Claystone, light to dark grey, occasionally grey brown, trace calcareous cement, 0-40% silt, 0-5% glauconite, trace radiolaria, pyrite, micromica, limestone, soft to firm. Sandstone, clear to white, very fine grained to fine grained predominantly very fine grained, well sorted, well rounded, trace calcareous cement, poor to fair visual porosity, friable to hard.