摘要
米仓山地区构造变形序列和构造沉积、岩浆、变质同步事件记录了五大构造发展阶段演化历史。克拉通结晶基底的形成与古裂陷开合构造有关，褶皱基底形成于扬子古板块活动大陆边缘环境，澄江期基性超基性、碱性、中酸性侵入岩序列发育良好，与古大陆裂谷活动有关，克拉通沉积盖层形成于被动大陆边缘，中新生代构造格局为大型推覆—滑脱构造。
There are five tectonic evolutional stages based on the deformational sequences and synchronous events of tectono-sedimentation,tectono-magmatism and tectono-metamorphism in Micangshan area.The formation of crystalline basement of craton is related to the opening and closing of palaeo-rift.The folded basement formed in the active continental margin of Yangtze plaeo-plate and well developed intrusive rock sequence of basic-ultrabasic,alkali and intermediateacid rocks in Chengjiang period were related to palaeo-continental rift-vallay environment.The craton sedimentary stratum were formed in passive continental margin.The large nappe-decollement tectonics formed in Mesozoic-Cenozoic era.
出处
《矿物岩石》
CAS
CSCD
北大核心
1997年第S1期110-116,共7页
Mineralogy and Petrology
关键词
地质事件
变形序列
构造演化
米仓山
geological event deformational sequence teconic evolution Micangshan
