Geoscience Reference
In-Depth Information
Fig. 13.9
Oxisol, suborder
Ustox. At the top the thin,
imperfectly developed ochric
epipedon (humus A horizon)
lies over the oxic horizon
containing secondary iron
and aluminum oxides and
hydroxides that give the
typical
reddish
color and B
horizon containing products
of strong weathering
developed to a depth of more
than 1 m (WRB: Alisol)
Fig. 13.10
Spodosol,
suborder Orthod. Below the
top ochric epipedon (a poor
humus containing A horizon)
lies the
white-gray
eluviated
E horizon from which iron
oxides were leached out
yielding the
whitish ash
-like
color and accumulating in the
illuvial I horizon. The bottom
is formed by transported
weathered gneiss (WRB:
Podzol)
