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Text File  |  1995-08-16  |  414b  |  13 lines
  1. Typical soil profile an example of how
  2. soil can be layered.
  3.  
  4. O HORIZON - fresh and partly decomposed
  5.                       organic matter.
  6. A HORIZON - rich and dark in humus 
  7.                       mixed with mineral
  8.                       particles.
  9. B HORIZON - substances washed down 
  10.                       from A; not as rich.
  11. C HORIZON - weathered rock pieces.
  12. D or R HORIZON - unweathered bedrock. 
  13.