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Ortstein horizon: This strongly cemented Bhc, Bhfc or Bfc horizon is at least 3 cm thick and occurs in more than one-third of the exposed face of the pedon. Ortstein horizons are generally reddish brown to very dark reddish brown. Permafrost: Permanently frozen (i.e., soil temperatures less than 0 °C) ground.
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An ortstein horizon is a Bh, Bhf, or Bf horizon that is strongly cemented and occurs in at least one-third of the lateral extent of the pedon. The ortstein horizon in this subgroup is designated as Bhfc or Bfc depending upon its organic C content and is generally reddish brown to very dark reddish brown in color.
Ortstein Humic Podzol (OT.HP) Common horizon sequence: LFH or O, Ae, Bh or Bhc, Bfc, Cgj. These soils have the general properties specified for the Podzolic order and the Humic Podzol great group. They differ from Orthic Humic Podzols by having an ortstein horizon at least 3 cm thick. An ortstein horizon is a Bh, Bhf, or Bf horizon that is ...
Ortstein horizons are generally reddish brown to very dark reddish brown. Placic horizon - This horizon is a thin layer (commonly 5 mm or less in thickness) or a series of thin layers that are irregular or involuted, hard, impervious, often vitreous, and dark reddish brown to black. Placic horizons may be cemented by Fe, Al-organic complexes ...
The assignment of mineral soil layers to each horizon is done by comparing the properties of the horizons in the field to a list of distinctive characteristics, called diagnostic properties. Table 1: Basic description of mineral soil horizons in the Canadian System of Soil Classification (Agriculture Canada Expert System on Soil Survey, 1987).
Jan 1, 2014 · Definition. Ortstein (German: ort -place, stein -stone) is defined by Soil Survey Staff (1992) as all or part of the spodic horizon, when moist, it is at least weakly cemented into a massive horizon that is present in more than half of each pedon. Origin: Ortstein is usually a hard, partly or entirely cemented illuvial horizon B of podzol or ...
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Ortstein subgroup Soils of this subgroup have an Orstein horizon (Bhc, Bfc) at least 3 cm thick. Placic subgroup These soils have a Placic (Bhfc, Bfc) horizon that can be either a single layer or multiple layers of thin (commonly < 5 mm) layers that are hard, impervious, and dark reddish brown to black and which may form a braided pattern as they join together and break apart into separate layers.
