LOCATION ROINE IAEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Hapludolls
TYPICAL PEDON: Roine fine sandy loam, on a 2 percent slope, in a cultivated field, at an elevation of about 1,380 feet above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; very dark grayish brown (10YR 3/2) and very dark brown (10YR 2/2) fine sandy loam, dark grayish brown (10YR 4/2) dry; weak fine granular structure; friable; common very fine to medium roots between peds; slightly acid; abrupt smooth boundary.
A--8 to 12 inches; very dark grayish brown (10YR 3/2) and dark brown (10YR 3/3) fine sandy loam, grayish brown (10YR 5/2) dry; weak fine subangular blocky structure parting to weak fine granular; friable; common very fine to medium roots between peds; moderately acid; clear smooth boundary. (Combined thickness of the A horizon is 10 to 16 inches.)
Bw1--12 to 22 inches; brown (7.5YR 4/4) fine sandy loam; weak fine and medium subangular blocky structure; friable; common fine and medium roots between peds; slightly acid; gradual smooth boundary.
Bw2--22 to 38 inches; brown (7.5YR 4/4) loamy fine sand; weak fine and medium subangular blocky structure; very friable; common fine and medium roots between peds; slightly acid; gradual smooth boundary.
Bw3--38 to 48 inches; brown (7.5YR 4/4) and yellowish brown (10YR 5/4) stratified loamy fine sand and sandy loam; weak fine and medium subangular blocky structure; very friable; common fine and medium roots; few fine distinct strong brown (7.5YR 5/6) redoximorphic concentrations; common fine prominent grayish brown (10YR 5/2) redoximorphic depletions; neutral; gradual smooth boundary. (Combined thickness of the Bw horizon is 30 to 50 inches.)
2Cg1--48 to 52 inches; grayish brown (10YR 5/2) loam; massive; friable; common fine roots; common fine prominent yellowish brown (10YR 5/6) redoximorphic concentrations; slightly effervescent; slightly alkaline; gradual smooth boundary.
2Cg2--52 to 59 inches; grayish brown (10YR 5/2) silt loam; massive; friable; common fine roots; many medium and coarse rounded yellowish red (5YR 5/6) masses of iron; few medium rounded very dark grayish brown (10YR 3/2) iron-manganese nodules; many fine and medium prominent yellowish brown (10YR 5/6) redoximorphic concentrations; slightly effervescent; slightly alkaline; gradual smooth boundary.
3Cg3--59 to 76 inches; grayish brown (10YR 5/2) clay loam; massive; firm; common fine and medium rounded yellowish red (5YR 4/6) masses of iron; few fine rounded very pale brown (10YR 8/2) calcium carbonate nodules; about 3 percent gravel; many fine and medium prominent strong brown (7.5YR 5/6) redoximorphic concentrations; strongly effervescent; slightly alkaline; gradual smooth boundary.
3Cg4--76 to 80 inches; grayish brown (2.5Y 5/2) clay loam; massive; firm; common fine and medium rounded strong brown (7.5YR 4/6) masses of iron; few medium very dark gray (10YR 3/1) iron-manganese nodules; about 3 percent gravel; common fine prominent yellowish brown (10YR 5/6) redoximorphic concentrations; strongly effervescent; moderately alkaline.
TYPE LOCATION: Clay County, Iowa; about 1.5 miles south and 2 miles east of Everly, Iowa; located about 2,440 feet north and 100 feet west of the southeast corner of section 14, T. 96 N., R. 38 W.; USGS Everly topographic quadrangle; lat. 43 degrees 08 minutes 01 second N. and long. 95 degrees 17 minutes 23 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness--10 to 16 inches
Depth to loamy sediments or glacial till--40 to 60 inches
Ap and A horizons:
Hue--10YR
Value--2 or 3
Chroma--1 to 3
Texture--loam, fine sandy loam, or sandy loam
Clay--10 to 25 percent
Sand--40 to 60 percent
Reaction--moderately acid to neutral
Bw horizon:
Hue--7.5YR or 10YR
Value--4 or 5
Chroma--4 to 6
Texture--fine sandy loam, sandy loam or loamy fine sand
Clay--8 to 18 percent
Sand--55 to 80 percent
Reaction--moderately acid to neutral
2Cg horizon:
Hue--10YR, 2.5Y or 5Y
Value--4 to 6
Chroma--2 to 4
Texture--silt loam or loam
Clay--10 to 33 percent
Sand--20 to 40 percent
Reaction--slightly alkaline or moderately alkaline
3Cg horizon:
Hue--10YR, 2.5Y or 5Y
Value--4 to 6
Chroma--2 to 4
Texture--loam or clay loam
Clay content--25 to 33 percent
Reaction--slightly alkaline or moderately alkaline
Moist bulk density--1.6 to 1.8 g/cc
COMPETING SERIES:
Bertram soils have limestone bedrock within depths of 60 inches.
Dickinson,
Filley,
Flagler,
Ridgeport and
Zenor soils do not have glacial till within depths of 60 inches.
Lowlein soils have bulk density of less than 1.6 g/cc in the lower third of the series control section.
Olin soils have loamy glacial till above depths of 40 inches.
GEOGRAPHIC SETTING:
Parent material--eolian sediments and loamy sediments over glacial till
Landscape--Glaciated uplands
Landform--Summits and back slopes
Slope--0 to 9 percent
Elevation--1,250 to 1,500 feet above sea level
Mean annual air temperature--45 to 50 degrees F
Mean annual precipitation--26 to 30 inches
Frost-free period--145 to 160 days
GEOGRAPHICALLY ASSOCIATED SOILS:
The moderately well drained
Everly and somewhat poorly drained
Wilmonton soils do not coarse textured horizons in the series control section. The moderately well drained
Ocheyedan and
Annieville soils occupy similar positions on the landscape and contain less sand throughout the profile.
The somewhat poorly drained
Fostoria soils occur lower on the landscape and are fine-loamy.
DRAINAGE AND PERMEABILITY:
Drainage class--moderately well drained--seasonally high saturation occurs between depths of 4 and 6 feet during the wettest portions of normal years
Permeability--moderately rapid
Surface runoff--medium
USE AND VEGETATION: Commonly used for row crops. Native vegetation is tall grass prairie
DISTRIBUTION AND EXTENT: MLRA 107, Northwestern Iowa. Roine soils are not extensive
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Clay County, Iowa, 2002
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from 0 to 12 inches (Ap and A horizons); cambic horizon - the zone from 12 to 48 inches (Bw horizons).
This soil was formerly included with the Dickinson, Ocheyedan, and Waukegan soils.
This soil appears to be a common component of "sand stringers" found along glacial margins. Further studies are needed to determine their extent, as well as the source of the gray silts that occur immediately above the glacial till and below the eolian sand deposits.
ADDITIONAL DATA: For results of some laboratory analysis refer to Iowa Agriculture Experiment Station file number 95IA041021 for data on the typical pedon, and to Lincoln Laboratory for data on additional pedons.