G2R1E1Y4W4A1C3K5E1S1
23 points
GREYWACKES is validvalid
GREYWACKE, a type of sandstone [n]
GREYWACKE, any coarse-grained, usually dark sandstone containing angular mineral and rock fragments in a fine-grained clayey matrix, also GRAYWACKE [n]
GREYWACKE, a type of sandstone [n]
GREYWACKE, any coarse-grained, usually dark sandstone containing angular mineral and rock fragments in a fine-grained clayey matrix, also GRAYWACKE [n]