、Si、S、流体及伴生元素)、与成矿有时空联系的暗色脉岩等方面入手，利用地质、地球物理、地球化学手段多方面论述了矿床与地幔交代流体活动的关系，论证了锡矿山超大型锑矿的地幔交代流体成因，并以此为基础提出盲矿体地质找矿标志：即指示地幔交代流体活动的构造，尤其是具有成矿元素和碱质异常、热液蚀变的断裂构造；有利的岩石物理化学性质；硅化、碳酸盐化围岩蚀变等。

It can be inferred that these dikes are the products of primary or near-primary magmas.

推测这些脉岩是原生或近原生岩浆固结的产物。

Petrologic and geochemical investigations of mafic dikes in detail were concentrated in north Gangdong from southeast China so far, a few half-backed study on mafic dikes of south Hainan and coastal belt of Fujian and southeast Hunan and ore region of some hydrothermal deposits, so systemically and large area investigations of mafic dikes from southeast China is still few and need to undertake in the future.

由于出露面积的关系，岩脉或岩脉群往往容易被人忽略，直到最近五年来中国东部中新生代基性岩脉的地球动力学意义才引起地质学者的关注，甚至有些学者指出中国东部中生代基性岩脉的研究可以填补国际上对此方面的空白。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。