What are oil sands?

Answer:

Oil sands are deposits of bitumen, sand, clay and water. Bitumen is a heavy, viscous oil that at room temperature is a lot like cold molasses. The bitumen must be diluted with lighter hydrocarbons before it is usable by refineries to produce gasoline and diesel fuels.

First answer by ID1213142855. Last edit by DarthMario. Contributor trust: 10 [recommend contributor recommended]. Question popularity: 21 [recommend question].