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Organic C ranges between 0.5 and 5%. 4) ≥ 10 cm in depth (depth satisfies podzolic B criteria). 5) pedogenic concretions of chemical compounds such as CaCO₃ or iron oxide in the form of nodules. Bfcgj: A B horizon found in Gleyed Ortstein podzolic subgroups. It is irreversibly cemented and denoted as Ortstein, which means it's light to very ...
- Horizons
These layers are assigned distinctive alphabetic symbols as...
- Brunisolic
The main horizon associated with the Brunisolic order is the...
- Soil Formation
Soil formation (also termed soil genesis or pedogenesis) is...
- Organic
This O horizon consists largely of fibric materials that are...
- Horizons
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 ...
Jan 1, 2014 · A huge accumulation of the complexes leads to the formation of coherent aggregates, and even of continuous, highly cemented layers referred to as ortstein. Properties: Ortstein is 25 mm or more thick and 50% or more (by volume) cemented (Soil Survey Staff, 1999). As a rule, the horizon has sandy grain-size distribution.
- Jacek Chodorowski
- jchodor@poczta.umcs.lublin.pl
It does not occur within an E horizon. Gley Profile Form. A gley profile form is defined by the presence of a reductimorphic horizon with an upper boundary within either 15 cm of the base of the A horizon (excluding an AB or A/B horizon) or 30 cm of the mineral soil surface.
May 1, 2011 · The distance between columns or chunks of ortstein varied from 10 cm to as much as 150 cm. In that the extent of cementation varied from <5 to 100%, it is possible that these chunks eventually coalesce to form a continuous ortstein horizon. Most of the soils examined in this study occur on relatively young landforms, approximately <200 kyr.
- James Bockheim
- 19
- 2011
- 01 May 2011
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 is designated as Bhc, Bhfc, or Bfc depending upon its organic C and extractable Fe content. Ortstein horizons are generally reddish brown to very dark reddish brown in color.
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2010a). In ST, ortstein is both a diagnostic subsurface horizon and the only rup-ture-resistance class recognized in the system. In contrast, a placic horizon does not require spodic materials and ranges between 1 and 25 mm in thickness. Unlike the ortstein horizon, the placic horizon is not penetrated by roots except in fractures.
