摘要
本文以广西龙水水政顶倾竖褶皱构造变形分析为基础,根据含金石英脉与非含金石英脉的变形差异,认为作用于岩层上的主剪切应力(σ_s)与主压缩应力(σ_p)随时间(t)的变化是导致岩层褶皱过程中石英脉多样性变形的主因;阐述了上述模型的动态应力场及其动力学过程;提出了构造变形的分解作用、水力压裂作用与裂开-愈合作用是石英脉形成的新构造机制。
On the basis of an analysis of tectonic deformation of the Shuizhengding vertical fold and dif-ference in deformation of auriferous or unauriferous quartz veins in the Longshui gold deposit, the author realizes that the diverse deformation types of quartz veins in the course of folding of strata were chiefly caused by the change of the principal shear stress and principal compressive stress acting on rock layers with time. He tries to elaborate the dynamic stress-field and process of dynamics and proposes a kind of new mechanism for the formation of quartz veins by deforma-tion partitioning, hydrofracturing and rupture healing.
出处
《地质论评》
CAS
CSCD
北大核心
1997年第1期78-84,共7页
Geological Review
关键词
金矿床
石英脉
含金
褶皱过程
构造机制
deformation partitioning, hydrofracturing, rupture healing, dynamic stress field , auriferous quartz vein
