A sandstone that contains asphalt within its pore spaces.
sandstone containing the densest aspbaltic components of petroleum - the end-product of evaporation of volatile components or of some thickening process.
Swamp-like deposit of a mixture of fine clay, sand, water, and variable amounts of tar-like heavy oil known as bitumen. Bitumen can be extracted from tar sand by heating. It can then be purified and upgraded to synthetic crude oil. See bitumen.
A sandy deposit of organic matter impregnated with a tarry substance made up mostly of hydrocarbons, from which petroleum can be extracted.
Deposit of a mixture of clay, sand, water, and varying amounts of a tarlike heavy oil known as bitumen. Bitumen can be extracted from tar sand by heating. It is then purified and upgraded to synthetic crude oil. See bitumen.
Native asphalt, solid and semi-solid bitumen, including tar-impregnated rock or sands from which oil is recoverable by special treatment.
a type of oil-yielding sandstone or sand formation containing tarry substances. [AHDOS
