Soil horizons

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8 Terms

1
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O

undecomposed litter, decomposed organic debris, humus

2
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A

a leached mineral horizon w/ a high portion of organic matter (dark in color)

3
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E

a light colored layer representing the zone of maximum leaching

4
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B

maximum zone of accumulation of weathering products such as silicate clay, iron, aluminum, humus, carbonates, gypsum, or silica, illuvial zone

5
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C

relatively unaltered unconsolidated parent material

6
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R

bedrock

7
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A + E

eluvial zone

8
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A + E + B

solum, a true definable soil zone