![oil sand oil sand](https://www.tekportal.net/wp-content/uploads/2018/12/oil-sand.jpg)
noun Geology.
- a sand or sandstone containing oil or tarry residue in the pore spaces.
noun
- a sandstone impregnated with hydrocarbons, esp such deposits in Alberta, Canada
- A stratum of sand or sandstone containing petroleum that can be extracted by way of wells. The term is also applied to limestone and dolomite strata that contain petroleum.