Wetland Classification and Mapping of Seward, Alaska
Mike Gracz
Doug Van Patten
Soil Subgroup Descriptions
TYPIC HUMICRYODS, by Douglas J Van Patten
Depth class: very deep
Drainage class: well drained
Parent material: colluvium
Landform: mountain footslopes
Slopes: 10 to 75 percent
Mean annual precipitation: 68 inches
Mean annual temperature: 40 degrees F.
TAXONOMIC CLASS: Loamy-skeletal, mixed, Typic Humicryods
TYPICAL PEDON: Typic Humicryods
silt loam - on a east facing slope of 61 percent under
Oi--0 to 1 inches; very dark brown (10YR 2/2) moderately decomposed plant material; many very fine and fine roots; abrupt wavy boundary.
E--1 to 5 inches; very dark grayish brown (10YR 3/2) very channery silt loam; very fine granular structure; very friable, nonsticky and nonplastic; common very fine, fine, and medium roots; 5 percent gravel, 30 percent channers, and 10 percent flaggs; extremely acid (pH 4.0); clear wavy boundary.
Bhs--5 to 12 inches; reddish brown (2.5YR 2.5/1) very channery silt loam; very fine granular structure; very friable, nonsticky and nonplastic; common very fine, fine, and medium roots; smeary; 5 percent gravel, 30 percent channers, and 15 percent flaggs; extremely acid (pH 4.5); clear wavy boundary.
Bs--12 to 23 inches; dark reddish brown (5YR 3/4) very channery silt loam; very fine granular structure; very friable, nonsticky and nonplastic; common very fine, fine, and medium roots; smeary; 5 percent gravel, 30 percent channers, and 20 percent flaggs; strongly acid (pH 5.4); clear wavy boundary.
CR--23 to 25 inches; extremely flaggy silt loam; 10 percent gravel, 40 percent channers, and 40 percent flaggs.
LOCATION: (PEDON S1001) Two Lakes Park Seward, Alaska: in the SE1/4 of the SE1/4 of the SE1/4 Sec. 4, T.1S., R.1W., Seward Meridian; UTM north 6666411, east 363985, zone 6
REMARKS: Diagnostic features and horizons in this profile include:
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Albic horizon 1 to 5 inches (E horizon)
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Spodic horizons 5 to 23 inches (Bhs and Bs horizons)
