成都理工大学学报（自然科学版）2011，Vol.38Issue(4)：394-401,8.
四川盆地萎缩衰亡阶段构造层序地层及岩相古地理特征
Tectonic sequence stratigraphy and lithofacies paleogeography of Cretaceous-Paleogene in Sichuan Basin of China
摘要
Abstract
Using the data of drilling and seismic prospecting, outcropping sedimentary facies observation and description, the authors recognize 4 unconformities and erosion hiatus surfaces, 2 maximum flooding surfaces within the Cretaceous-Tertiary in Sichuan Basin of China. Further more, they divide the Cretaceous-Tertiary into 4 tectonic sequences and 6 sequences. The characteristics of the Cretaceous-Tertiary sedimentary framework and evolution are studied by tectonic sequence units. The study shows that from the earlier Early Cretaceous, Sichuan Basin has been effected by multi-times thrust nappes and tectonic emplacements of the periphery structure mountain system. Especially, the strongly squeezing action from southeast to northwest in the fault-fold belt of the southeast of Sichuan Basin has made the basin recession towards northwest and shrink from north to south and the sedimentary basin gradually to atrophy and die out, and finally the sedimentary history of the Sichuan foreland basin ended. In the early period (Early Cretaceous), the basin was opening and the southwest of Sichuan Basin was connected to the Xichang basin by channels. Later (the Late Cretaceous to the Tertiary period), the channels closed gradually, the basin sedimentary of an inland, dry and enclosed saline lakes appeared, and this has the sedimentary characteristics of an intramontane basin.关键词
构造层序/盆地萎缩衰亡/半开放盆地/内陆盆地/四川盆地Key words
tectonic sequence/ basin/ atrophying and dieing out/ semi-open basin/ inland basin/Sichuan Basin分类
能源科技引用本文复制引用
耿旗..四川盆地萎缩衰亡阶段构造层序地层及岩相古地理特征[J].成都理工大学学报（自然科学版）,2011,38(4):394-401,8.基金项目
中国石化科技攻关项目(YJY-P04035-T01) （YJY-P04035-T01）
