結けっ晶しょう片へん岩がん

noun

crystalline schist

Geological term for a metamorphic rock with a well-developed schistosity, composed mainly of crystalline minerals.

• この地ち域いきの地ち質しつは主おもに結けっ晶しょう片へん岩がんからなる。

  The geology of this area consists mainly of crystalline schist.