Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin

LIU Hanlin,QIU Zhen,XU Liming,WANG Fengqin,TONG Qiang,LIN Jiahao,YIN Shuai,WANG Wenqiang

Fig. 1. Geological outline (a), sequence stratigraphic division of Yanchang Formation (b) and Chang 8 Member (c) in Longdong area, Ordos Basin (the geological age is revised according to Reference [22]).