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tar sand
 tar sand
envir. nisip de asfalt
| A
 A.
génér. 1. с.х. ales; 1. с.х. selecționat
| sandstone
 sandstone
sciences. gresie
in which | hydrocarbons
 hydrocarbon
envir. hidrocarbură
have been | trapped
 trapped
sylv. prins în capcană
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tar sand A sandstone in which hydrocarbons have been trapped; the lighter compounds evaporate, leaving a residue of asphalt in the rock pores

envir. nisip de asfalt