堆たい積せき岩がん

noun

sedimentary rock

Geological term for rock formed by the accumulation and consolidation of sediments.

• 堆たい積せき岩がんは地ち層そうを調しらべる上うえで重じゅう要ような手てがかりとなる。

  Sedimentary rocks provide important clues for studying geological strata.