Windblown sand showing the 'mare's tail' structure; taken at Forbes Creek in Algonquin Park. Spodosol, HC, S, D.

Hexagonal cracking in clay at Caledon, where the upper horizons have been eroded away. Mollisol, HC, S, E, D.

Podzol profile in deep sand near Manitouwadge; supporting mixed jack pine and black spruce. Spodosol, P, C, F, D.

Intense Ae and Bh developed in old heathland now planted with spruce slide courtesy of J.A. (Steve) Brodie. Spodosol, P, C, F, D.

Poplar litter showing flat 'shingle' type surface, cf. Slide #12. Spodosol, HF, FF, F, D.

Profile in water-laid sand; n.b. shallowness of actual profile in deepC materials; mixed forest of white pine/poplar; located near Achray in Algonquin Park. Spodosol, P, C, F, D.

Litter from red pine plantation after 45 years; n.b. openness allowing full infiltration. Spodosol, HF, FF, D.

Close-up of forest soil at Dorset in sandy loam; n.b. fine roots in thin Forest Floor - area has a fire history; Ae irregular and weak. Spodosol, P, FF, F, D.

Gray-brown podzolic with plow layer; an old field soil that has been planted to red pine at York Regional Forest (Vivian); n.b. this is abisequum with podzol developing in upper A, lower B i. Alfisol, P, C, F, D.

Plow layer at St. Williams nursery, Lots 11 & 12; n.b. homogeneity of the plow layer and sharp delineation from lower soil. Alfisol, H, C, HC, D.