19 Terms
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Soil science
That science dealing with soils as a natural resource on the surface of the earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils per se; and these properties in relation to the use and management of soils.
Industry: Earth science
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Soil science
Humox
Earth science; Soil science
Oxisols that are moist all or most of the time and that have a high organic carbon content within the upper 1 m. Humox have a mean annual soil temperature of <22°C and a base saturation within the ...
Equivalent diameter
Earth science; Soil science
In sedimentation analysis of particle size, the diameter assigned to a nonspherical particle; that is, the diameter of a spherical particle of the same density and velocity of fall. Sometimes ...
Stoniness
Earth science; Soil science
Classes based on the relative proportion of stones at or near the soil surface. Used as a phase distinction in mapping soils.
Depression
Earth science; Soil science
Any relatively sunken part of the Earth's surface; especially a low-lying area surrounded by higher ground. A closed depression has no natural outlet for surface drainage (e.g. a sinkhole). An open ...
Honeycomb frost
Earth science; Soil science
Ice in the soil in insufficient quantity to be continuous, thus giving the soil an open, porous structure permitting the ready entrance of water.
Calcids
Earth science; Soil science
Aridisols that have a calcic or petrocalcic horizon that has its upper boundary within 100 cm of the soil surface.
Lepidocrocite
Earth science; Soil science
FeOOH An orange iron oxide mineral that is found in mottles and concretions of wet soils.
