LOCATION QUIVER IL+IAEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, nonacid, mesic Mollic Fluvaquents
TYPICAL PEDON: Quiver silty clay loam - in a nearly level wooded area at an elevation of 439 feet. (Colors are for moist soil unless otherwise stated.)
Cg1--0 to 9 inches; very dark gray (2.5Y 3/1) with thin strata of dark grayish brown (2.5Y 4/2) silty clay loam, grayish brown (10YR 5/2) dry; weak fine subangular blocky structure; firm; many very fine roots; few fine prominent reddish brown (5YR 4/4) masses of iron accumulation and few fine manganese masses with diffuse boundaries on surfaces along pores and root channels; neutral; clear smooth boundary. (6 to 10 inches thick)
Cg2--9 to 14 inches; dark gray (2.5Y 4/1) with fine strata of dark grayish brown (2.5Y 4/2) silty clay loam, grayish brown (10YR 5/2) dry; weak fine and medium subangular blocky structure; firm; many very fine roots; common fine prominent reddish brown (5YR 4/4) masses of iron accumulation and few fine manganese masses with diffuse boundaries on surfaces along pores and root channels; slightly alkaline; clear smoothboundary.
Cg3--14 to 25 inches; dark gray (2.5Y 4/1) silty clay loam; massive; firm; common very fine roots; many distinct very dark grayish brown (10YR 3/2) organic coats lining pores; common fine prominent reddish brown (5YR 4/4) masses of iron accumulation and few fine manganese masses with diffuse boundaries on surfaces along pores and root channels; slightly alkaline; clear smooth boundary.
Cg4--25 to 34 inches; very dark gray (5Y 3/1) silty clay loam; massive with thin bedding planes; firm; few very fine roots; few distinct very dark grayish brown (10YR 3/2) organic coats lining pores; common fine prominent reddish brown (5YR 4/4) masses of iron accumulation and few fine manganese masses with diffuse boundaries on surfaces along pores and root channels; slightly alkaline; clear smooth boundary.
Cg5--34 to 45 inches; dark gray (5Y 4/1) silty clay loam; massive with thin bedding planes; firm; few distinct very dark grayish brown (10YR 3/2) organic coats lining pores; many fine prominent dark red (2.5YR 3/6) masses of iron accumulation and few fine manganese masses with diffuse boundaries on surfaces along pores; slightly alkaline; clear smooth boundary.
Cg6--45 to 65 inches; dark grayish brown (2.5Y 4/2) silty clay loam; massive; firm; many medium prominent dark red (2.5YR 3/6) masses of iron accumulation with diffuse boundaries on surfaces along pores; slightly alkaline.
TYPE LOCATION: Fulton County, Illinois; about 1 1/2 miles south of Banner; 1,990 feet north and 1,490 feet east of the southwest corner of sec. 24, T. 6 N., R. 5 E.; USGS Duck Island topographic quadrangle; lat. 40 degrees 29 minutes 09 seconds N. and long. 89 degrees 53 minutes 25 seconds W., NAD 27.
RANGE IN CHARACTERISTICS: The series control section ranges from slightly acid to moderately alkaline and generally becomes less acid with depth. Free carbonates typically do not occur within a depth of 60 inches. Redox concentrations are throughout. The particle size control section averages between 20 and 35 percent clay and less than 15 percent fine sand or coarser. Rock fragments are absent within a depth of 60 inches.
The upper part of the series control section (Cg1 and Cg2 horizons) has hue of 10YR, 2.5Y or is neutral; value of 2 or 3; and chroma of 0 to 2, and contains fine strata of higher value. It typically is silty clay loam but is silt loam in some pedons.
Some pedons have an A horizon with the same hue and chroma as Cg1 and Cg2, and also has the same textures..
The lower part of the series control section (Cg3 through Cg6 horizons) has hue of 10YR, 2.5Y, 5Y, or is neutral; value of 3 to 6; and chroma of 0 to 2. It typically is silty clay loam, but some pedons are silt loam or contain strata with less clay or more sand or both.
COMPETING SERIES: These are the Kezan and Wayland series. Kezan soils receive a lower mean annual precipitation. Wayland soils allow up to 30 percent rock fragments between depths of 36 and 60 inches.
GEOGRAPHIC SETTING: Quiver soils are in abandoned oxbow lakes and other low-lying areas that generally occur within the meander belt of flood plains. Slope ranges from 0 to 2 percent. These soils formed in dark colored, non- calcareous, recently deposited silty alluvium. Mean annual temperature varies from 50 to 54 degrees F, and mean annual precipitation varies from 35 to 40 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Beaucoup, Tice and Wakeland soils. The poorly drained Beaucoup soils are on similar parts of flood plains nearby. Somewhat poorly drained Tice soils are on summits of broad rises. The somewhat poorly drained Wakeland soils commonly are on flood plains of smaller streams or are closer to the upland source of sediments on larger flood plains.
DRAINAGE AND PERMEABILITY: Very poorly drained. The potential for surface runoff is slow or ponded. Permeability is moderately slow. Flooding from stream overflow is frequent during the late winter and throughout the spring. These soils have an apparent water table at a depth of .5 foot above the surface to 1.0 foot below during the spring in most years.
USE AND VEGETATION: Most areas of Quiver soils are wooded. Native vegetation is mixed deciduous trees.
DISTRIBUTION AND EXTENT: Western Illinois; MLRA 115- Central Mississippi Valley Wooded Slopes and MLRA 108-Illinois and Iowa Deep Loess and drift. The soils of this series are moderately extensive.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Fulton County, Illinois, 1995. Named for a creek in Mason County.
REMARKS: Diagnostic horizons and features recognized in this pedon are: fluventic properties: irregular decrease in organic carbon; aquic conditions - chroma of 2 or less and redox concentrations in the Cg3 horizon.