Final answer:
True. Poorly cemented sandstones often have high porosity and permeability.
Step-by-step explanation:
True.
Poorly cemented sandstones often have high porosity and permeability.
Porosity refers to the open or void space within the rock, and it is expressed as a percentage of the volume of open space compared to the total rock volume. Sedimentary rocks formed from well-sorted sediment, such as sandstone, tend to have high porosity due to the abundant spaces between the grains that compose them.
Permeability refers to the ability of a geologic material to transport fluids. It depends on the porosity within the rock and the size and connectivity of the open spaces. Sandstone is a good example of a permeable rock and makes a good aquifer that can yield significant water.