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

ferri-argillan

Earth science; Soil science

A cutan consisting of a mixture of clay minerals and iron oxides, hydroxides, or oxyhydroxides.

Oi horizon

Earth science; Soil science

A layer of organic material having undergone little or no decomposition (fibric material). On the forest floor this layer consists of freshly fallen leaves, needles, twigs, ...

calcification

Earth science; Soil science

The process or processes of soil formation in which the surface soil is kept sufficiently supplied with calcium to saturate the soil cation exchange sites, or the process of ...

fungistat

Earth science; Soil science

A compound that inhibits or prevents fungal growth.

nutrient deficiency

Earth science; Soil science

A low concentration of an essential element that reduces plant growth and prevents completion of the normal plant life cycle.

munsell color system

Earth science; Soil science

A color designation system that specifies the relative degrees of the three simple variables of color: hue, value, and chroma. For example: 10YR 6/4 is a color (of soil) with a ...