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Custom Soil Resource Report <br /> Masses <br /> See Redoximorphic features. <br /> Meander belt <br /> The zone within which migration of a meandering channel occurs; the flood- <br /> plain area included between two imaginary lines drawn tangential to the outer <br /> bends of active channel loops. <br /> Meander scar <br /> A crescent-shaped, concave or linear mark on the face of a bluff or valley wall, <br /> produced by the lateral erosion of a meandering stream that impinged upon and <br /> undercut the bluff. <br /> Meander scroll <br /> One of a series of long, parallel, close-fitting, crescent-shaped ridges and <br /> troughs formed along the inner bank of a stream meander as the channel <br /> migrated laterally down-valley and toward the outer bank. <br /> Mechanical treatment <br /> Use of mechanical equipment for seeding, brush management, and other <br /> management practices. <br /> Medium textured soil <br /> Very fine sandy loam, loam, silt loam, or silt. <br /> Mesa <br /> A broad, nearly flat topped and commonly isolated landmass bounded by steep <br /> slopes or precipitous cliffs and capped by layers of resistant, nearly horizontal <br /> rocky material. The summit width is characteristically greater than the height of <br /> the bounding escarpments. <br /> Metamorphic rock <br /> Rock of any origin altered in mineralogical composition, chemical composition, <br /> or structure by heat, pressure, and movement at depth in the earth's crust. <br /> Nearly all such rocks are crystalline. <br /> Mine or quarry (map symbol) <br /> An open excavation from which soil and underlying material have been <br /> removed and in which bedrock is exposed. Also denotes surface openings to <br /> underground mines. <br /> Mine spoil <br /> An accumulation of displaced earthy material, rock, or other waste material <br /> removed during mining or excavation. Also called earthy fill. <br /> Mineral soil <br /> Soil that is mainly mineral material and low in organic material. Its bulk density <br /> is more than that of organic soil. <br /> 54 <br />