LOCATION BADGERPASS CAEstablished Series
TAXONOMIC CLASS: Sandy, isotic, frigid Humic Dystroxerepts
TYPICAL PEDON: Badgerpass loamy coarse sand, on a west southwest facing 25 percent slope under a cover of Whitethorn at an elevation of 6,760 feet (2060.5 meters). When described the soil was moist throughout. (Colors are for dry soil unless otherwise noted).
Oi--0 to 2 inches, (0 to 4 centimeters); slightly decomposed plant material; 1 percent subangular very strongly cemented granitoid rock fragments 2 to 75 millimeters in size. (0 to 2 inches [0 to 4 centimeters] thick)
A--2 to 7 inches, (4 to 18 centimeters); very dark grayish brown (10YR 3/2) loamy coarse sand, very dark brown (10YR 2/2) moist; weak medium subangular blocky and weak medium granular structure; soft, very friable, non-sticky, non-plastic; common fine and very fine and few coarse and medium roots; 5 percent subangular very strongly cemented granitoid rock fragments 2 to 75 millimeters in size; neutral (pH 6.6); abrupt irregular boundary. (4 to 12 inches [10 to 30 centimeters] thick) Lab sample # 97P00881
AC--7 to 18 inches, (18 to 46 centimeters); brown (10YR 5/3) loamy coarse sand, dark brown (10YR 3/3) moist; weak medium granular and subangular blocky structure; soft, very friable, non-sticky, non-plastic; common medium, fine, and very fine and few coarse roots; 8 percent subangular very strongly cemented granitoid rock fragments 2 to 75 millimeters in size; slightly acid (pH 6.3); clear smooth boundary.(8 to 16 inches [20 to 40 centimeters] thick) Lab sample # 97P00882
C1--18 to 37 inches, (46 to 95 centimeters); light olive brown (2.5Y 5/3) coarse sand, dark olive brown (2.5Y 3/3) moist; weak coarse subangular blocky structure; loose, non-sticky, non-plastic; common fine and very fine and few medium and coarse roots; 8 percent subangular very strongly cemented granitoid rock fragments 2 to 75 millimeters in size; moderately acid (pH 6.0); gradual smooth boundary. (16 to 20 inches [40 to 50 centimeters] thick) Lab sample # 97P00883
C2--37 to 55 inches, (95 to 139 centimeters); light yellowish brown (2.5Y 6/3) coarse sand, olive brown (2.5Y 4/3) moist; weak coarse subangular blocky structure; loose, non-sticky, non-plastic; few fine, medium, and very fine roots; 8 percent subangular very strongly cemented granitoid rock fragments 2 to 75 millimeters in size; strongly acid (pH 5.5); abrupt irregular boundary (12 to 20 inches [30 to 50 centimeters] thick).
C3--55 to 67 inches, (139 to 169 centimeters); light gray (2.5Y 7/2) gravelly coarse sand, grayish brown (2.5Y 5/2) moist; weak coarse subangular blocky structure; loose, loose, non-sticky, non-plastic; few fine, medium, and very fine roots; 25 percent subangular very strongly cemented granitoid rock fragments 2 to 75 millimeters in size; strongly acid (pH 5.5).
TYPE LOCATION: Mariposa County, California; Tamarack Creek/Merced River, 2 miles (3.2 kilometers) east of Gin Flat on Tioga Road Burn Area, 200 feet (61.0 meters) east and 100 feet (30.5 meters) north of the southwest corner of section 2, T. 2 S., R. 20 E., Mount Diablo Base and Meridian; Latitude 37 degrees, 46 minutes, 54.4 seconds and Longitude 119 degrees, 44 minutes, 27.4 seconds west, USGS Tamarack Flat, California Quadrangle, NAD83.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is less than 8.0 degrees C (46.4 degrees F). The particle size control section has 0.4 to 4 percent clay and 75 to 98 percent sand. Rock fragment content is 0 to 40 percent, by volume. The particle size control section by weighted average has less than 35 percent rock fragments. Some pedons do not have one or more O horizons. The content of surface rock fragments is 0 to 14 percent.
A horizon
Hue: 10YR (dry and moist)
Value: 3 to 6 (dry) and 2 to 4 (moist)
Chroma: 3 to 5 (dry) and 1 to 3 (moist)
Texture of the fine earth fraction: sand, loamy coarse sand, or loamy sand
Clay content: 0.5 to 4 percent
Rock fragment content: 0 to 25 percent
Organic matter content: 2 to 10 percent
Reaction: very strongly acid to moderately acid
AC horizon
Hue: 10YR (dry and moist)
Value: 4 or 5 (dry) and 3 or 4 (moist)
Chroma: 3 to 5 (dry) and 2 or 3 (moist)
Texture of the fine earth fraction: coarse sand, sand, loamy coarse sand, or loamy sand
Clay content: 0.5 to 4 percent
Rock fragment content: 0 to 15 percent
Organic matter content: 3 to 5 percent
Reaction: strongly acid or moderately acid
Other characteristics: some pedons do not have an AC horizon; a Bw horizon occurs in some pedons
C horizon
Hue: 10YR, 5Y, or 2.5Y (dry and moist)
Value: 5 to 7 (dry) and 3 to 5 (moist)
Chroma: 2 to 4 (dry) and 2 or 3 (moist)
Texture of the fine earth fraction: coarse sand, sand, loamy coarse sand or loamy sand
Clay content: 0.4 to 4 percent
Rock fragment content: 0 to 40 percent
Organic matter: 0.2 to 5 percent
Reaction: very strongly acid to slightly acid
COMPETING SERIES: There are no competing series at this time.
GEOGRAPHIC SETTING: Badgerpass soils are on mountain slopes, moraines, mountain valleys, and ridges. Slope is 0 to 45 percent. Elevation is 4,477 to 8,196 feet (1,364 to 2,498.2 meters). These soils formed in alluvium, colluvium and/or till derived from granitoid rock. The climate is Mediterranean with moist and cold winters and warm and dry summers. The mean annual precipitation is 35 to 49 inches (889 to 1,245 millimeters). Mean annual temperature is 48 to 51 degrees F (8.9 to 10.6 degrees C). Frost-free period is 20 to 60 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These soils are Canisrocks, Craneflat, and Nevadafalls. Canisrocks soils have a cryic temperature regime. Craneflat soils have a sandy-skeletal particle-size class. Nevadafalls soils have a coarse-loamy particle-size class.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained or excessively drained; very low to medium runoff; saturated hydraulic conductivity is high or very high.
USE AND VEGETATION: These soils are used for watershed and recreation in Yosemite National Park. The vegetation is chaparral, mixed coniferous forest, white fir, Jeffrey pine, red fir, lodgepole pine, Douglas fir, and Ponderosa pine.
DISTRIBUTION AND EXTENT: These soils are in the Sierra Nevada in and near Yosemite National Park. The soils of this series are of small extent, about 9,000 acres (3,642 hectares) in size. MLRA 22A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California.
SERIES ESTABLISHED: Yosemite National Park, California, 2006.
REMARKS: Isotic mineralogy class based on lab data. Badgerpass soils have an umbric epipedon. The vegetation according to Preliminary Description of Terrestrial Natural Community of California, Robert F. Holland and Fish and Game, State of California, 1986 is White Fir Mixed Coniferous Forest (84232), Sierra Mixed Coniferous Forest (84230), Montane Chaparral (37500), Ponderosa Pine Mixed Coniferous Forest (84231), and Sierra White Fir Forest (84240), Jeffrey Pine Forest (85110), Upper Moutain Mixed Coniferous Forest (85200), Red Fir Forest (85310), Lodgepole Pine Forest (86110), Jeffrey Pine-Fir Forest (85210), and Douglas Fir Mixed Coniferous Forest (84233).
ADDITIONAL DATA: NSSL lab data pedon number 97P0131 (Pedon ID: 96CA043002) for this Badgerpass typical profile and for pedon numbers 01N0151 (01CA109014) and 02N0612 (01CA043001) are available from the National Soil Survey Laboratory at the National Soil Survey Center in Lincoln, Nebraska.