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May 1, 2011 · The present summary identified elevation as a key factor distinguishing between soils with ortstein and geographically related soils without ortstein; in the USA soils with some form of ortstein often occur below 200 m elevation . About a third of the soils occurred in the Great Lakes region on sites with a seasonally high water table, primarily in the spring following melting of a thick snowpack.
- James Bockheim
- 19
- 2011
- 01 May 2011
May 1, 2011 · Soils with ortstein cover 2.2 million ha in the USA, 87% of which occur in Michigan and Florida. Of the 650 soils in the National Soil Survey database classified as Spodosols, 47 contain ...
May 1, 2011 · Soils with ortstein cover 2.2 million ha in the USA, 87% of which occur in Michigan and Florida. Of the 650 soils in the National Soil Survey database classified as Spodosols, 47 contain sufficient ortstein to be classified in the ortstein rupture-resistance class; another 42 soils contain materials that are 5% ortstein (89 series) were compared with geographically associated and competing ...
The U.S. Geological Survey provides geochemical and mineralogical maps for the conterminous United States, based on sampling data with a spatial resolution of 1 sample per 1,600 square km, for a total of 4857 sites across the country. The resulting interactive maps allow users to see regional variations in soil chemistry at different depths in the soil. The example map shown above gives the ...
Jun 10, 2014 · Soils with ortstein cover 2.2 million ha in the USA, 87% of which occur in Michigan and Florida. ... Soils with ortstein occur on lesser slopes (p = 0.001) and at lower elevations (p = 0.015) than ...
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. The data suggest that soil water transporting cementing materials (Fe ...
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Jan 1, 2014 · 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. Compared to the adjacent non-cemented horizons, ortstein usually has a higher bulk density (Lambert and Hole, 1971; Wang et al., 1978). It is also stronger; the penetration ...
