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Custom Soil Resource Report <br />Very coarse sand: 2.0 to 1.0 <br />Coarse sand: 1.0 to 0.5 <br />Medium sand. 0.5 to 0.25 <br />Fine sand: 0.25 to 0.10 <br />Very fine sand: 0.10 to 0.05 <br />Silt: 0.05 to 0.002 <br />Clay. Less than 0.002 <br />Solum <br />The upper part of a soil profile, above the C horizon, in which the processes of <br />soil formation are active. The solum in soil consists of the A, E, and B horizons. <br />Generally, the characteristics of the material in these horizons are unlike those of <br />the material below the solum. The living roots and plant and animal activities are <br />largely confined to the solum. <br />Spoil area (map symbol) <br />A pile of earthy materials, either smoothed or uneven, resulting from human <br />activity. <br />Stone line <br />In a vertical cross section, a line formed by scattered fragments or a discrete layer <br />of angular and subangular rock fragments (commonly a gravel- or cobble -sized <br />lag concentration) that formerly was draped across a topographic surface and was <br />later buried by additional sediments. A stone line generally caps material that was <br />subject to weathering, soil formation, and erosion before burial. Many stone lines <br />seem to be buried erosion pavements, originally formed by sheet and rill erosion <br />across the land surface. <br />Stones <br />Rock fragments 10 to 24 inches (25 to 60 centimeters) in diameter if rounded or <br />15 to 24 inches (38 to 60 centimeters) in length if flat. <br />Stony <br />Refers to a soil containing stones in numbers that interfere with or prevent tillage. <br />Stony spot (map symbol) <br />A spot where 0.01 to 0.1 percent of the soil surface is covered by rock fragments <br />that are more than 10 inches in diameter in areas where the surrounding soil has <br />no surface stones. <br />Strath terrace <br />A type of stream terrace; formed as an erosional surface cut on bedrock and thinly <br />mantled with stream deposits (alluvium). <br />Stream terrace <br />One of a series of platforms in a stream valley, flanking and more or less parallel <br />to the stream channel, originally formed near the level of the stream; represents <br />53 <br />