noun🔗Share砂岩A sedimentary rock produced by the consolidation and compaction of sand, cemented with clay etc."The old stone monument was made of sandstone, showing how sand and clay over time formed a rock. "古い石碑は砂岩でできており、砂と粘土が時間をかけてどのように岩を形成したかを示していました。geologymaterialChat with AIVocabulary GamePractice Reading
