Research Article

Geochemical Characteristics and Sedimentary Environment of the Upper Permian Longtan Coal Series Shale in Western Guizhou Province, South China

Figure 8

(a) Ternary diagram of regular steranes (C27-C28-C29) (the basemap is from [31]) and (b) ternary diagram of minerals of the Longtan coal series shale.
(a)
(b)