Photo at Vivian of residual old white pine stump on deep sands that eroded after clearing for agriculture in mid 1800's. Pine were approximately 200+yrs and came in on previous Indigenous fields. Alfisol, HF, T, WN, D.
Profile in central Washington (Horse Heaven Hills), n.b. light brown colour with little horizon differentiation; wheat yield 10 bu/ac. Entisol, P, C, HC, D.
Photo of the boundary between two ages of pumice deposit in Oregon from Mount Mazama (Crater Lake, ca.1500yrs); lower dark pumice is B horizon of buried profile. n.b. gopher hole. Entisol, HC, C, E, D
Profile in coarse loamy sand (pumice) at Antelope Tree Farm of Weyerhaeuser; Lapine series ;n.b. lower buried old B see Slide # 72. Entisol, P, C, E, D.