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rudaceous
rudaceous (ruːˈdeɪʃəs) adj (Geological Science) (of conglomerate, breccia, and similar rocks) composed of coarse-grained material. Compare arenaceous1, argillaceous[C20: from Latin rudis coarse, rough + -aceous]rudaceous
rudaceous[rü′dā·shəs] (petrology) Of or pertaining to a sedimentary rock composed of a large quantity of fragments that are larger than sand grains (diameter greater than 2 millimeters). |