摘要
基于西昌地区中、新生代地层、古生物、岩相古地理及区域地质的研究，将该区中、新生代的构造演化分为两大阶段：早、中三叠世以拉张为主的块断差异升降阶段和晚三叠世至今以挤压为主的盆地形成与演化阶段。前者控制了区内海相层系的分布；后者可进一步分为前陆盆地形成阶段、盆地形成和发展阶段、盆地萎缩阶段和盆地改造阶段。
On the basis of research of the Mesozoic-Cenozoic stratigraphy, paleontology, sedimentary factes and paleogeography,regional geology of the Xichang Basin,the present paper dividesits tectonic evolution into two big stages: the stage of the Early-Middle Triassic block-faultingvertical displacement under E-W tension and the stage of the Late Triassic-present formation andevolution of the basin under compressive stress.The former controlled the distribution of marinestrata and the latter can be further divided into the formation stage of the foreland basin,the formation and development stage of island drainage basin,the suppression and remould stages of thebasin.
出处
《成都理工学院学报》
CSCD
1996年第1期85-90,共6页
Journal of Chengdu University of Technology
关键词
川西南
中-新生代
西昌盆地
盆地演化
Southwestern Sichuan
Xichang Basin
Mesozoic-Cenozoic
evolution
