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Subsoil
 
 
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Subsoil (also called substrata) is the layer of soil
Soil

Soil is the naturally occurring, unconsolidated or loose covering on the Earth's surface. Soil is composed of particles of broken rock that have been altered by chemical and environmental processes including weathering and erosion....
 under the topsoil
Topsoil

Topsoil is the upper, outermost layer of soil, usually the top 2 to 8 inches. It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biology soil activity occurs....
 on the surface of the ground. The subsoil may include substances such as clay
Clay

Clay is a naturally occurring material composed primarily of fine-grained minerals, which show plasticity through a variable range of water content, and which can be hardened when dried and/or fired....
 and has only been partially broken down by air
AIR

Air is the part of Earth's atmosphere that humans breath and as such Air .Air may also refer to:...
, sunlight
Sunlight

Sunlight, in the broad sense, is the total spectroscopy of the electromagnetic radiation given off by the Sun. On Earth, sunlight is Filter ed through the Earth's atmosphere, and the solar radiation is obvious as daylight when the Sun is above the horizon....
, water
Water

Water is a common chemical substance that is essential for the survival of all known forms of life. In typical usage, water refers only to its liquid form or States of matter, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam....
 etc., to produce true soil. Below the subsoil is the substratum, which can be residual bedrock
Bedrock

File:Rockhead1.jpg.JPGIn stratigraphy, bedrock is the native consolidated Rock underlying the surface of a terrestrial planet, usually the Earth....
, sediments, or aeolian deposits, largely unaffected by soil-forming factors active in the subsoil.






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Encyclopedia


Subsoil (also called substrata) is the layer of soil
Soil

Soil is the naturally occurring, unconsolidated or loose covering on the Earth's surface. Soil is composed of particles of broken rock that have been altered by chemical and environmental processes including weathering and erosion....
 under the topsoil
Topsoil

Topsoil is the upper, outermost layer of soil, usually the top 2 to 8 inches. It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biology soil activity occurs....
 on the surface of the ground. The subsoil may include substances such as clay
Clay

Clay is a naturally occurring material composed primarily of fine-grained minerals, which show plasticity through a variable range of water content, and which can be hardened when dried and/or fired....
 and has only been partially broken down by air
AIR

Air is the part of Earth's atmosphere that humans breath and as such Air .Air may also refer to:...
, sunlight
Sunlight

Sunlight, in the broad sense, is the total spectroscopy of the electromagnetic radiation given off by the Sun. On Earth, sunlight is Filter ed through the Earth's atmosphere, and the solar radiation is obvious as daylight when the Sun is above the horizon....
, water
Water

Water is a common chemical substance that is essential for the survival of all known forms of life. In typical usage, water refers only to its liquid form or States of matter, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam....
 etc., to produce true soil. Below the subsoil is the substratum, which can be residual bedrock
Bedrock

File:Rockhead1.jpg.JPGIn stratigraphy, bedrock is the native consolidated Rock underlying the surface of a terrestrial planet, usually the Earth....
, sediments, or aeolian deposits, largely unaffected by soil-forming factors active in the subsoil. It contains partially weathered particles. It is usually a lighter shade of brown or yellow.

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