Detailed Soil Survey of the Mount Revelstoke Summit Area.

75Soil Map Unit 3The imperfectly to "moderately" poorly drained soils of MapUnit 3 occur in poorly defined snowmelt runoff channels (Plate 3) anddepressional areas of late snow cover and seasonal ponding .These soilshave deep (20 to 40 cm), dark colored organic (Oh) horizons that lookvery much like Ah horizons ; however, they contain 30 to 65 percentorganic matter .Classification :These soils are classified as Orthic and Cumulic Regosols asa result of their Oh, C or Ohl, Oh2, Oh3,C horizon sequences with brightlycolored C horizons (no indication of gleying processes) .Associated Map Units :These soils occur in close association with the peaty RegoGleysols of Map Unit 5 in some groundwater discharge areas . Map Unit 4soils have similar horizonation to Map Unit 3 soils ; however, the latterare poorly and very poorly drained Gleysols .Vegetation :Vegetation is made up of communities with Luetkea pectinatadominant in the snowmelt drains and Carex nigricans dominant in the basinareas . Occurring with the Luetkea pectinata are such species as Phyllodoceempetriformis , Erigeron peregrinus and the occasional Abies lasiocarpa .Pedon Description A :(Soil pedons representative of this map unit were sampled in two locations .)Described by : L . KnapikDate : August 29, 1973Location :S-3A