Bg1--21 to 58 centimeters (8.3 to 22.8 inches); dark grayish brown (10YR 4/2) clay loam; weak medium subangular blocky structure; firm, moderately sticky, moderately plastic; nonfluid; few medium roots throughout and few fine roots throughout; 15 percent medium faint irregular 10YR 4/3), moist, masses of oxidized iron with clear boundaries in matrix and 15 percent medium distinct irregular 10YR 6/2), moist, masses of reduced iron with clear boundaries in matrix and 15 percent medium distinct irregular 2.5Y 5/2), moist, masses of reduced iron with clear boundaries in matrix; gradual wavy boundary. Lab sample # 15N02701