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Profile R 166
Cryic Orthic Eutric Brunisol (Fig . 10 & Appendix I : Table 13)
3 to 0 cm, very dark brown (l0YR 2/2, moist), forest litter
of needles and twigs of jack pine and black spruce ; extremely
acid ; clear, wavy boundary .
0 to 12 cm, brown (l0YR 5/3, moist), silty clay ; medium
granular to shotty ; slightly sticky, slightly plastic ;
firm when moist, hard when dry ; extremely acid ; clear, wavy
boundary .
12 . to 28 cm, pale brown (l0YR 6/3, moist), silty clay ;
medium subangular blocky ; slightly sticky, slightly plastic ;
firm when moist, hard when dry ; medium acid ; clear, gradual
boundary .
28 to 85 cm, very dark gray (5Y 3/1, moist), clay ; weak
medium subangular blocky to amorphous ; sticky and plastic ;
firm when moist, hard when dry ; mildly alkaline ; abrupt,
wavy boundary .
85 to 110 cm, very dark gray (5Y 3/1, moist), frozen clay .
Orthic Eutric Brunisols*
These Orthic Eutric Brunisols affected by cryoturbation are
found in association with nonsorted circles,
stone stripes and steps
(Plate 7A) . The Bmy horizon often contains blobs of Ah or C materials .
The surface of the soil is
always covered with various amounts of
unsorted stones .
A representative profile of cryoturbed Orthic
Eutric Brunisol developed on mixed till and colluvial materials is
described below :
Profile T30A
Orthic Eutric Brunisol* (Fig . 10 & Appendix I : Table 14)
L-F-
Bm-
BC-
C-
Cz-
Bmy-
0 to 48 cm, dark brown (10YR 4/3, moist), loam ; cryoturbed ;
very fine subangular blocky to amorphous ; slightly sticky,
slightly plastic ; friable when moist, slightly hard when dry ;
medium acid ; nonsorted stones on surface ; clear, wavy
boundary .
* Influenced by cryoturbation .