GEOLOGY

Detailed explanation-1: -In short, granite has very low permeability. This means liquids have a very difficult time penetrating its surface.

Detailed explanation-2: -Granite rock has very poor permeability because there are no pores or space between them, which means that if we pour water over the granite the water will remain on the surface, this is known as poor primary permeability.

Detailed explanation-3: -Impermeable rocks include shales and unfractured igneous and metamorphic rocks. The water table is the natural level of liquid ground water in an open fracture or well.

Detailed explanation-4: -A rock may be extremely porous, but if the pores are not connected, it will have no permeability. Likewise, a rock may have a few continuous cracks which allow ease of fluid flow, but when porosity is calculated, the rock doesn’t seem very porous.