ALL meanings of graywacke
gray·wacke
G g - noun graywacke A dark coarse-grained sandstone containing more than 15 percent clay. 1
- noun graywacke Geology. a dark-gray coarse-grained wacke. 1
- noun graywacke a nonporous, dark-colored sandstone containing angular particles of other rocks 0
- noun graywacke a fine-grained conglomerate resembling sandstone 0
- noun graywacke Alternative form of greywacke. 0