摘要
塔里木盆地西南坳陷的形成演化，可以划分为５个主要阶段，即：新元古代统一古陆块的形成阶段；早古生代古陆块裂张、坳陷形成发展阶段；晚古生代坳陷变迁，西南坳陷东、西发展分异阶段；中生代内陆盆地的形成发展阶段；新生代大型滞后型前陆盆地形成发展阶段。从沉积和构造发育史分析，西南坳陷是一个新生代沉积占统治地位的山前坳陷。
Five major stages can be divided regarding formation and evolution of Southwest depression in Tarim basin,①formation of united paleolandmass in Late Proterozoic;②rifting of paleolandmass and subsequent forming and developing of depression in Early Palaeozoic;③evolution of depression and defferential development of Southwest depression at the eastern and western sides in late Palaeozoic;④formation and development of inland basin in Mesozoic; ⑤formation and development of large lag foreland basin in Cenozoic. Southwest depression is a piedmont one dominated by Cenozoic sediments in terms of the sedimentary and tectonic history.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1996年第3期211-218,共8页
Xinjiang Petroleum Geology
关键词
塔里木盆地
坳陷
构造演化
山前坳陷
西南地区
Tarim basin
Southwest
Depression
Formation
Evolution
Piedmont
depression
