Fig. 6

Outcrop features of Interval V of the Xiaoerblak Formation (Cambrian Series 2) at the Sugaitblak section, Tarim Basin, Xinjiang, China. a Grayish yellow thin- to medium-bedded dolostones. b The thrombolitic laminites. The laminae are continuous in the interval of less than 0.5 cm. Sometimes the laminae became convex in shape (in yellow arrow). Between the laminae are thrombolitic layers (in blue dashed circles) and the mesoclots are too small to distinguish being chaotic. c The dome-like stromatolite (in yellow dashed line) in the upper part composed of dolomicrite in the height of about 13 cm. d Densely distributed microbial mat relics-like laminations (in yellow arrows) in thrombolitic laminites