Nebraska Soils Field Trip - Virginia Tech

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4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook ^Au--0 to 6 centimeters; brown (10YR 4/3) silt loam, pale brown (10YR 6/3), dry; strong medium and coarse granular structure; firm, slightly hard, slightly sticky, slightly plastic; very fine and fine roots throughout and medium roots throughout; very fine and fine interstitial pores; artifacts: 1% plastic - 2 mm; abrupt smooth boundary. ^Bw1--6 to 22 centimeters; brown (10YR 4/3) silt loam, pale brown (10YR 6/3), dry; moderate thick platy, and moderate medium granular structure; firm, slightly hard, slightly sticky, slightly plastic; fine and medium roots throughout; very fine and fine interstitial pores; clear wavy boundary. ^Bw2--22 to 46 centimeters; brown (10YR 5/3) silt loam, pale brown (10YR 6/3), dry; moderate thick platy, and moderate very thick platy structure; firm, slightly hard, slightly sticky, slightly plastic; very fine roots throughout; very fine tubular pores; 1 percent fine and medium faint 10YR 4/4 masses of oxidized iron on faces of peds; negative reaction to alpha-alpha' dipyridyl; clear wavy boundary. ^Bw3--46 to 52 centimeters; brown (10YR 5/3) silt loam; weak thick platy structure; firm, slightly hard, slightly sticky, slightly plastic; very fine roots; very fine tubular pores; 2 percent medium distinct 10YR 3/3 manganese masses on faces of peds and 5 percent extremely coarse distinct 5YR 4/4 masses of oxidized iron on faces of peds; negative reaction to alpha-alpha' dipyridyl; clear irregular boundary. ^Cug--52 to 102 centimeters; gray (10YR 5/1) artifactual silt loam; weak thick platy structure; friable, soft, nonsticky, nonplastic; very fine roots; very fine tubular pores; 2 percent medium distinct 10YR 3/3 manganese masses on faces of peds and 5 percent extremely coarse prominent 5YR 4/4 masses of oxidized iron on faces of peds; positive reaction to alpha-alpha' dipyridyl; artifacts: 1% metal - 12 cm; 2% rubber - 10 cm; 2% plastic - 14 cm; 10% untreated wood - 6 cm; 5% cloth - 5 cm. 128
Seq. # 4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook Horizon designation Diagnostic horizon Diagnostic characteristics or properties Diagnostic materials Horizon depth (cm) Tour Book Tour Soil Taxonomy World Reference Base Diagnostic characteristics of Soil Taxonomy Diagnostic properties of World Reference Base Soil Taxonomy 1 0 6 ^Au ~ ochric epipedon mineral soil material 2 6 22 ^Bw1 ~ cambic horizon cambic horizon free carbonates mineral soil material 3 22 46 ^Bw2 ~ cambic horizon cambic horizon free carbonates mineral soil material World Reference Base artefacts, mineral material calcaric material, mineral material calcaric material, mineral material 4 46 52 ^Bw3 ~ cambic horizon cambic horizon mineral soil material mineral material 5 52 102 ^Cug ~ reduction of iron 2.) reducing conditions 2.) mineral soil material 129 artefacts, mineral material
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4 th International Union of Soil Sc
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4th IUSS Soil Classification Confer
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Taxonomic Classifications of surfac
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40° 54' 28'' 40° 54' 15'' Soil Ma
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Nebraska Soils Field Trip - Virginia Tech

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