clastic rock造句 (31) Early Paleozoic rock are mainly carbonate , dolomite, Carboniferous - Permian coal-bearing clastic rock and a small amount of Archean crystalline metamorphic rocks and Mesozoic-Cenozoic granite acid. (32) There was a terrestrial facies lake basin in study area and mainly developed clastic rock during the late Trias. (33) The ores mainly are clastic rock, the mylonite and cataclasite formed in tectonism.