tar sand


tar sand

noun

Definition of TAR SAND

:  a natural impregnation of sand or sandstone with petroleum from which the lighter portions have escaped

First Known Use of TAR SAND

1899

tar sand

noun    (Concise Encyclopedia)

Deposit of loose sand or partially consolidated sandstone that is saturated with highly viscous bitumen. Oil recovered from tar sands, commonly referred to as synthetic crude, is a potentially significant form of fossil fuel. The largest known deposits of tar sands occur in Canada's Athabasca River valley, where commercial projects for synthetic oil production from tar sands are being carried out.

Variants of TAR SAND

tar sand or bituminous sand

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