LOCATION ROYERTON INInactive Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Oxyaquic Hapludalfs
TYPICAL PEDON: Royerton loam on a 2 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; brown (10YR 4/3) loam, pale brown (10YR 6/3) dry; moderate medium granular structure; friable; many very fine and fine roots; many very fine and fine tubular pores; 1 percent pebbles; slightly acid; abrupt smooth boundary. (6 to 10 inches thick)
BE--8 to 12 inches; brown (10YR 5/3) loam; weak medium subangular blocky structure; friable; many very fine and fine roots; many very fine and fine tubular pores; few distinct continuous pale brown (10YR 6/3) silt coatings on faces of peds; 1 percent pebbles; slightly acid; clear smooth boundary. (0 to 5 inches thick)
Bt--12 to 24 inches; brown (7.5YR 4/4) clay loam; moderate medium subangular blocky structure; firm; many very fine roots; many very fine and fine tubular pores; many distinct continuous dark yellowish brown (10YR 4/4) clay films on faces of peds; common medium distinct brown (10YR 5/3) iron oxide depletions in the matrix; common fine irregular, very weakly cemented, very dark gray (10YR 3/1) iron and managanese oxide concretions in the matrix; 1 percent pebbles; neutral; clear wavy boundary. (9 to 35 inches thick)
2BCt--24 to 28 inches; yellowish brown (10YR 5/4) clay loam; weak coarse subangular blocky structure; firm; few very fine roots; few very fine tubular pores; few distinct continuous dark yellowish brown (10YR 4/4) clay films on faces of peds; common medium distinct grayish brown (10YR 5/2) iron depletions in the matrix; few fine irregular, very weakly cemented, very dark gray (10YR 3/1) iron and managanese oxide concretions in the matrix; 3 percent pebbles; slightly effervescent; slightly alkaline; clear wavy boundary. (0 to 13 inches thick)
2Cd--28 to 80 inches; yellowish brown (10YR 5/4) clay loam; massive; very firm; few medium distinct grayish brown (10YR 5/2) iron depletions in the matrix; 5 percent pebbles; strongly effervescent; moderately alkaline
TYPE LOCATION: Delaware, Indiana; about 1/2 mile north of the town of Royerton, 2,400 feet east and 2,050 feet south of the northwest corner of sec. 14, T. 21 N., R. 10 E. USGS Eaton, Ind. topographic quadrangle; lat. 40 degrees 16 minutes 18 seconds N.and long. 085 degrees 21 minutes 34 seconds W.
RANGE IN CHARACTERISTICS: The depth to the base of the argillic horizon is 24 to 48 inches. Depth to free calcium carbonates is 20 to 48 inches. The particle-size control section averages 25 to 35 percent clay and 40 to 60 percent sand.
The upper part of the control section (Ap, E, BE) has hue of 10YR, value of 4 or 5, and chroma of 2 or 3. It is loam. Rock fragments range from 0 to 10 percent. Reaction is strongly acid to neutral.
The second part of the control section (Bt) has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 to 6. It is clay loam, sandy clay loam, loam, or their gravelly analogs and averages 25 to 35 percent clay, and 40 to 60 percent sand. Rock fragments range from 0 to 20 percent. Reaction is strongly acid to neutral.
The third part of the control section (2BCt, 2Bt) has hue of 10YR, value of 4 or 5, and chroma of 3 to 6. It is clay loam or silty clay loam and averages 27 to 40 percent clay, and 15 to 30 percent sand. Rock fragments range from 0 to 5 percent. Reaction is neutral to moderately alkaline. Calcium carbonate equivalent ranges from 0 to 20 percent.
The lower part of the control section (2Cd) has hue of 10YR, value of 4 or 5, and chroma of 3 or 4. It is silty clay loam or clay loam. It averages 27 to 35 percent clay, and 15 to 30 percent sand. Rock fragments range from 0 to 5 percent. Moist bulk density ranges from 1.70 to 1.90 g/cm3. Reaction is slightly alkaline or moderately alkaline. Free carbonates are present and calcium carbonate equivalent ranges from 20 to 35 percent.
COMPETING SERIES: These are the Beech, Blocher, Cadmus, Dormont, El Dara, Glenhall, Miami, Octagon, Rainsville, Rawson, Richland and Summitville series. Beech soils average more than 10 percent rock fragments in the upper part of the control section. Blocher soils are more than 48 inches to the base of the argillic horizon. Cadmus, Glenhall and Octagon soils have a value of less than 4 in the upper part of the control section. Dormont and El Dara soils are more acid than slightly alkaline in the lower part of the control section. Miami and Rainsville soils average less than 27 percent clay in the lower part of the control section. Rawson soils contain more than 35 percent clay in the lower part of the control section. Richland soils average more than 10 percent rock fragments in the lower part of the control section. Summitville soils have paralithic contact within 80 inches.
GEOGRAPHIC SETTING: Royerton soils are on swells on till plains and recessional moraines. Slopes range from 1 to 5 percent. They formed in loamy outwash and clay loam or silty clay loam Wisconsinan glacial till. The mean annual temperature ranges from 51 to 54 degrees F, and the mean annual precipitation ranges from 36 to 40 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Blount, Glynwood, Morley and Pewamo soils. The somewhat poorly drained Blount soils are on similar landforms. The moderately well drained Glynwood and well drained Morley soils are on shoulders and backslopes on lower elevations. The poorly drained Pewamo soils are in depressions.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is medium. Permeability is moderate or moderately slow in the solum and very slow in the underlying dense till. An intermittent perched high water table is at a depth of 2.0 to 3.5 feet in most years.
USE AND VEGETATION: Mainly used to grow corn and soybeans. A few areas are used for growing small grain, mainly wheat, and for hay and pasture. Native vegetation is mixed hardwood forest.
DISTRIBUTION AND EXTENT: East-central and northeastern Indiana. The series is of moderate extent and is distributed mainly in MLRA 111.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES PROPOSED: Delaware County, Indiana, 1996. Source of name - a small community in Delaware County.
REMARKS: Royerton soils have previously been correlated as taxadjuncts and Variants of the Rawson series.
Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface of the soil to a depth of 12 inches (Ap, BE); argillic horizon - the zone from approximately 12 to 28 inches (Bt, 2BCt).