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

Figure 6

Transmitted light thin section images of silica-rich argillaceous shale lithofacies (CM). (a) Long striped clay flakes distributed along the lamination. Minor organic flakes are intermittent along the lamination. No obvious laminae of silty quartz are observed. JYA-2, , permeability , 2531.09 m. (b) Long striped and lenticular clay flakes distributed along the lamination. Organic flake along the lamination is observed. Clay flakes are dyed by organic matters. Minor laminae of silty quartz are intermittently along the lamination. JYA-3, , permeability , 2537.09 m. (c) Intermittent laminae of silty quartz. Miniature lenticular clay flakes are along the lamination. JYA-4, , 2540.47 m. (d) Slight laminae of silty quartz. Miniature lenticular clay flakes are along the lamination. JYA-8, , permeability , 2553.09 m.

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