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| Organic matter layer & humus |
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Definition
Litter layer of plant residues in relatively undecomposed form.
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Topsoil layer of mineral soil with most organic matter accumulation and soil life. Also known as a "biomantle". |
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Illuvial layer, leached material that accumulates iron, clay, aluminum and organic compounds, a process referred to as illuviation. |
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Definition
| Unconsolidated layer of large unbroken rocks. This layer may accumulate the more soluble compounds. |
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Definition
| This layer contains parent material in bedrock landscapes and denotes the layer of partially weathered bedrock at the base of the soil profile. It is comprised of continuous masses of hard rock that cannot be excavated by hand. |
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Definition
| A specific layer of soil that is parallel to the surface and possesses physical characteristics that differ from those of the layers above and beneath. |
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| The vertical succession down through a soil which reveals distinct layers or horizons in the soil.It depicts all of its horizon. |
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| A mixture of inorganic mineral particles and organic material from decomposed flora and fauna that covers the underlying bedrock, and in which a wide variety of terrestrial plants grow. |
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Sandy soil, Silt Soil, Clay Soil, Loamy Soil |
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Definition
Weathering of rocks (mechanical), Deposition of sediment by erosion (mechanical), Decomposition of organic matter (chemical)
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