Detailed Soil Survey of the Mount Revelstoke Summit Area.

silt loam to loamy sand . Parent materials consist of slope wash depositscovering thetill to varying depths or in some cases the parent materialconsists of modified till .The following is a brief description of aPeaty Rego Humic Gleysol typical of map unit 5 soils .Horizon Depth (cm) Color Texture I C .F . % O .M .Of 20 - 0 dark brown - - -Ahg 0 - 35 very dark gray SiL 5 10 .8Cg 35+ greenish gray LCS 20 -These soils are separated from those of map unit 4 by thepresence of Of and Ahg horizons and the absence of thick Oh layers .Theyare separated from all other soils on the basis of drainage :These soilsare wet throughout the season of use, with the water table at the surface .They are therefore severely limited for recreational use .Since the soilsare wet due to groundwater seepage, artificial drainage would be difficult .Soil Map Unit 6(Sombric Ferro-Humic Podzol)These soils occur under earth hummocks in small basins wheredrainage is restricted (Plate 5-a) .The soil surface has an irregularmicrotopography due to the earth hummock pattern, with the hummocks beingapproximately 80 cm in diameter and having a relief of up to 20 cm .Thesehummocks support a continuous cover of Carex nigricans .The soils areimperfectly to somewhat poorly drained with ponding occurring in July .The upper soil horizon boundaries are wavy, reflecting thesurface morphology of the hummocks ; however, the horizons are not disruptedor folded (Plate 5-b) .This perhaps reflects rather weak frostaction or cryoturbation processes .