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.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1992年第1期109-116,共8页
Journal of Lanzhou University(Natural Sciences)
关键词
侵入岩
原生构造
流线
流面
节理
intrusive body
flow line
flow plane
primary joints
boundary condition
laminellar flow
eddy current
regional tectonics
