Athabasca Oil Sands  search
BTCanada
 .Western Canada
 ..Alberta
 ...Athabasca Oil Sands
UFAthabaska Oil Sands
RTClearwater Formation
 McMurray Formation
SNIn E Alberta. One of the largest petroleum reservoirs in the world. Oil is found in the McMurray, Clearwater, and Grand Rapids formations. Added to Thesaurus in 1981.