LOCATION PATAPAIKEAAKA ID
Tentative Series
IRD BAG
11/2024
PATAPAIKEAAKA SERIES
The Patapaikeaaka series consists of very deep, poorly drained soils formed in organic material and alluvium. These soils are on flood plains. Slopes are 0 to 1 percent. Mean annual precipitation is about 300 mm, and mean annual temperature is about 8 degrees C.
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Thapto-histic Endoaquolls
TYPICAL PEDON: Patapaikeaaka muck in meadow. (Colors are for moist soil unless otherwise noted).
Oa--0 to 15 cm; black (10YR 2/1) muck, very dark gray (10YR 3/1) dry; 10 percent rubbed fibers; many very fine and fine roots; many very fine irregular pores; neutral (pH 7.0); abrupt smooth boundary.
Ag1--15 to 38 cm; black (2.5/N) silt loam, dark gray (4/N) dry; few fine distinct brown (10YR 4/3) masses of oxidized iron on surfaces along root channels; weak coarse prismatic structure; hard, firm, slightly sticky, slightly plastic; many very fine and fine roots; common very fine tubular pores; neutral (pH 7.1); clear smooth boundary.
Ag2--38 to 64 cm; black (2.5/N) silt loam, very dark gray (3/N) dry; weak coarse subangular blocky structure; hard, firm, slightly sticky, slightly plastic; common very fine, fine, and medium roots; many very fine tubular pores; neutral (pH 7.2); abrupt smooth boundary.
O'a--64 to 117 cm; black (2.5/N) muck, very dark gray (3/N) dry; 10 percent rubbed fibers; few fine and medium roots; many very fine irregular pores; neutral (pH 7.0); abrupt smooth boundary.
C--117 to 150 cm; very dark gray (3/N) silty clay loam, gray (5/N) dry; few fine prominent yellowish brown (10YR 5/4) masses of oxidized iron on surfaces along root channels; massive; very hard, firm, very sticky, very plastic; common very fine and few fine roots; common very fine and few fine tubular pores; strongly effervescent; slightly alkaline (pH 7.6).
TYPE LOCATION: Bingham County, Idaho; USGS topographic quadrangle Michaud; latitude 42.999647 degrees north, longitude 112.5909342 degrees west, datum WGS84.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--9 to 10 degrees C
Thickness of organic surface layer--10 to 20 cm
Thickness of mollic epipedon--30 to 50 cm
Depth to redoximorphic features (iron concentrations/depletions):75 to 125 cm
Depth to high water table--25 to 50 cm
Particle-size control section (weighted averages)
Clay content--18 to 27 percent
O horizon
Hue--10YR or Gley
Value--3 or 4 dry, 2 or 3 moist
Chroma--N or 1 dry or moist
Texture--muck, sapric material
Reaction--pH 7.0 to 7.8
Thickness--10 to 20 cm
A horizons
Hue--10YR or Gley
Value--3 or 4 dry, 2 or 3 moist
Chroma--N or 1 dry or moist
Reaction--pH 7.0 to 7.8
Thickness--40 to 65 cm
O' horizon
Hue--10YR or Gley
Value--3 or 4 dry, 2 or 3 moist
Chroma--N or 1 dry or moist
Texture--muck, sapric material
Reaction--pH 7.0 to 7.8
Thickness--25 to 70 cm
C horizon
Hue--10 YR, 2.5Y, or Gley
Value--5 or 6 dry, 3 or 4 moist
Chroma--N to 1 dry or moist
Texture (less than 2 mm fraction)--silt loam, silty clay loam
Reaction--pH 7.5 to 8.0
COMPETING SERIES:
No competing series
GEOGRAPHIC SETTING:
Landform-flood plain
Elevation-1,340 to 1,372 meters
Slope--0 to 2 percent
Parent material--organic material and alluvium
Mean annual precipitation--250 to 300 mm
Mean annual air temperature--7 to 8 degrees C
Frost-free period--100 to 120 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Poorly drained, 10 to 50 um/sec in the organic horizons and 1.5 to 15 um/sec in the mineral horizons.
USE AND VEGETATION: Patapaikeaaka soils are primarily used for pasture and wildlife habitat. The potential native vegetation is willows, riparian grasses, sedges, and rushes.
DISTRIBUTION AND EXTENT: Patapaikeaaka soils are of small extent in southeastern Idaho; MLRA 11
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Bingham County, Idaho, 2022. Patapaikeaaka series is coined.
REMARKS: Diagnostic horizons and other features:
Mollic epipedon--15 to 64 cm (Ag1 and Ag2 horizons)
Particle-size control section--40 to 115 cm
Patapaikeaaka soils have a mesic temperature regime and an aquic moisture regime.
National Cooperative Soil Survey
U.S.A.