LOCATION NEWCOMER MOEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Mollic Hapludalfs
TYPICAL PEDON: Newcomer silt loam - on a 10 percent northeast-facing slope in pasture. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; weak fine platy structure parting to weak fine granular; friable; common fine roots; slightly alkaline; abrupt smooth boundary. (6 to 9 inches thick)
Bt1--7 to 13 inches; dark yellowish brown (10YR 4/6) silt loam; weak fine subangular blocky structure; firm; common fine roots; common distinct clay films on faces of peds; neutral; clear smooth boundary.
2Bt2--13 to 27 inches; dark yellowish brown (10YR 4/6) loam; moderate fine subangular blocky structure; firm; few fine roots; common distinct clay films on faces of peds; common black iron and manganese stains; moderately acid; clear smooth boundary. (Combined thickness of the Bt horizons is 10 to 35 inches.)
2BC--27 to 34 inches; multi-colored yellowish brown (10YR 5/6), strong brown (7.5YR 5/6), and grayish brown (10YR 5/2) loam; weak medium prismatic structure; firm; common distinct clay flows in vertical cleavage planes; many black iron and manganese stains; common silt coats; moderately acid; clear smooth boundary. (0 to 12 inches thick)
2Cr--34 to 50 inches; multi-colored soft sandstone; common clay flows along fractures.
2R--50 inches; hard sandstone.
TYPE LOCATION: Chariton County, Missouri; about 7 miles east of Triplett; 650 feet west and 850 feet north of the southeast corner of Sec. 17, T. 54 N., R. 19 W.
RANGE IN CHARACTERISTICS: The thickness of the solum and depth to soft sandstone ranges from 20 to 40 inches. Hard bedrock is at a depth greater than 40 inches. In some pedons there are up to 15 percent coarse fragments of sandstone throughout the B and C horizons.
The A horizon has color value of 2 or 3, 4 or 5 dry and chroma of 2 or 3. It is silt loam or loam. Reaction commonly is moderately acid to neutral, but includes slightly alkaline. Some pedons have an E or BE horizon.
The Bt and 2Bt horizons have hue of 10YR to 5YR, value of 4 or 5, and chroma of 3 to 6. They are silt loam, loam or clay loam. Reaction is strongly acid to neutral.
The 2BC horizon, where present, has hue of 5YR to 2.5Y, value of 4 to 7 and chroma of 1 to 8. It typically is loam, but includes sandy clay loam, sandy loam, and clay loam. This horizon has few to many clay flows and clay pockets. Reaction is strongly acid to neutral. Some pedons have a 2C horizon.
COMPETING SERIES: These include the Argyle, Baltimore, Bassett, Blooming, Cadmus, Caleb, Dowagiac, Dunbridge, Gara, Glenhall, Koronis, Lauramie(T), Lester, Longlois, Lydick, Mohawk, Neda, Octagon, Oneco, Orwood, Racine, Razort, Renox, Sunfield, Taopi, Waucoma and Winneshiek series. All of these series other than Dunbridge and Winneshiek are deeper than 40 inches to lithic or paralithic contact. Dunbridge and Winneshiek soils have a lithic contact at depths of 20 to 40 inches.
GEOGRAPHIC SETTING: Newcomer soils are on gently sloping to steep uplands. Slope ranges from 2 to 35 percent. The soils formed in a thin mantle of loess and residuum from sandstone interbedded with shale or in residuum. Mean annual temperature ranges from 49 to 57 degrees F, and mean annual precipitation ranges from 32 to 42 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the fine textured Armstrong, Gosport, Grundy, Lagonda, and Winnegan soils and the fine-silty textured Knox and Wakenda soils. The Grundy, Knox, and Wakenda soils are on upland ridges above the Newcomer soils. The Armstrong, Gosport, Lagonda, and Winnegan soils are on similar positions.
DRAINAGE AND PERMEABILITY: Well-drained. Runoff is medium or rapid. Permeability is moderate.
USE AND VEGETATION: Primarily used for pasture and hay crops. Some areas are used for growing corn, soybeans, and small grains and some areas are in deciduous forest. Native vegetation is mixed prairie grass and hardwood forest.
DISTRIBUTION AND EXTENT: Newcomer soils are extensive in north-central Missouri.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Saline County, Missouri, 1991.
REMARKS: Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface to a depth of 7 inches; argillic horizon - the zone from approximately 7 to 27 inches (Bt1 and Bt2 horizons); paralithic contact - 34 inches.