LOCATION MOUNTAINVIEW IDEstablished Series
TAXONOMIC CLASS: Euic, mesic Fluvaquentic Haplosaprists
TYPICAL PEDON: Mountainview muck - sedge and grass pasture. (Colors are for dry soil unless otherwise noted.)
Oa1--0 to 2 inches; dark grayish brown (10YR 4/2) muck; very dark brown (10YR 2/2) moist; strong very fine granular structure; soft, very friable, moderately sticky and moderately plastic; many roots; neutral (pH 6.6); abrupt wavy boundary. (0 to 4 inches thick)
Oa2--2 to 18 inches; dark gray (N 4/0) muck; black (10YR 1/1) moist; very weak medium platy and weak medium subangular blocky structure parting to weak fine granular; hard, firm, slightly sticky, slightly plastic; many roots; many fine and medium pores; neutral (pH 6.6); gradual smooth boundary. (10 to 16 inches thick)
Oa3--18 to 38 inches; dark gray (N 4/0) muck; black (10YR 1/1) moist; weak medium granular structure; hard, friable, slightly sticky and slightly plastic; many roots; many fine pores; neutral (pH 7.2); abrupt smooth boundary. (15 to 30 inches thick)
2Cg--38 to 41 inches; light gray (5YR 7/1) moist loam; common, fine prominent, dark yellowish brown (10YR 4/4), few, fine distinct very dark gray (2.5Y 3/1) and pale brown (10YR 6/3) redox features; massive; very hard, firm, slightly sticky, slightly plastic; many roots; many fine pores; slightly alkaline (pH 7.4); abrupt smooth boundary. (2 to 6 inches thick)
3O'a--41 to 57 inches; dark gray (N 4/0) muck; black (10YR 1/1) moist; weak, very fine granular structure; very hard, friable, slightly sticky; many roots; many very fine pores; slightly alkaline (pH 7.4); contains one or more thin layers of mineral soil; gradual smooth boundary. (10 to 20 inches thick)
3Oi1--57 to 72 inches; black (N 2/0) containing about 75 percent peat, dark brown (7.5YR 3/2) moist; and about 25 percent muck, black (10YR 2/1) moist; slightly alkaline (pH 7.8).
TYPE LOCATION: Gem County, Idaho; 1,150 feet north and 2,840 feet west of the southeast corner, sec. 23, T. 6 N., R. 2 W.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 47 to 54 degrees F
Depth to mineral layers - 30 to 50 inches
Surface tier
Texture - muck or peat
Reaction - slightly acid, neutral, or slightly alkaline
Carbonates - noncalcareous or slightly calcareous
Subsurface tier
Texture (organic layers) - muck
Mineral soil layers - loam, fine sand loam, or silt loam (occurring below 30 inches)
Reaction - slightly acid, neutral, slightly alkaline
Bottom tier - organic with thin mineral layers or mineral throughout Texture if organic - muck, with thin mineral layers (muck peat and peat below 51 inches)
Texture if mineral - loam, fine sandy loam, or silt loam
COMPETING SERIES: These are the Kerston series in the same family and Peteetneet and Tepete. Kerston soils have mineral soil layers above 30 inches and occur in a humid climate. Peteetneet soils have no mineral horizons. Tepete soils have hemic materials and have mean annual soil temperature colder than 47 degrees F.
GEOGRAPHIC SETTING: Mountainview soils are in basins on low terraces and bottomlands. Elevations range from 1,000 to 4,000 feet. Slopes are less than 2 percent. The soils formed in decomposing rushes, sedges, reeds, cattails and other water-loving herbaceous plants. The mineral horizons were formed from mixed alluvium. The climate is semi-arid or subhumid with mean annual precipitation of 10 to 25 inches and the frost-free period ranges from 100 to 180 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are Baldock, Bowman, Black Canyon, Lahonton, and Lethon series, which are mineral soils.
DRAINAGE AND PERMEABILITY: Very poorly drained, very slow runoff or ponded, moderately rapid permeability.
USE AND VEGETATION: Used mainly for pasture, but some areas have been drained and produce small grain and hay. Natural vegetation is rushes, sedges, cattails and other water-loving plants.
DISTRIBUTION AND EXTENT: Southwestern, Idaho. The soil is inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Gem County, Idaho, 1949.