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The Nelscott series consists of moderately well drained soils, moderately deep to an ortstein pan that formed in medium textured eolian material overlying stratified marine sediments. Nelscott soils are on marine terraces and have slopes of 0 to 50 percent. The mean annual temperature is about 50 degrees F. and the mean annual precipitation is ...
May 1, 2011 · Whereas soils with ≥50% ortstein commonly had a massive structure (64% of soil series), soils with <50% ortstein and those lacking ortstein often had a subangular blocky structure (74 and 54%, respectively; Table 2). Soils with ≥50% ortstein generally had a hard to extremely hard dry consistence (57%), whereas soils with <50% ortstein and those without ortstein had a consistence of ...
- James Bockheim
- 19
- 2011
- 01 May 2011
These soils have the general properties specified for the Podzolic order and the Humic Podzol great group. They are identified by the following properties: They have a Bh horizon at least 10 cm thick. They do not have an ortstein horizon at least 3 cm thick, a placic horizon, a duric horizon, or a fragipan.
b - A buried soil horizon. c - A cemented (irreversible) pedogenic horizon. Ortstein, placic and duric horizons of Podzolic soils, and a layer cemented by CaCO 3 are examples. ca - A horizon of secondary carbonate enrichment in which the concentration of lime exceeds that in the unenriched parent material.
Oct 1, 2014 · Examples of soils in coastal temperate rainforest of western North America, including (A) a sandy, mixed, isomesic, ortstein, shallow Typic Duraquods (Blacklock soil series) on a 120 ka terraces along the Oregon coast, (B) a Typic Palehumults (Cunniff soil series) on an older uplifted marine terraces along the southern Oregon coast, (C) a Humo-Ferric Podzol (Haplorthods) in coastal British ...
- Dunbar N. Carpenter, James G. Bockheim, Paul F. Reich
- 2014
and may contain living roots. Because soils with and without ortstein oft en occur on the same landforms, soils containing >5% ortstein (89 series) were compared with geographically associated and competing soil series (59) that lack ortstein, using analysis of variance. Soils with ortstein occur on lesser slopes (p = 0.001) and at lower eleva-
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May 1, 2011 · 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. The data suggest that soil water transporting cementing materials (Fe, Al, Si, and dissolved organic C) moves more slowly in landscape positions where ortstein eventually forms than in those where it is absent.
