Mg C and O isotopic compositions of Late Cretaceous
· The massive limestone layer (SSLF3) in the Sangongzhen section is parallel to bedding white in colour and 1 m thick (Fig. 3F). The limestone layer is interbedded with a thin layer of red or green mud rock. The limestone is mainly composed of pure calcite (–100 ) except for a small amount of quartz (0– ) .
Author Yizhe Wang Chaodong Wu Yanan Fang Jian Ma Jian Ma Bing Shen Fang Huang Linlin Li Meng Ning