Shale has a high porosity, but its pores are small and disconnected, so it is relatively impermeable.

页岩有高孔隙度，但其孔隙既小而又不连通，所以它是相对不渗透的。

youdao

Shale has a high porosity, but its pores are small and disconnected, so it is relatively impermeable.

页岩有高孔隙度，但其孔隙既小而又不连通，所以它是相对不渗透的。

youdao