Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Soil science

ortstein

Earth science; Soil science

A cemented spodic horizon.

halloysite

Earth science; Soil science

A member of the kaolin subgroup of clay minerals. It is similar to kaolinite in structure and composition except that hydrated varieties occur that have interlayer water ...

topsoil

Earth science; Soil science

(i) The layer of soil moved in cultivation. Frequently designated as the Ap layer or Ap horizon. See also surface soil. (ii) Presumably fertile soil material used to topdress ...

natural levee

Earth science; Soil science

A long, broad low ridge or embankment of sand and coarse silt, built up by a stream on its flood plain and along both sides of its channel. They are wedge-shaped deposits, of the ...

chopping

Earth science; Soil science

A method of preparing forest soils for planting or seeding by passing a heavy drum roller with sharp parallel blades over the site to break up organic debris and mix it into the ...

thermal band

Earth science; Soil science

A general term for middle-infrared wavelengths which are transmitted through the atmosphere window at 8 to 13 µm. Occasionally also used for the windows around 3 to 6 µm.