Classification of the Soils
Mariel Series
Depth class: Very deep
Drainage class: Very poorly drained
Permeability: Moderate
Position on landscape: Bogs in mountain basins
Parent material: Organic material
Slope range: 0 to 3 percent
Elevation: 5,000 to 6,500 feet
Average annual precipitation: 50 to 70 inches
Average annual air temperature: 38 to 42 degrees F
Frost-free period: 10 to 50 days
Frequency of ponding: Frequent
Taxonomic class: Euic Typic Cryohemists
Typical Pedon
Oe1—0 to 5 inches; black (10YR 2/1) mucky peat; about 100 percent unrubbed fibers, 40 percent rubbed; many very fine, fine, and medium roots; strongly acid (pH 5.5); gradual smooth boundary.
Oe2—5 to 15 inches; very dark brown (10YR 2/2) mucky peat; about 85 percent unrubbed fibers, 35 percent rubbed; many very fine and fine roots; strongly acid (pH 5.5); clear wavy boundary.
Oa—15 to 61 inches; dark brown (7.5YR 3/2) muck; about 50 percent unrubbed fibers, 15 percent rubbed; many very fine roots; very strongly acid (pH 5.0).
Typical Pedon Location
Map unit in which located: Mariel-Stirfry complex, 0 to 3 percent slopes
Location in park: Mainly in Sphagnum Bog and Annie Creek bottom; 569016 meters easting and 4745702 meters northing, UTM Zone 10T, NAD 27
Range in Characteristics
Profile:
Depth to bedrock—more than 60 inches
Hue—10YR or 7.5YR
Depth to sapric material—7 to 15 inches
Depth of ponding—6 to 8 inches above the surface in January through June
Depth to water table—3 to 6 inches below the surface in July through December and at the surface in January through June
Oe horizon:
Value—2 or 3 moist
Chroma—1 or 2 moist
Texture—hemic material that is 80 to 100 percent unrubbed fibric material, 25 to 40 percent rubbed
Oa horizon:
Value—2 to 4 moist
Chroma—1 or 2 moist
Texture—sapric material that is 30 to 50 percent unrubbed material, 5 to 15 percent rubbed
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