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Jan 1, 2014 · Origin: Ortstein is usually a hard, partly or entirely cemented illuvial horizon B of podzol or gley-podzol soils, formed as a result of illuviation of aluminum, iron, manganese, and humus compounds from the overlying horizons.
- Jacek Chodorowski
- jchodor@poczta.umcs.lublin.pl
May 1, 2011 · Orstein occurs in soils with soil temperature regimes (STR) ranging from cryic or frigid to hyperthermic as well as isomesic. However, soils with ortstein most commonly had a frigid STR. Soils with ortstein occurred in four soil mineral classes, including mixed, siliceous, isotic, and amorphic but were most common (56%) in the mixed class .
- James Bockheim
- 19
- 2011
- 01 May 2011
They do not have an ortstein horizon but may have a duric, Ah, or Bt horizon, or a fragipan. Evidence of gleying in the form of dull colors or mottling is commonly apparent especially above depressions in the placic horizon.
May 1, 2011 · Soils with ortstein occur on lesser slopes (p = 0.001) and at lower elevations (p = 0.015) than soils without ortstein. The lower depth boundary and thickness of the spodic horizon were significantly greater ( p = 0.001) in soils with ortstein than in those without ortstein.
- James Bockheim
- 2011
May 1, 2011 · Soils with ortstein occur on lesser slopes (p = 0.001) and at lower elevations (p = 0.015) than soils without ortstein. The lower depth boundary and thickness of the spodic horizon were...
poor drainage as only 39% of the soils with ortstein have an aquic soil moisture regime. From a weight-of-evidence assessment, ortstein is cemented by Al-organic complexes and short-range-order compounds, and placic horizons are cemented by Fe as ferrihydrite or as Fe-organic complexes.
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Jan 1, 2016 · A hardpan cemented with iron and organic matter, that forms in acid soils, most commonly in the B horizon of a Podzol, where it tends to form at the top of the water table. The Eh‐pH diagram (Figure O1) illustrates the process. Water in the zone of saturation contains ferrous iron in solution.
