Talk:Orinoco tar sands

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There are different figures for the amount of oil in the Canadian sands and the Venezuelan ones.

Here it says: It is estimated that at least 66% of the world's petroleum reserves are preserved in oil sand form, with 32% (270 km³ or 1.7 trillion barrels) of oil sand deposits coming from Athabasca and 34% (286 km³ or 1.8 trillion barrels) from Orinoco.

Yet in this section of the Tar Sands article it claims that there is more oil in Canada.

Tar sands represent as much as 66% of the world's total reserves of oil, with at least 1.7 trillion barrels (1.7×1012 bbl or 270×109 m3) in the Canadian Athabasca Tar Sands and 1.6 trillion barrels (1.6×1012 bbl or 254×109 m3) in the Venezuelan Orinoco tar sands, compared to 1.75 trillion barrels (1.75×1012 bbl or 278×109 m3) of conventional oil worldwide, most of it in Saudi Arabia and other Middle-Eastern countries.

Could this please be clarified? peter12220