川南地区五峰组—龙马溪组沉积期古地貌及含气页岩特征

施振生,袁渊,赵群,孙莎莎,周天琪,程峰

Paleogeomorphology and oil-bearing shale characteristics of the Wufeng-Longmaxi shale in southern Sichuan Basin，China

Zhensheng SHI,Yuan YUAN,Qun ZHAO,Shasha SUN,Tianqi ZHOU,Feng CHENG

图7 乐山—龙女寺古隆起东南斜坡五峰组—龙马溪组不同沉积相带大薄片照片显示典型层理类型 （a）砂泥互层型水平层理，浅水陆棚亚相，威202井，2 573.8 m，正交光；（b）砂泥递变型水平层理，深水斜坡微相，威201井，1 540.98 m，正交光；（c）书页型水平层理，深水平原微相，自201井，3 668.8 m，正交光；（d）深水洼地微相，泸202井，4 450.5 m，正交光

Fig.7 Enlarged thin section photos showing bedding types of different sedimentary facies of the Wufeng-Longmaxi shale on the southeastern slope of the Leshan-Longnüsi paleo-uplift