油ゆ母ぼ頁けつ岩がん

noun

oil shale

Geological term for a fine-grained sedimentary rock containing kerogen, from which liquid hydrocarbons can be extracted.

• 油ゆ母ぼ頁けつ岩がんは、石せき油ゆの代だい替たいエネルギー源げんとして注ちゅう目もくされている。

  Oil shale is attracting attention as an alternative energy source to petroleum.