LOCATION CASTELLEIA COEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Typic Haplocryalfs
TYPICAL PEDON: Castelleia loam - forest. (Colors are for dry soil unless otherwise noted.)
01--3 to 1 inch; recent forest litter.
02--1 to 0 inch; decomposed humus layer (01 and 02 horizons range from 2 to 4 inches thick.)
A1--0 to 4 inches; very dark brown (10YR 2/2) loam; moderate medium granular structure; soft, very friable, slightly sticky, nonplastic; common roots; 5 percent gravel; strongly acid; clear wavy boundary. (1 to 5 inches thick)
A2--4 to 10 inches; dark grayish brown (10YR 4/2) loam; moderate fine and medium subangular blocky structure; soft, very friable, slightly sticky, nonplastic; common roots; 5 percent gravel; strongly acid; gradual wavy boundary. (5 to 10 inches thick)
A&B--10 to 19 inches; grayish brown (10YR 5/2) loam; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; many fine pores; thin patchy clay films on peds and in pores; common roots; 5 percent gravel; strongly acid; gradual wavy boundary. (6 to 12 inches thick)
B2t--19 to 26 inches; dark brown (10YR 5/2) clay loam; moderate medium subangular blocky structure; slightly hard, firm, slightly sticky, slightly plastic; few pores; distinct patchy clay films on peds and in pores; 5 percent gravel; strongly acid; gradual wavy boundary. (6 to 10 inches thick)
C1--26 to 32 inches; brown (10YR 5/3) moist; very stony sandy clay loam; massive; very hard, very firm, slightly sticky, slightly plastic; few roots; 40 percent stones, 15 percent gravel; medium acid; gradual wavy boundary. (6 to 24 inches thick)
IIC2--32 to 120 inches; brown (10YR 5/3) extremely stony light clay loam, dark brown (10YR 4/3) moist; massive; hard, friable, slightly sticky, slightly plastic; 65 percent stones; 15 percent gravel; medium acid; clear smooth boundary.
IIC3--102 inches; shale.
TYPE LOCATION: Archuleta County, Colorado; S 1/2 of Sec. 35, T. 34 N., R. 1 E.
RANGE IN CHARACTERISTICS: Rock fragments range from 0 to 35 percent in a major part of the solum but increase to more than 35 percent below the solum.
The A1 horizon has hue of 2.5Y through 7.5YR, value of 3 through 7 dry, 2 through 6 moist, and chroma of 1 through 4. It is medium acid or strongly acid.
The A2 horizon has hue of 2.5Y through 7.5YR, value of 5 through 7 dry, 4 through 6 moist, and chroma of 1 through 6. It is medium acid or strongly acid.
The B2t horizon has hue of 2.5Y through 7.5YR, value of 5 through 7 dry, 4 through 6 moist, and chroma of 1 through 6. It is loam or clay loam with 18 to 35 percent clay. This horizon is slightly acid or medium acid.
The C horizon has hue of 2.5Y through 7.5YR. It is loam, clay loam, or sandy clay loam with 18 to 35 percent clay. This horizon is slightly acid or medium acid.
COMPETING SERIES: These are the Ansel, Edloe, Grimstone, Hierro, Indart, Jacquette, Lick, Limber, Peeler, Perceton, Polvadera, Sapphire, Schofield, Shule, Swapps, Swifton, Tahoma, Tongue River, Trapper, Uinta, Whitefish, and Woodrock series. Ansel, Jacquette, Peeler, and Swifton soils have less than 35 percent rock fragments in any part of the upper 40 inches of the profile. Ansel and Lick soils lack A&B horizons more than 3 inches thick. Jacquette soils have sola thicker than 55 inches. Edloe, Limber, Sapphire, Schofield, Shule, Swapps, and Woodrock soils have a lithic contact at depths of less than 40 inches. Grimstone, Indart, Perceton, Polvadera, and Tongue River soils have a paralithic contact at depths of less than 40 inches. Hierro and Uinta soils have hue of 5YR or redder. Tahoma soils lack A2 and A&B horizons, and have B2t horizons thicker than 25 inches. Trapper and Whitefish soils are calcareous above depth of 40 inches.
GEOGRAPHIC SETTING: The Castelleia soils are on gently to moderately steeply sloping alluvial fans or hillsides. Slopes usually range from about 2 to 30 percent. These soils formed in thick, noncalcareous, stony medium to moderately fine materials weathered locally from quartz, latite, or similar rocks. At the type location the mean annual precipitation is about 25 inches. Mean annual temperature is 38 degrees F., mean summer temperature is 54 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Muggins soils. Muggins soils are fine textured.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: The soils are used for timber production, wildlife habitat, and watershed area. Principal native plants are aspen, white fir, and snowberry.
DISTRIBUTION AND EXTENT: South-central Colorado. This series is of moderate extent.
MLRA OFFICE RESPONSIBLE: Lakewood, Colorado
SERIES ESTABLISHED: Archuleta County (Piedra Area), Colorado, 1974.
REMARKS: Last updated by the state 5/74.