LOCATION GATEVIEW           CO
Established Series
Rev. GB/JWB
05/2000

GATEVIEW SERIES


The Gateview series consists of very deep, well to somewhat excessively drained soils that formed in alluvial or colluvial material from sedimentary rocks and glacial materials of mixed origin. Gateview soils are on outwash terraces, toeslopes, alluvial fans, till plains, kames, esters, mountains, and low ridges. Slopes are 2 to 40 percent. The mean annual precipitation is about 20 inches and the mean annual temperature is about 36 degrees F.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Haplocryolls

TYPICAL PEDON: Gateview gravelly loam - grassland. (Colors are for dry soil unless otherwise noted).

A1--0 to 10 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark brown (10YR 2/2) moist; moderate fine granular structure; soft, very friable, slightly sticky, slightly plastic; 15 percent pebbles and 5 percent cobble; neutral; clear smooth boundary. (6 to 14 inches thick)

A2--10 to 22 inches; grayish brown (10YR 5/2) very gravelly sandy loam, very dark brown (10YR 2/2) moist; weak medium subangular blocky structure parting to fine granular; slightly hard, very friable; 50 percent pebbles and 5 percent cobbles; neutral; gradual smooth boundary. (10 to 16 inches thick)

C--22 to 60 inches; brown (10YR 5/3) very gravelly sandy loam, dark brown (10YR 4/3) moist; massive; slightly hard, very friable; 50 percent pebbles and 5 percent cobble; neutral. (Several feet thick)

TYPE LOCATION: Gunnison County, Colorado; two miles south of Crested Butte, Colorado, in Sec. 12, T. 14 S., R. 85 W.

RANGE IN CHARACTERISTICS:
Mean annual soil temperature: The mean annual soil temperature is 40 degrees F.
Mean summer soil temperature: about 47 degrees F.
Thickness of mollic epipedon: 16 to 40 inches
Depth to calcareous material: greater than 40 inches
Base saturation: 60 to 100 percent, but typically 90 percent
Particle-size control section (weighted average): sandy loam or loam
Clay content: 5 to 18 percent
Sand content: greater than 35 percent fine or coarser
Rock fragments: 35 to 80 percent, mainly 1/2 to 3 inches in diameter, but includes fragments up to and including boulders

A horizon:
Hue: 2.5Y through 7.5YR
Value: 3 through 5 dry, 2 or 3 moist
Chroma: 1 through 3
Reaction: moderately acid to slightly alkaline

C horizon:
Hue: 2.5Y through 7.5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 2 through 4
Texture: loam, sandy loam or fine sandy loam with rock fragment modifiers
Reaction: moderately acid to slightly alkaline

COMPETING SERIES:
Baconcamp: lithic contact at 20 to 40 inches
Beehunt: greater than 18 percent clay in the control section
Behanco: lithic contact at 40 to 60 inches
Behanin: has cambic horizon
Busterback: sandy-skeletal in lower part of the control section
Croesus: lithic contact at 20 to 40 inches
Dressel: greater than 18 percent clay in the control section
Hapgood: greater than 18 percent clay in the control section
Hobacker: has secondary carbonates
Lionhead: has Bw horizon
Lolon: lithologic discontinuity
Marcetta: greater than 18 percent clay in the control section
Namela: lithic contact at 20 to 40 inches
Papaspila: greater than 18 percent clay in the control section
Parkcity: differentiation not clear
Poleline: has cambic horizon
Povey: has cambic horizon
Tonigut: paralithic contact at 40 to 60 inches
Warshod: paralithic contact at 40 to 60 inches

GEOGRAPHIC SETTING: Parent material: alluvium or colluvium from sedimentary rocks and glacial materials
Landform: outwash terraces, alluvial fans, till plains, hillslopes, kames, and eskers
Slopes: 2 to 45 percent
Elevation: 7,600 to 10,000 feet
Mean annual temperature: 34 to 40 degrees F
Mean summer temperature: 58 degrees F
Mean annual precipitation: 18 to 33 inches
Precipitation pattern: peak periods during winter and least amounts in May and June
Frost-free period: 40 to 70 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Tine and Pierian soils. Both have mollic epipedons less than 16 inches thick and have sandy-skeletal lower sections.

DRAINAGE AND PERMEABILITY: Well to somewhat excessively drained; slow runoff; rapid permeability.

USE AND VEGETATION: These soils are used mainly as native pastureland; however, they may be irrigated to hay crops in places. Principal native vegetation is Thurber fescue, big sage, native bluegrass and scattered aspen.

DISTRIBUTION AND EXTENT: Mountain valleys of central and western Colorado. The series is of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED: Piedra Area, Colorado, 1974.

REMARKS: Diagnostic features:
Mollic epipedon: The zone from 0 to 22 inches. (A horizons)
Last updated by the state 5/00.


National Cooperative Soil Survey
U.S.A.