The Sinian System in the Upper-Yangtze region contains the Doushantuo Fm. and the Dengying Fm. the former includes more black shales and the latter is marked by a set of dolomites.

• 摘要上扬子区的震旦系包括陡山沱组和灯影组，前者包含较多的黑色页岩，而后者则以大套白石岩为特征。