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

Figure 8

FE-SEM images of argillaceous/siliceous mixed shales (M). (a) Back-scattered electron of argillaceous/siliceous mixed shale lithofacies. There are many silt-sized quartz particles in argillaceous/siliceous mixed shale sample. (b) Large OM particles in argillaceous/siliceous mixed shale, but pores are less developed. (c) Dissolution-related rims in the boundary of feldspar. Dissolution-related pores in calcite are less connected. (d) OM-hosted pores in the residual OM particles.

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