tar sand


noun Geology.

bituminous sand or sandstone from which asphalt can be obtained.

Origin of tar sand

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for tar sand

tar sand

noun

a sandstone in which hydrocarbons have been trapped; the lighter compounds evaporate, leaving a residue of asphalt in the rock pores

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