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Subsoil layer. Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus. The subsoil is labeled the B Horizon in most soil mapping systems.
The Medal "For the Tapping of the Subsoil and Expansion of the Petrochemical Complex of Western Siberia" was awarded to active members in the underground exploration and development of the oil and gas complex of Western Siberia for selfless labour in the identification, exploration and development of the mining and industrial processing of oil and gas, for work in construction, in ...
Many soils have an organic surface layer, which is denominated with a capital letter "O" (letters may differ depending on the system). The mineral soil usually starts with an A horizon. If a well-developed subsoil horizon as a result of soil formation exists, it is generally called a B horizon.
Dmytro Anatoliiovych Kashchuk (Ukrainian: Дмитро Анатолійович Кащук; born May 4, 1983) is a Ukrainian entrepreneur, investor, former head of the State Geologic and Subsoil Survey of Ukraine, and expert in the field of subsoil use. [1] [2]
Intrazonal soils have more or less well-defined soil profile characteristics that reflect the dominant influence of some resident factor of relief or parent material over the classic zonal effects of climate and vegetation.
the third edition (Update 2015) with the English original and the translations into Czech, French, Georgian, Polish, Russian, Slovene, and Spanish, an explanation of the system, soil profile photos of all RSGs, which may be downloaded and used if the author is accredited (additional photos can be found on the World of Soils page of the IUSS), [9]
USDA soil taxonomy (ST) developed by the United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate classification of soil types according to several parameters (most commonly their properties) and in several levels: Order, Suborder, Great Group, Subgroup, Family, and Series.
The solum (plural, sola) in soil science consists of the surface and subsoil layers that have undergone the same soil forming conditions. The base of the solum is the relatively unweathered parent material. Solum and soils are not synonymous. Some soils include layers that are not affected by soil formation. These layers are not part of the solum.