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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 
soil mineral
Earth science; Soil science
(i) Any mineral that occurs as a part of or in the soil. (ii) A natural inorganic compound with definite physical, chemical, and crystalline properties (within the limits of ...
phytomorphic soils
Earth science; Soil science
Well-drained soils of an association which have developed under the dominant influence of the natural vegetation characteristic of a region. The zonal soils of an area.
tundra soils
Earth science; Soil science
(i) Soils characteristic of tundra regions. (ii) A zonal great soil group consisting of soils with dark-brown peaty layers over grayish horizons mottled with rust and having ...
torric
Earth science; Soil science
A soil moisture regime defined like aridic moisture regime but used in a different category of the U. S. soil taxonomy.
petroferric contact
Earth science; Soil science
A boundary between soil and a continuous layer of indurated soil in which iron is an important cement. Contains little or no organic matter.
somewhat poorly drained
Earth science; Soil science
A soil drainage class referring to soils which have evidence of seasonal water tables at depths between 8 and 18 inches.
diatomaceous earth
Earth science; Soil science
A geologic deposit of fine, grayish siliceous material composed chiefly or wholly of the remains of diatoms. It may occur as a powder or as a porous, rigid material.
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)