摘要
文章分析论述了广西下、中三叠统砾质岩类所在层位及其特征，并将其划分为水道砾岩、崩塌—滑塌砾岩、沉积混杂岩３种成因类型，探讨了形成环境及其意义，指出它们均是三叠纪时期构造作用的沉积表现。
The structures in Fongzichong lead-zinc orefield in Guangxi are controlled by Bobei-Cenxi fault zone. The NE striking structures formed in early phase are mainly of compression, and the NNE striking structures formed later are mainly of horizontal shear and also of compressive characteristics. The mineralization of this orefield relates to the extensional stress field over late Diwa stage. Through comprehensive analyses on the petrofabrics, limited strain measurement and joints, the author puts multiperiodic and complex history of the orefield's structural development in order.
出处
《广西地质》
1997年第3期1-6,共6页
Guangxi Geology
关键词
砾岩
沉积混杂岩
中三叠统
下三叠统
岩石成因
lead-zinc deposit, orefield structure, petrofabric, limited strain measurement, Guangxi
