Map showing location of potential Arctic fossil fuel resources. It is estimated that 87% of the Arctic region's oil and gas resources are located in seven geological basins (shaded). From numbers 1-7, they are: Arctic Alaska Basin, Amerasia Basin, West Greenland East Canada Basin, East Greenland Rift Basin, East Barents Basin, Yenisey-Khatanga Basin and the West Siberian Basin. Also shown are offshore oil discoveries (white circles), land based oil discoveries (blue circles).