From the Soil Micromorphology Slide Collection

Preparation of sample: Air dry and freshly fractured
Micromorphological description of slide: A clay coating composed of fine clay overlies silt size particles in a channel.

Data for the horizon
Horizon sampled: 2Bxt1
Depth sampled: 56-69cm
Physical and chemical data available: Sand = 14%, silt = 65%, clay = 21 %; pH = 4.4, OC -0.1 %, BS
Macromorphological description of horizon: IOYR 5/6 silt loam; moderate, medium, platy structure; few, medium, faint 7.5YR 5/6 mottles; medium IOYR 4/6 clay coatings; thick IOYR 6/3 silt coatings.
Micromorphological description of horizon: Open porphyric rdp; illuviation clay coatings with strong to very strong, moderately striated, continuous or flecked parallel orientation.

Soil Classification
U.S.: Fine-silty, mixed, mesic Typic Fragiudult

Physiographic position: Loess-mantled colluvial slope
Topography and hill slope position: Backslope
Parent material: Loess over paleosol developed in colluvium
Soil climatic data and/or soil water balance: Moderately well drained
Vegetation: Presently cultivated

Data for 35-mm slide: Scanning electron micrograph

Thompson M.L. , N.E. Smeck, and J.M. Bigham. 1 981 . Parent materials and paleosols in the Teays River Valley, Ohio. Soil Sci. Soc. Am. J. 45•.91 8-925.
Thompson, M.L. and N.E. Smeck. 1 983. Micromorphology of polygenetic soils in the Teays River
Valley, Ohio. Soil Sci. Soc. Am. J. 47:734-742. Source - M. L. Thompson

Slide CT4. Soil Science Society of America, 1993. A Reference Slide Collection for Soil Micromorphology. SSSA, Madison, WI.