Laserfiche WebLink
Drumlin <br />A low, smooth, elongated oval hill, mound, or ridge of compact till that has a <br />core of bedrock or drift. It commonly has a blunt nose facing the direction from <br />which the ice approached and a gentler slope tapering in the other direction. <br />The longer axis is parallel to the general direction of glacier flow. Drumlins are <br />products of streamline (laminar) flow of glaciers, which molded the subglacial <br />floor through a combination of erosion and deposition. <br />Duff <br />A generally firm organic layer on the surface of mineral soils. It consists of fallen <br />plant material that is in the process of decomposition and includes everything <br />from the litter on the surface to underlying pure humus. <br />Dune <br />A low mound, ridge, bank, or hill of loose, windblown granular material <br />(generally sand), either barren and capable of movement from place to place or <br />covered and stabilized with vegetation but retaining its characteristic shape. <br />Earthy fill <br />See Mine spoil. <br />Ecological site <br />An area where climate, soil, and relief are sufficiently uniform to produce a <br />distinct natural plant community. An ecological site is the product of all the <br />environmental factors responsible for its development. It is typified by an <br />association of species that differ from those on other ecological sites in kind <br />and/or proportion of species or in total production. <br />Eluviation <br />The movement of material in true solution or colloidal suspension from one <br />place to another within the soil. Soil horizons that have lost material through <br />eluviation are eluvial; those that have received material are illuvial. <br />Endosaturation <br />A type of saturation of the soil in which all horizons between the upper <br />boundary of saturation and a depth of 2 meters are saturated. <br />Eolian deposit <br />Sand-, silt-, or clay-sized clastic material transported and deposited primarily by <br />wind, commonly in the form of a dune or a sheet of sand or loess. <br />Ephemeral stream <br />A stream, or reach of a stream, that flows only in direct response to <br />precipitation. It receives no long-continued supply from melting snow or other <br />source, and its channel is above the water table at all times. <br />Custom Soil Resource Report <br />36 Index #10