also: ゆもけつがん
noun
Geological term for a fine-grained sedimentary rock containing kerogen, from which liquid hydrocarbons can be extracted.
油母頁岩は、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.
Standard kanji spelling for this geological term.
Alternate reading; less common than ゆぼけつがん.
Compound of 油母 (kerogen) and 頁岩 (shale). The reading ゆぼけつがん is standard; ゆもけつがん is a variant.