Greenish gray (5G6/1) loam; many coarse prominent yellowish brown (10YR5/8) mottles; massive; very sticky, very plastic; pressure faces with thin sand layer and some sand pockets along cracks; few hard Fe/Mn concretions; few secondary lime concretions, diameter up to 3-5 cm; moderately alkaline (field pH 8.0); gradual, smooth boundary