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Custom Soil Resource Report <br /> Soil <br /> A natural, three-dimensional body at the earth's surface. It is capable of <br /> supporting plants and has properties resulting from the integrated effect of <br /> climate and living matter acting on earthy parent material, as conditioned by <br /> relief and by the passage of time. <br /> Soil separates <br /> Mineral particles less than 2 millimeters in equivalent diameter and ranging <br /> between specified size limits. The names and sizes, in millimeters, of separates <br /> recognized in the United States are as follows: <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 <br /> of the material below the solum. The living roots and plant and animal activities <br /> are 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 <br /> layer of angular and subangular rock fragments (commonly a gravel- or cobble- <br /> sized lag concentration) that formerly was draped across a topographic surface <br /> and was later buried by additional sediments. A stone line generally caps <br /> material that was subject to weathering, soil formation, and erosion before <br /> burial. Many stone lines seem to be buried erosion pavements, originally <br /> formed by sheet and rill erosion 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 <br /> tillage. <br /> 67 <br />