noun
A sedimentary rock containing kerogen, from which oil can be extracted. Technical term used in geology and energy contexts.
オイルシェールは、石油の代替エネルギー源として注目されている。
Oil shale is attracting attention as an alternative energy source to petroleum.
Variant with an interpunct; less common but still seen.
シェールオイル (shale oil) is the liquid oil extracted from oil shale, while オイルシェール refers to the rock itself.
Loanword from English 'oil shale'.