Bt horizon of gravelly clay in Glen Williams profile cf. Slide #166 clay is illuviated, gravel is calcareous.

Windblown deposits at Glen Williams to show both current upper plow layer and a buried plow layer covered by windblown sand. cf. # 152 & 164

View of windblown sand structure at the Glen Williams site; cf. slides # 151 & 164

Current plow layer in sands over gravel at Glen Williams bone pit site.

Closeup of iron lines and deposition of organic matter in an old root/worm channel; profile of slides #151 & 164.

Profile of soil in sandy loam at Glen Williams where bone pit excavations were made; n.b. plow layer and power Bf. see slides # 151-153 & 165-169.

Microtus hole in the Ah of the profile at the Dunlap Observatory, Richmond Hill; cf. slides # 140, 162

General view of forest floor under maple at Dunlap Observatory, Richmond Hill. cf. Slide #140

II year UT students examining soil profile in interlobate sands near Maple.

Bedded alluvial deposits overlain by clay (till?); location unknown