Which of the following materials has moderate to high porosity but low permeability?
A) fractured sandstone
B) uncompacted clays
C) well-sorted gravel
D) well-sorted sand

Question

Quizplus · Accepted Answer

Uncompacted clays have moderate to high porosity because the particles are small and can pack together with many small spaces between them. However, these small spaces do not connect well, leading to low permeability, meaning water and other fluids cannot easily flow through the material.

Which of the Following Materials Has Moderate to High Porosity