论侵入岩原生构造的形成机制及其分类问题  

On the Mechanisrm and Classification of the Primary Structure of Intrusive Body

作　　者：陶明信[1] 

机构地区：[1]中国科学院兰州地质研究所,兰州730000

出　　处：《兰州大学学报（自然科学版）》1992年第1期109-116,共8页Journal of Lanzhou University(Natural Sciences)

摘　　要：本文讨论了侵入岩原生流动构造形成的方式、动力条件和边界条件;分析了不同方式动力作用下原生节理及褶皱的组合图案及其力学性质.研究表明:边界条件对岩浆流动方式和流动构造的特征起重要作用;构造运动往往是原生构造形成的主要动力来源,动力方式不同,原生节理的排列图案也不同.鉴于 H·Cloos 的分类方案不完善,本文提出了新的方案:A.造山期—区域类型;B.非造山期—局部类型.This paper discusses the ways,dynamic conditions and boundary conditions of forming the primary strueture of intrusive body,and analyzesthe pattern of composition and the mechanical nature of the primary jointsand the folds influenced by the different forces.It shows that the boundarycondition plays an important part in affecting of magma and the featureof flow structure In generl,the tectonic movement is the main sourceof the dynamic force which formed the primary structure.The patternsof primary joints will differ with different forms at the dynamic force,As H.Cloos's classification is not good enough,a new classification ispresented in this paper:A.Orogenic period—regional type;B.Anorogenicperiod—local type.

关 键 词：侵入岩 原生构造 流线 流面 节理 

分 类 号：P588.12[天文地球—岩石学]