Fig. 4From: Early Triassic microbialites from the Changxing Region of Zhejiang Province, South ChinaEarly Triassic thrombolite at Panjiazhuang section. a Polished section of thrombolite with light colored patches of micritic matrix and dark colored sparry calcite clots; b Thin section photomicrograph showing the thrombolitic fabricBack to article page