this is because it is a hard substance
impermeable.
An impermeable rock that does not allow water to pass through is called a impermeable rock, such as shale or clay. These rocks have very low porosity and permeability, preventing water from flowing through them.
Impermeable. The pores in solid rock are too small for water to flow through.
The water sinks through the ground through permeable rock and is concentrating when it arrives to impermeable rock. When due to erosion the impermeable rock carrying water is exposed, the water appears as a spring.
An impermeable layer of rock that does not allow water to flow through is called an aquiclude or aquitard. These layers restrict the movement of groundwater, creating a barrier for water flow.
impermeable.
Water cannot pass through a solid rock because the rock's structure is tight and does not have spaces for the water to flow through. The pores in the rock are too small for water molecules to move through.
If the layer of impermeable rock is below the water table, then the water table is likely above the impermeable rock and the groundwater will be trapped above it. If the impermeable rock is above the water table, then the water table is likely below the impermeable rock layer and the groundwater will not be able to pass through it.
An impermeable rock that does not allow water to pass through is called a impermeable rock, such as shale or clay. These rocks have very low porosity and permeability, preventing water from flowing through them.
Impermeable. The pores in solid rock are too small for water to flow through.
A rock that will not let water run through it is an impermeable rock
the impermeable layer
The water sinks through the ground through permeable rock and is concentrating when it arrives to impermeable rock. When due to erosion the impermeable rock carrying water is exposed, the water appears as a spring.
impermeable
An impermeable layer of rock that does not allow water to flow through is called an aquiclude or aquitard. These layers restrict the movement of groundwater, creating a barrier for water flow.
The word to describe a material that does not does not allow the passage of water through it is impermeable. In hydro-geological terms it may also be described as an aquiclude.
Such soil or rock is 'impervious'.