Table 1. Earth material characteristics

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Table 1a.

Map unit	Material	Thickness	Permeability	Erodability
Peat deposits	Peat	1-3 m	Low to high	Low
River sediments	Sand, gravel, slit	2-10 m	High	Variable
Landslide debris	Diamicton, rubble, silt	1-5 m	Medium	Low to high
Slope sediments	Diamicton, sand, gravel	1-5 m	Medium	Variable
Glacial lake sediments	Silt, clayey silt, fine sand	1-30 m	Low to medium	High
Glacial river sediments	Sand, gravel	1-10 m	High	Medium
Glacial till	Diamicton	1-10 m	Low	Low
Sedimentary rocks	Sandstone	n/a	Low	Low
Limestone	Limestone	n/a	Medium	Low
Felsic volcanic rocks	Rayolite, dacite	n/a	Low	Low
Mafic volcanic rocks	Basalt	n/a	Low	Low
Felsic plutonic rocks	Granite, diorite	n/a	Low	Low
Mafic plutonic rocks	Gabbro, ultramafite	n/a	Low	Low

Table 1b.

Map unit	Stability	Aquifer potential	Water quality
Peat deposits	Low	Low	Low
River sediments	Medium	Medium	Medium to high
Landslide debris	Low	Low	n/a
Slope sediments	Medium	Low	n/a
Glacial lake sediments	Low	Low to moderate	High
Glacial river sediments	Medium	High	High
Glacial till	High	Low	na
Sedimentary rocks	High	Low	n/a
Limestone	High	Medium	Medium
Felsic volcanic rocks	High	Low	n/a
Mafic volcanic rocks	High	Low	n/a
Felsic plutonic rocks	High	Low	n/a
Mafic plutonic rocks	High	Lo	n/a

Table 1c.

Map unit	pH buffering potential	Aggregate potential	Morphology
Peat deposits	Low	nil	Flat
River sediments	Low	Medium to high	Flat (floodplain, terrace)
Landslide debris	Low	Low	Hummocky
Slope sediments	Low	Variable	Inclined, rolling
Glacial lake sediments	Medium	Low	Flat, rolling, gullied
Glacial river sediments	Low	High	Flat, hummocky
Glacial till	Low, except in northeast	Low	Rolling
Sedimentary rocks	Low	Low	Hilly, mountainous
Limestone	High	Medium	Hilly, mountainous
Felsic volcanic rocks	Low	Rhyolite medium	Hilly
Mafic volcanic rocks	Low	High	Hilly, mountainous
Felsic plutonic rocks	Low	Low	Hilly, mountainous
Mafic plutonic rocks	Low	Ultramafic moderate	Hilly, mountainous