The Location of Oil Sands. Oil sands deposits are found in dozens of countries throughout the world. The main deposits are found within Cretaceous rocks in Venezuela and Canada.Click to see full answer. Also question is, where are oil sands located?The Athabasca oil sands, also known as the Athabasca tar sands, are large deposits of bitumen or extremely heavy crude oil, located in northeastern Alberta, Canada – roughly centred on the boomtown of Fort McMurray.Likewise, what are oil sands used for? Tar sands (also known as oil sands) are a mixture of mostly sand, clay, water, and a thick, molasses-like substance called bitumen. Bitumen is made of hydrocarbons—the same molecules in liquid oil—and is used to produce gasoline and other petroleum products. Also Know, what are oil sands and where are the most plentiful? There are numerous deposits of oil sands in the world, but the biggest and most important are in Canada and Venezuela, with lesser deposits in Kazakhstan and Russia. The total volume of non-conventional oil in the oil sands of these countries exceeds the reserves of conventional oil in all other countries combined.Where did the oil sands come from?Alberta’s oil sands were formed millions of years ago, as tiny marine creatures died and drifted to the sea floor and were covered by layers of sediment that exerted enough pressure and temperatures to transform the organic matter into oil. Over millions of years, that oil became trapped in thick layers of sand.