LOCATION ARENZVILLE WI+IA IL MNEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, nonacid, mesic Typic Udifluvents
TYPICAL PEDON: Arenzville silt loam, on a slope of less than 1 percent, in a pasture, at an elevation of about 262 meters. (Colors are for moist soil unless otherwise stated.)
A--0 to 25 centimeters; dark grayish brown (10YR 4/2) silt loam with thin strata of yellowish brown (10YR 5/4) and very dark grayish brown (10YR 3/2) silt loam, light brownish gray (10YR 6/2) dry; weak medium granular structure; friable; neutral; clear smooth boundary. (12 to 39 centimeters thick)
C--25 to 64 centimeters; stratified brown (10YR 5/3), dark grayish brown (10YR 4/2), and very dark grayish brown (10YR 3/2) silt loam; massive breaking to medium plates along depositional strata; friable; few thin lenses of very fine sand; slightly acid; abrupt wavy boundary. (25 to 64 centimeters thick)
Ab--64 to 102 centimeters; black (10YR 2/1) silt loam; weak medium platy structure parting to weak medium granular; friable; few fine prominent brown (7.5YR 4/4) masses of iron accumulation; slightly acid; gradual smooth boundary. (12 to 62 centimeters thick)
C'--102 to 152 centimeters; dark grayish brown (10YR 4/2) silt loam stratified with a few thin lenses of fine and very fine sand; massive breaking to thick plates along depositional strata; friable; common medium prominent brown (7.5YR 4/4) and dark reddish brown (5YR 3/4) masses of iron accumulation and common medium distinct grayish brown (2.5Y 5/2) iron depletions; neutral.
TYPE LOCATION: Major Land Resource Area (MLRA) 105-Northern Mississippi Valley Loess Hills, Buffalo County, Wisconsin subset; about 8 miles north of Alma; located about 700 feet south and 1,250 feet west of the northeast corner of section 23, T. 23 N., R. 13 W.; USGS Urne topographic quadrangle; lat. 44 degrees 27 minutes 52 seconds N. and long. 91 degrees 55 minutes 04 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Depth to the buried horizon--50 to 150 centimeters
Clay content in the particle-size control section (weighted average)--10 to 18 percent
Sand content in the particle-size control section (weighted average)--5 to 30 percent
Difference between mean summer and mean winter soil temperature--more than 7 degrees C
Ap or A horizon:
Hue--10YR
Value--3 to 5
Chroma--2 or 3
Texture--stratified silt loam but thin strata of coarser texture are common
Clay content--10 to 18 percent
Sand content--10 to 30 percent
Rock fragment content--0 percent
Reaction--moderately acid to slightly alkaline
Matrix colors of 3/2 or 3/3, moist have value of 6 or more, dry or are in thin strata
Color or texture strata are common
C horizon:
Hue--10YR
Value--3 to 5
Chroma--2 to 4
Texture--stratified silt loam but thin strata of coarser texture are common
Clay content--10 to 18 percent
Sand content--5 to 30 percent
Rock fragment content--0 percent
Reaction--moderately acid to slightly alkaline
Matrix colors of 3/2 or 3/3, moist have value of 6 or more, dry or are in thin strata
Color or texture strata are common
Ab horizon:
Hue--10YR
Value--2 or 3
Chroma--1 or 2
Texture--stratified silt loam or silty clay loam but thin strata of coarser texture are common
Clay content--10 to 30 percent
Sand content--5 to 30 percent
Rock fragment content--0 percent
Reaction--moderately acid to slightly alkaline
Bwb or Btb horizons (when present):
Hue--7.5YR or 10YR
Value--4 or 5
Chroma--3 to 6
Texture--stratified silt loam or silty clay loam but thin strata of coarser texture are common
Clay content--10 to 30 percent
Sand content--5 to 30 percent
Rock fragment content--0 percent
Reaction--moderately acid to slightly alkaline
Some pedons with Bwb or Btb horizons do not have C' horizons within 150 centimeters
C' horizon (when present):
Hue--10YR
Value--4 to 6
Chroma--1 to 6
Texture--stratified silt loam but thin strata of coarser texture are common
Clay content--10 to 20 percent
Sand content--5 to 30 percent
Rock fragment content--0 to 15 percent
Reaction--moderately acid to slightly alkaline
Redoximorphic accumulations occur within a depth of 185 centimeters and commonly occur within a depth of 100 centimeters
Some pedons have redoximorphic depletions with chroma of 2 or less occur below a depth of 50 centimeters
COMPETING SERIES: These are
Belvue,
Chaseburg,
Hadley,
Juneau, and
Si series.
Belvue--do not have buried horizons
Chaseburg--do not have buried horizons
Hadley--do not have buried horizons
Juneau--have a buried argillic horizon within a depth of 100 centimeters
Si--have a cambic horizon, have a difference of less than 7 degrees C between mean summer and winter soil temperature and do not have buried horizons
GEOGRAPHIC SETTING:
Parent material--mostly light-colored, relatively recent (post-settlement), mostly silty alluvium overlying buried soils with dark colored A horizons
Landform--flood plains and upland drainageways
Slope--0 to 5 percent
Elevation--210 to 340 meters above sea level
Mean annual air temperature--8 to 11 degrees C
Mean annual precipitation--700 to 850 millimeters
Frost-free period--135 to 160 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Dorchester,
Huntsville,
Lawson, and
Orion soils.
Dorchester--are on landscape positions similar to those of Arenzville soils and have an average clay content of 18 to 24 percent in the particle-size control section
Huntsville--are on landscape positions similar to those of the Arenzville soils and have a mollic epipedon more than 60 centimeters thick
Lawson--are at slightly lower landscape positions on flood plains, have a mollic epipedon more than 60 centimeters thick, and have a frequently saturated zone within a depth of 0.3 meter during the wettest periods of normal years
Orion--are on the slightly lower landscape positions on flood plains, have buried horizons within a depth of 150 centimeters, and have a frequently saturated zone within a depth of 0.3 meter during the wettest periods of normal years
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--moderately well drained--a frequently saturated zone occurs at a depth of 1 meter during April to June in normal years and is considered apparent, occasional saturation occurs above a depth of 1 meter in some pedons but the duration is less than 1 month per year in normal years
Saturated hydraulic conductivity--1.0 to 10.0 micrometers per second (moderately high)
Surface runoff potential--negligible to low
Flooding--rarely to frequently flooded for extremely brief to brief duration
USE AND VEGETATION:
Many areas are pastured. Some areas are wooded. Common trees are red maple, green ash, white ash, bur oak. Some areas are cultivated. The principal crops are corn, small grain, and hay.
DISTRIBUTION AND EXTENT:
Physiographic Division--Interior Plains
Physiographic Province--Central Lowland
Physiographic sections--Wisconsin driftless section, Till plains, and Dissected till plains
MLRAs--Eastern Iowa and Minnesota Till Prairie (104),
Northern Mississippi Valley Loess Hills (105),
Illinois and Iowa Deep Loess and Drift (108), and
Central Mississippi Valley Wooded Slopes (115)
LRR M; west central and southwestern Wisconsin, southeastern Minnesota, northwestern Illinois, and eastern Iowa
Extent--large
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Cass County, Illinois, 1939.
REMARKS:
Particle-size control section--the zone from a depth of 25 to 100 centimeters;
series control section--the zone from the surface to a depth of 150 centimeters.
Diagnostic horizons or features recognized in this pedon include:
ochric epipedon--the zone from the surface to a depth of 25 centimeters (A horizon)
udic moisture regime.
Cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Taxonomy version--Keys to Soil Taxonomy, tenth edition, 2006.
ADDITIONAL DATA:
Laboratory data--National Soil Survey Laboratory, Lincoln, Nebraska - user pedon IDs 77WI049001 and 81IL017007 (http://ssldata.nrcs.usda.gov/).