Term
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Definition
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Term
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Definition
| Surface, mineral, accumulates OM |
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Term
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Definition
| translocation out, eluviation, leaching out, lighter colar |
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Term
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Definition
| Translocation in, below an A, E, or O; accumulation of clay, iron, humus, or CaCO3 |
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Term
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Definition
| Little affected by pedogenic processes |
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Term
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Definition
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Term
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Definition
| the soil undergoing forming, O, A, B, or E horizons |
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Term
| Soil Horizon Formation (over "soil" time) |
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Definition
| PM --> C --> A/C --> A/B/C --> A/E/B/C --> O/A/E/B/C/R |
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Term
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Definition
AB type: dominated by properties of one master horizon but having subordinate properties of another
A/B type: horizons with two distinct parts that have recognizable properties of the two kinds of master horizons (6-9" depth) |
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Term
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Definition
a: sapric (well decomposed)
e: hemic (moderately decomposed)
i: fibric (non-decomposed) |
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Term
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Definition
b: buried soil horizon
p: plowed |
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Term
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Definition
f: frozen soil (permafrost)
g: gleyed soil (b/c of low O2, reduction of Fe)
h: accumulation of humus
k: accumulation of carbonates (CaCO3)
m: cementation (hard)
n: sodium accumulation
o: accumulation of Fe and Al oxides (oxic)
q: silica accumulation (very weathered/old)
s: sesquioxides: Fe2O3, accumulation of Fe and Al- red color
ss: slickensides (shiny clay wedges)
t: clay accumulation
w: weak: color or structure development. |
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Term
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Definition
f: frozen
g: gleyed
k: accumulation of calcium carbonate |
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Term
| Lithological discontinuity |
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Definition
| More than one parent material. Signified by 2Bt |
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Term
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Definition
| fine material, flat terrain, slow soil development b/c of poor fertility and thus poor plant growth. I.E. Glacial Lake Agassiz, beach ridges |
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Term
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Definition
| along rivers, sandy material, very recent deposits |
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Term
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Definition
| SORTED glacial material, stratified sand or sand and gravel. I.E. Anoka Sand Plain |
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Term
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Definition
UNSORTED glacial material.
Des Moines Lobe Till: greay/tan, calcareous, limestone and shale
Superior Love Till: red, acid, granite, basalt, sandstone |
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Term
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Definition
| Loess and Sand. I.E. Mississippi River bluffs |
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Term
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Definition
| Common at bottom of Mississippi River Bluffs. Big chunks of unsorted rock |
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Term
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Definition
Minimum erosion, maximum soil development (Backslope 2nd most developed b/c of erosion problems), more horizons, Bt, Bw, multiple Cs.
A/E/Bt/C |
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Term
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Definition
greatest erosion, minimal development, least water infiltration, greatest runoff.
A/Bw/C or just A/C |
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Term
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Definition
Deposition of material from upslope, near water table, slower development. Deep A horizons.
A1/A2/A3/Bg/C |
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Term
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Definition
trees, colder soils, less evaporation, more leaching, more soil dev.
A/E/Bt/C |
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Term
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Definition
grasses, warmer soils, more evaporation, less leaching, less soil dev.
A/Bw/C |
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Term
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Definition
| Lower pH, loss of nutrients, redder, increase in Fe, increase in clay, deeper weathering |
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Term
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Definition
A/C Youth
A/Bw/C Juvenile
A/E/Bt/C Mature
A/E/Bt1/Bt2/C Adult
A/E/Btqm/Bqm/Bm/C Old Age/Senile |
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Term
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Definition
| formed under grass, deep/dark A horiz, mineral, soft when dry, dark color, thick surface horizon (>10"), High base saturation (>50%) |
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Term
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Definition
| Mollic but w/low base saturation |
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Term
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Definition
| organic Soil (>20%), saturated at some season of the year |
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Term
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Definition
| None of the above, or pale or thin |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Bs, Bhs, Bhsm (sesquioxides, humus, hard matrix)
Very red (Fe/Al oxides), OM, acid, sandy, high rainfall, white E layer |
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Term
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Definition
Bo
Tropical soils, very weathered, greater than 12" thick, Fe/Al, clay, few plant nutrients |
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Term
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Definition
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Term
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Definition
| Entison, Inceptisol, Vertisol, Aridisol, Mollisol, Spodosol, Alfisol, Ultisol, Histosol, Andisol, Oxisol, Gelisol |
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Term
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Definition
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