LOCATION GANY ID
Established Series
Rev. JFD/CBR/DJP
05/2021
GANY SERIES
The Gany series consists of very deep, well drained soils that formed in loess influenced colluvium derived from limestone. These soils are on mountain slopes. Slopes are 40 to 70 percent. Mean annual precipitation is about 800 mm, and mean annual air temperature is about 3 degrees C.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Typic Calcicryolls
TYPICAL PEDON: Gany gravelly silt loam in forestland. (Colors are for dry soil unless otherwise noted.)
Oi--0 to 3 cm; slightly decomposed plant material
Oe--3 to 5 cm; moderately decomposed plant material
A1--5 to 10 cm; brown (7.5YR 4/2) extremely gravelly silt loam, dark brown (7.5YR 3/2) moist; weak coarse subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; many very fine roots throughout; many very fine irregular pores; 60 percent by gravel, 5 percent cobbles, 1 percent stones; slightly effervescent; slightly alkaline (pH 7.7); abrupt wavy boundary.
A2--10 to 36 cm; brown (10YR 5/3) extremely gravelly silt loam, dark brown (7.5YR 3/3) moist; moderate fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine, few fine, common medium, and many coarse roots throughout; many very fine irregular pores; 65 percent gravel, 5 percent cobbles, 1 percent stones; calcium carbonate coats on bottom surfaces of rock fragments; strongly effervescent; slightly alkaline (pH 7.8); clear smooth boundary.
Bk1--36 to 76 cm; yellowish brown (10YR 5/4) extremely gravelly loam, brown (7.5YR 4/3) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine, and few medium roots throughout; many very fine tubular pores; 60 percent gravel, 5 percent cobbles, 5 percent stones; calcium carbonate coats on bottom surfaces of rock fragments; violently effervescent; moderately alkaline (pH 8.0); gradual smooth boundary.
Bk2--76 to 127 cm; light yellowish brown (10YR 6/4) extremely gravelly loam, yellowish brown (10YR 5/4) moist; massive; soft, very friable, nonsticky and slightly plastic; common very fine and few medium roots throughout; many very fine tubular pores; 60 percent gravel, 15 percent cobbles, 5 percent stones; calcium carbonate coats on bottom surfaces of rock fragments; violently effervescent; moderately alkaline (pH 8.0); clear wavy boundary
Bkq--127 to 152 cm; light brownish gray (10YR 6/2) extremely gravelly sandy loam, dark grayish brown (10YR 4/2) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine roots throughout; many very fine and common fine irregular pores; 80 percent gravel, 5 percent cobbles, 1 percent stones; calcium carbonate coats on bottom surfaces of rock fragments; 30 percent fine irregular calcium carbonate masses throughout; violently effervescent; moderately alkaline (pH 8.0).
TYPE LOCATION: Teton County, Wyoming; USGS topographic quadrangle Victor; latitude 43.63177 degrees north and longitude 110.98980 degrees west, datum WGS84.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1.0 to 4.0 degrees C.
Thickness of mollic epipedon--20 to 31 cm
Depth to calcic horizon--15 to 38 cm
Particle-size control section (weighted averages)
Clay content--10 to 22 percent
Total rock fragments--40 to 85 percent
Calcium carbonate equivalent--25 to 40 percent
Oi horizon
Reaction--pH 6.1 to 7.3
Organic matter content--60 to 95 percent
Thickness--2 to 4 cm
Oe horizon (when present)
Reaction--pH 6.1 to 7.3
Organic matter content--60 to 95 percent
Thickness--0 to 2 cm
A horizons
Hue--7.5YR, 10YR or 2.5Y
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3
Clay content--12 to 20 percent
Rock fragments--15 to 65 percent; 15 to 65 percent gravel, 0 to 5 percent cobbles, 0 to 1 percent stones
Reaction--pH 7.4 to 8.4
Thickness--20 to 31 cm
Bk horizons
Hue--7.5YR, 10YR, or 2.5Y
Value--4 to 7 dry, 4 to 6 moist
Chroma--2 to 4
Texture (less than 2 mm fraction)--loam or silt loam
Clay content--14 to 22 percent
Rock fragments--60 to 85 percent; 15 to 70 percent gravel, 0 to 25 percent cobbles; 0 to 5 percent stones; 0 to 9 percent boulders
Calcium carbonate equivalent--15 to 30 percent
Reaction--pH 7.4 to 8.4
Thickness--28 to 92 cm
Bkq horizons
Hue--7.5YR, 10YR, or 2.5Y
Value--5 to 7 dry, 4 to 6 moist
Chroma--2 to 6
Texture (less than 2 mm fraction)--loam or sandy loam
Clay content--10 to 16 percent
Rock fragments--60 to 85 percent; 15 to 80 percent gravel, 3 to 25 percent cobbles; 0 to 1 percent stones; 0 to 9 percent boulders
Calcium carbonate equivalent--25 to 60 percent
Reaction--pH 7.9 to 8.4
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Landform--mountain slopes
Elevation--1,590 to 2,990 meters
Slope--40 to 70 percent
Parent material--loess influenced colluvium derived from limestone
Mean annual precipitation--650 to 1,200 mm
Mean annual air temperature--1.0 to 4.0 degrees C
Frost-free period--10 to 40 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; 10 to 50 um/sec
USE AND VEGETATION: Gany soils are primarily used for forestland. The potential native vegetation is mainly subalpine fir, Englemann spruce, Rocky Mountain maple, and mallow ninebark.
DISTRIBUTION AND EXTENT: Gany soils are of large extent in Eastern Idaho; MLRA 43B
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana.
SERIES ESTABLISHED: Targhee National Forest, 1997.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon--20 to 31 cm (A horizons)
Calcic horizon--36 to 152 cm (Bk, Bkq horizons)
Particle-size control section--30 to 105 cm (part of A2, Bk1, and part of Bk2 horizons).
Gany soils have cryic temperature regime and udic moisture regime.
Type location moved from Custer County, ID to Teton County, WY 03/2021.
Taxonomic version: Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.