From the Soil Micromorphology Slide Collection

Data for the horizon Horizon sampled: A 1 Depth sampled: 0-18 cm
Physical and chemical data available: See reference
Macromorphological description of horizon: 10 YR 3/2 moist, 10 YR 5/2 dry silt loam; fine, moderate subangular blocky structure; 10% 2-5-mm concretions
Micromorphological description of horizon: Enaulic related distribution pattern (Bullock et al. 1985).
The skeleton grains for the most part touch and therefore support each other. Aggregates of finer material partly fill spaces between skeleton grains. The finer material in the aggregates is isotropic. Intermediate development, i.e., the aggregates occupy about half the space between skeleton grains.

Data for thin section
Preparation of sample: Air dry
Impregnating medium: Polyester resin
Thickness of section: 30 µm
Size of Section: 25 X 50 mm

Soil Classification
U.S.: Bullards Series - Typic Haplorthod, coarse-loamy, mixed, mesic family

Environment :
Elevation: 39 m
Topography and hill slope position: 3% slope Parent material: Marine beach and eolian material
Vegetation: Salal (Gaultheria shallon), brackenfern (Pteridium aguilinum), blackberry (Rubus species), Sitka spruce (Picea sitchensis), and red alder (Alnus rubra).
Climate: Moist, marine temperate. Winters are cool and wet and summers mostly dry.

Data for 35-mm slide
Frame length: 2.7 mm width
Light mode: Plane polarized

Nettleton, W. D., R. B. Parsons, A. 0. Ness, and F. W. Gelderman. 1982. Spodosols along the Southern Oregon Coast. Soil Sci. Soc. of Am. J. 46: 593-598.
Source - W. D. Nettleton

Slide RDP3. Soil Science Society of America, 1993. A Reference Slide Collection for Soil Micromorphology. SSSA, Madison, WI.