The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China

Figure 2

Ternary diagram of the mineralogy of the Silurian shale samples. Shale samples were classified into three groups: siliceous shale lithofacies (S), argillaceous/siliceous/calcareous mixed shale lithofacies (M), and silica-rich argillaceous shale lithofacies (CM).