Six lithofacies palaeogeographic maps of Doushantuo, Dengying, Qiongzhusi, Canglangpu, and Longwangmiao Ages of Late Sinian and Early Cambrian have been made in the light of dominant facies and in the way to make stratigraphic map.

• 中扬子地区上震旦统发育了从碳酸盐潮坪、开阔台地、浅滩、台地边缘、斜坡到台地前缘盆地等沉积，下寒武统下部主要??细碎屑岩和碳酸盐岩组成的混合型浅海陆棚沉积，上部变成碳酸盐潮坪、开阔台地、台缘斜坡和台缘盆地沉积。