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Bm- 48 to 76 cm, dark grayish brown (l0YR 4/2, moist), loam ;
fine subangular blocky ; slightly sticky, slightly plastic ;
friable when moist, slightly hard when dry ; medium acid ;
abrupt, smooth boundary .
R- 76+ cm, quartzite bedrock .
De~raded Eutric Brunisol
These soils have the general characteristics of Eutric Brunisols
that have an Ae and a Bm horizon .
The Bm horizon may contain some
illuvial clay or some sesquioxides but not enough to meet the
requirements of a Bt or Bf horizon .
These soils have developed on
medium-textured alluvium,
sandy aeolian deposits and glacio-fluvial
and glacio-lacustrine beach deposits .
Degraded Eutric Brunisol developed on a
A representative profile of
fine sandy aeolian deposit
is described as follows :
Profile T50 Degraded Eutric Brunisol (Appendix I : Table 15 ; Plate 7B)
L-F- 2 to 0 cm, very dark brown (l0YR 2/2, moist), forest litter
of aspen leaves and twigs ; neutral ; abrupt, smooth boundary .
Ae- 0 to 12 cm, light gray (l0YR 6/1, moist), silt loam ; single
grained ; non-sticky, non-plastic ; loose when moist, loose
when dry ; extremely acid ; clear, wavy boundary .
Bml- 12 to 61 cm, brown (l0YR 4/3, moist), loamy sand ; singlegrained
; non-sticky, non-plastic ; loose when moist, loose
when dry ; strongly acid ; gradual, wavy boundary .
Bm2- 61 to 107 cm, dark yellowish brown (l0YR 4/4, moist),
sand ; single-grained ; non-sticky, non-plastic ; loose
when moist, loose when dry ; medium acid ; clear, wavy boundary
C- 107 to 150 cm, olive gray (5Y 4/2, moist), sand ; singlegrained
; non-sticky, non-plastic ; loose when moist, loose
when dry ; mildly alkaline ; moderately calcareous .