Discussion on classification and naming scheme of fine-grained sedimentary rocks

PENG Jun,ZENG Yao,YANG Yiming,YU Ledan,XU Tianyu

Fig. 2. The sector diagram of classification and nomenclature of fine-grained sedimentary rocks. I—pure siltstone; II—silt-bearing siltstone; III—argillaceous siltstone; IV— silty mudstone; V—silt-bearing mudstone; VI—pure mudstone; VII—clay-bearing siltstone/sand-bearing siltstone; VIII—sand-bearing argillaceous siltstone; IX—sand-bearing silty mudstone; X—silt-bearing mudstone/sand-bearing mudstone; XI—clay-bearing sandy siltstone/sandy siltstone; XII—silt-bearing sandy mudstone/sandy mudstone.