noun
oil sands; tar sands; bituminous sands
Refers to naturally occurring mixtures of sand, clay, water, and bitumen. Used in energy and environmental contexts.
カナダには広大なオイルサンドの埋蔵量がある。
Canada has vast reserves of oil sands.
Variant with a middle dot; less common but still seen.
Loanword from English 'oil sand'.