Browse Items (13654 total)

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

Photo of root system of red pine in calcareous waterlaid sand at Vivian; n.b. note Ca carbonate accumulations in lower soil these developed around old roots cf. Slide #79. Alfisol, P, C, D.

Photo of regosol under sage brush in central Oregon. Aridisol, P, C, D.

Black and white photograph of internal combustion engine with flywheel. Stamped on the face of the picture is the caption Manufactured by Russel Brothers, Fort Frances, Ontario, Canada

Photo of Forest Floor(L,F,H,) and AE of Profile in Slide # 61, Spodosol, HF, S, D.

Photo of F layer showing fungal mycelia; profile in Slide #61. Spodosol, HFM, BSP, F, D.

Photo of Earthworm in Mull(Ah) of Slides # 58 & 59; G-B Podzolic at Maple in Calcareous Till. Alfisol, HA, B, D.

Black and white photograph of Tree Island Dam #2 double dam

Photo of Close-up of BF in Profile Slide # 68 at Kirkwood. Spodosol, HBM.

Photo of C horizon (waterlaid) in profile Slide # 61; n.b. individual minerals e.g. silica, feldspar and biotite. Spodosol, HCM, CM.