| 1. | 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。 |