Classé par:
Explorer
—The condition of a soil layer in which the layer appears as a coherent or solid mass largely devoid of peds.
—A horizon in which mottle abundance is greater than 10% (visual abundance estimate) and contrast between colours is distinct and prominent.
—The presence of more than one soil colour in the same soil horizon, not including different nodule or cutan colours.
123456
—A small concretionary deposit usually of sesquioxides or carbonates, usually hard.
: The negative logarithm of the hydrogen ion concentration of a soil solution. The degree of acidity or alkalinity of a soil expressed in terms of the pH scale, from 2 to 10.
—A hardened and/or cemented horizon in or below the soil profile.
123456
—Lake extant during a prior geological period.
The negative logarithm of the hydrogen ion concentration of a solution. It is the quantitative expression of the acidity and alkalinity of a solution and has a scale that ranges from about 0 to 14. pH 7 is neutral, <7 is acid and >7 is alkaline.
—A medium, textured soil of approximate composition 10 - 25% clay, 25 - 50% silt and <50% sand.
—Soil which is not cohesive;