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moderately sloping topography ;
on ridge moraines a strongly to steeply
sloping topography ;
on hummocky, subdued hummocky and rolling moraines
a strongly to steeply sloping topography and ;
on glaciolacustrine
plains a flat to gently sloping topography .
Vegetation : On well to imperfectly drained glacial till the tree
layer is composed dominantly of aspen, lodgepole and/or jack pine,
white spruce and white birch .
Good growths of white spruce together
with aspen stands were found on well to imperfectly drained glaciolacustrine
deposits . The shrub layer is dominated by alder, Rose sp .
and some willows . , The herb and moss layer is composed dominantly of
Cornus canadensis , Pyrola sp ., Cladonia sp . and feather mosses .
Physical and Chemical Characteristics
The till material contains a
very small amount of stones .
The most common stone sizes are 1/8-inch
to 1/4-inch and constitute only 6 to 10 percent of the total weight of
the sample . The surface of the soil is relatively stone-free ; areas of
shallow till over bedrock, however, contain a greater amount of stones .
The texture of the soils.developed on glacial till varies from silt
loam to clay loam (Appendix I : Tables 6 and 7)'while, on lacustrine
sediment, it is loam textured (Appendix I : Tables 8 and 9) .
The parent material of Orthic Gray Luvisol soils was found to be
the highest in calcium carbonate .
These soils generally have shallower
and weaker profile development than do the Brunisolic Gray Luvisols .
On the other hand,
the calcium carbonate equivalent of the parent
materials of the Brunisolic Gray Luvisols is
lower and these soils also