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Orthic Gray Luvisol<br />
These soils have the general characteristics of the Gray<br />
Luvisols ; i .e . they have organic surface horizons (L-H), lightcolored<br />
Ae and Bt horizons .<br />
These soils have developed on either<br />
very strongly calcareous glacial till (profile T1)<br />
or strongly<br />
calcareous lacustrine deposits (profile T17) . The profile descriptions<br />
of these soils are as follows :<br />
Profile Tl Orthic Gray Luvisol (Appendix I : Table 6)<br />
L-H- 4 to 0 cm, very dark brown (l0YR 2/2, moist), forest litter<br />
of needles and twigs ; strongly acid ; abrupt, wavy boundary .<br />
Ae- 0 to 3 cm, light gray (l0YR 7/1, moist), silt loam ; fine<br />
platy ; non-sticky, non-plastic ; loose when moist, loose<br />
when dry ; extremely acid ; abrupt, irregular boundary .<br />
Bt- 3 to 19 cm, yellowish-brown (10YR 5/6, moist), clay loam ;<br />
fine subangular blocky ; slightly sticky, slightly plastic ;<br />
firm when moist, hard when dry ; extremely acid ; abrupt,<br />
smooth boundary .<br />
C- 19 to 54 cm, light brownish-gray (l0YR 6/2, moist), silt<br />
loam ; fine subangular blocky ; slightly sticky, slightly<br />
plastic ; firm when moist, hard when dry ; mildly alkaline ;<br />
very strongly calcareous .<br />
Profile T17 Orthic Gray Luvisol (Appendix I : Table 7)<br />
L-H- 3 to 0 cm, very dark grayish-brown (l0YR 3/2, moist), forest<br />
litter of spruce needles, aspen leaves and twigs ; medium<br />
acid ; abrupt, smooth boundary .<br />
Ae- 0 to 10 cm, very pale brown (l0YR 3/2, moist), silt loam ;<br />
very fine platy ; non-sticky, non-plastic ; very friable<br />
when moist, soft when dry ; very strongly acid ; abrupt,<br />
irregular boundary .
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