集しゅう塊かい岩がん

noun

agglomerate (rock)

Geological term for a coarse volcanic rock composed of large fragments embedded in a finer matrix.

• この地ち域いきの地ち層そうには集しゅう塊かい岩がんが多おおく見みられる。

  Agglomerate is often found in the strata of this region.