LOCATION MOUNTAINVIEW       ID
Established Series
Rev. LMR-GHL-HBM
01/2000

MOUNTAINVIEW SERIES


The Mountainview series consists of very deep, very poorly drained organic soils that formed in residual material from sedges, rushes, and cattails intermixed with mineral layers of medium or moderately coarse textured soil. Permeability is moderately rapid. Mountainview soils are in basins on low terraces and stream bottoms. Slopes are less than 2 percent. The average annual precipitation is about 20 inches and the average annual air temperature is about 50 degrees F.

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.


National Cooperative Soil Survey
U.S.A.