ThesaurusAntonymsRelated WordsSynonymsLegend:
| Noun | 1. | clastic rock - (geology) a rock composed of broken pieces of older rocksgeology - a science that deals with the history of the earth as recorded in rocks clast - (geology) a constituent fragment of a clastic rock rock, stone - a lump or mass of hard consolidated mineral matter; "he threw a rock at me" |
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