Part A: Morphology Flashcards
Minimum thickness requirement to make a horizon?
10 cm
How would you designate an A horizon?
formed at soil surface, accumulation of organic matter
How would you designate an E horizon?
elluviated where clay and oxides have been leached out; bleached
How would you designate a B horizon?
illuvual horizon. involved accumulation of something (clay) and development of structure
How would you designate a C horizon?
structureless, massive. unaffected by pedogenic processes.
What is a transitional horizon?
has the characteristics of two horizons. ex. BE, CB, AB.
When would you use a subordinate b?
a buried genetic horizon. often in a flood plain. can be indicated by an increase in organic matter.
When would you use a subordinate g?
gleyed horizon. the matrix color value is greater than 4 and chroma less than 2.
When would you use a subordinate p?
Ap. plowed or otherwise disturbed horizon.
When would you use a subordinate r?
Cr. Weathered rock.
When would you use a subordinate ss?
presence of slickenslides
When would you use a subordinate t?
accumulation of clay,
