摘要
水城断陷属滇黔桂裂谷的次一级构造单元，在大地构造演化、岩相古地理、对菱铁矿及铅锌矿等矿产的成矿控制方面均具有十分重要的意义。水城断陷在伸展期的显著特点是不对称变形。垭都—蟒洞断裂始于都匀运动，其伸展模式是以该断层为主拆离断层的单剪模式。水城断陷的演化可分为早期裂陷、中期强烈沉陷、后期基性岩浆喷溢、晚期封闭消亡和燕山期构造反转五个阶段。
As a second-order tectonic unit of Yunnan-Guizhou-Guangxi Rift Valley,Shuicheng fault subsidence is significantly important in the tectonic evolution,the distribution of lithofacies and palaeogeography,and the mineralizing control of siderite and lead-zine depostits.It is distinctly characterized by unsymmetrical deformation in the extensional period.Yadu-Mangdong fracture was initiated from Duyun Movement,and its extensional type is a single shear model with the fault as its main detachment.The evolution of Shuicheng fault subsidence can be divided into five stages:early stage of taphrogeny,middle stage of strong depression,stage of basaltic magma effusion,late stage of closure and consumption,and Yanshan stage of tectonic inversion.
出处
《贵州工业大学学报（自然科学版）》
CAS
1997年第2期1-6,共6页
Journal of Guizhou University of Technology(Natural Science Edition)
基金
八.五攻关项目
关键词
断陷
地质特征
构造演化
水城
断裂运动
fault subsidence
geological characteristics
tectonic evolution
Shuicheng
