摘要
根据层序地层学基本原理和沉积相演化及界面特征，可将中江地区沙溪庙组划分为湖泊—三角洲及河流相沉积两个充填层序。认为湖泊—三角洲充填层序为完整的湖进—湖退沉积旋回，而河流充填层序主要起填平补齐作用，层序的形成和演化受龙门山推覆构造活动控制。
According to the principle of sequence stratigraphy,evolution of sedimentary facies and characteristics of sequence boundary,two different fill sequences can be distinguished from the Shaximiao Formation,Middle Jurassic in Zhongjian area,Sichuan.One is from lacustrine to lake delta showing complete depositional cycle of lacustrine transgrassion regression which is upward fining to coarsening sequences.The another is the fluvial fill sequence consisting of rhythms of strong progradation alluvial plain.The evolution of the two fill sequences are controlled by the thrusing movement of the Longmenshan nappe belt.
出处
《矿物岩石》
CAS
CSCD
北大核心
1998年第1期66-70,共5页
Mineralogy and Petrology
关键词
沙溪庙组
沉积相
充填层序
贫山耦合
层序地层
Shaximiao Formation sedimentary facies boundary fill sequence stratigraphy coupling relationship between basin and orogenic belt
