gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
Coquina punika rock sedimentary sing dumadi salah siji Enèng sing lamur meh tanggung saka diangkut, abraded, lan mekanisme-diurutake pecahan saka meriam moluska, trilobites, brachiopods, utawa invertebrata liyane
rock grained coarse, rock opaque
rock grained coarse, rock opaque