LOCATION GLENCOE MN
Established Series
Rev. KDS-TCJ-TWN
02/2014
GLENCOE SERIES
The Glencoe series consists of very deep, very poorly drained soils that formed in loamy sediments from till. These soils are in closed depressions on moraines. Slope ranges from 0 to 1 percent. Mean annual air temperature is about 8 degrees C. Mean annual precipitation is about 735 millimeters.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Cumulic Endoaquolls
TYPICAL PEDON: Glencoe clay loam, on a concave slope of less than 1 percent, in a depression on a ground moraine, in cultivated field. (Colors are for moist soil unless otherwise noted.)
Ap--0 to 23 centimeters; black (N 2/0) clay loam, black (N 2/0) dry; moderate fine subangular blocky structure; friable; about 1 percent gravel; neutral; abrupt smooth boundary.
A--23 to 99 centimeters; black (10YR2/1) clay loam, very dark gray (10YR 3/1) dry; weak fine subangular blocky structure; friable; about 1 percent gravel; neutral; gradual irregular boundary.
Bg--99 to 127 centimeters; grayish brown (2.5Y 5/2) clay loam; weak fine medium subangular blocky structure; friable; common medium distinct light olive brown (2.5Y 5/6) iron concentrations; about 3 percent gravel; neutral; gradual irregular boundary.
Cg1--127 to 173 centimeters; grayish brown (2.5Y 5/2) loam; massive; friable; common medium distinct light olive brown (2.5Y 5/6) iron concentrations; about 4 percent gravel; slightly effervescent; slightly alkaline; gradual wavy boundary.
Cg2--173 to 203 centimeters; olive gray (5Y 5/2) loam; massive; friable; few masses of carbonates on faces of peds; common medium prominent strong brown (7.5YR 5/8) iron concentrations; about 4 percent gravel; strongly effervescent; slightly alkaline.
TYPE LOCATION: Major Land Resource Area (MLRA) 103-Central Iowa and Minnesota Till Prairies, Jackson County, Minnesota subset; about 6 miles west and 3 miles south of Jackson; located about 250 feet east and 150 feet south of the northwest corner of section 10, T. 101 N., R. 36 W.; USGS Lakefield SW topographic quadrangle; lat. 43 degrees 34 minutes 22.6 seconds N. and long. 95 degrees 09 minutes 14.3 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Thickness of mollic epipedon--60 to 200 centimeters
Depth to carbonates--75 to more than 150 centimeters
Clay content of the particle-size control section (weighted average)--25 to 35 percent
Sand content of the particle-size control section (weighted average)--15 to 30 percent fine sand and coarser
Ap and A horizon:
Hue--10YR, 2.5Y, 5Y, or is neutral
Value--2 or 3
Chroma--0 to 1
Texture--clay loam, silty clay loam, loam, mucky clay loam, mucky silty clay loam, or mucky loam
Clay content--25 to 35 percent
Sand content--15 to 40 percent
Rock fragment content--0 to 5 percent
Reaction--pH 6.1 to 7.8
Thickness--40 to 80 centimeters
Some pedons have an O horizon up to 15 centimeters thick
AB horizon (when present):
Hue--2.5Y, 5Y, or is neutral
Value--2 or 3
Chroma--0 to 2
Texture--clay loam, silty clay loam, or loam
Clay content--25 to 35 percent
Sand content--15 to 40 percent
Rock fragment content--0 to 5 percent
Reaction--pH 6.1 to 7.8
Thickness--0 to 65 centimeters
Bg horizon:
Hue--2.5Y, 5Y, or is neutral
Value--2 to 5
Chroma--1 or 2
Texture--clay loam, silty clay loam, or loam
Clay content--25 to 35 percent
Sand content--15 to 40 percent
Rock fragment content--0 to 5 percent
Reaction--pH 6.1 to 7.8
Thickness--0 to 75 centimeters
Some pedons have B horizons that have a slight clay increase relative to the A horizons
Bkg horizon (when present):
Hue--2.5Y or 5Y
Value--4 to 6
Chroma--1 to 4
Texture--clay loam, silty clay loam, or loam
Clay content--25 to 35 percent
Sand content--15 to 40 percent
Rock fragment content--2 to 10 percent
Calcium carbonate equivalent--10 to 20 percent
Reaction--pH 7.4 to 8.4
Thickness--0 to 50 centimeters
Cg horizon:
Hue--2.5Y or 5Y
Value--4 to 6
Chroma--1 to 4
Texture--clay loam, silty clay loam, or loam
Clay content--25 to 35 percent
Sand content--15 to 40 percent
Rock fragment content--2 to 10 percent
Calcium carbonate equivalent--10 to 20 percent
Reaction--pH 7.4 to 8.4
Moist bulk density--1.35 to 1.55 g/cc
COMPETING SERIES: These are the
Arctander,
Coit,
Coland,
Comfrey,
Delft,
Excello,
Gielow,
Gus,
James Canyon,
Keddie,
Kimmerling,
Konner,
Lundlake, McClave,
Peoh,
Romnell,
Roundval,
Shandep, and
Wenas series.
Arctander--have a clay content of 10 to 18 percent and a sand content of 30 to 75 percent in the lower third of the series control section
Coit--have carbonates within a depth of 75 centimeters
Coland---do not have rock fragments in the series control section
Comfrey--do not have rock fragments in the series control sections
Delft--are on foot slopes and toe slopes and are not frequently saturated at the surface of the soil for more than 2 months during the wettest periods of years when precipitation is within one standard deviation of the 30 year mean of annual precipitation
Excello--have a pH range of 6.1 to 7.3 throughout the series control section
Gielow--have a pH range of 5.6 to 7.3 throughout the series control section
Gus--do not have rock fragments in the series control section
James Canyon--have rock fragment content of 15 to 35 percent in the particle-size control section
Keddie--have a pH range of 6.1 to 7.3 throughout the series control section and have a rock fragment content of up to 30 percent in the particle-size control section
Kimmerling--are stratified with a clay content of 5 to 60 percent in the lower third of the series control section
Konner--have clay films on faces of peds and in pores of the series control section
Lundlake--have a clay content of less than 18 percent and a sand content of more than 30 percent sand in the lower third of the series control section
McClave--have a moist bulk density that ranges from 1.2 to 1.4 g/cc in the lower third of the series control section
Peoh--have a pH range of 6.1 to 7.3 throughout the series control section
Romnell--have a moist bulk density range of 1.65 to 1.75 g/cc in the lower third of the series control section
Roundval--have a pH range of 6.1 to 7.3 throughout the series control section
Shandep--have a sand content of more than 70 percent in the lower third of the series control section
Wenas--have a sand content of more than 70 percent in the lower third of the series control section
GEOGRAPHIC SETTING:
Parent material--loamy sediments from till
Landform--closed depressions on moraines
Slope--0 to 1 percent
Elevation--300 to 400 meters above sea level
Mean annual temperature--6 to 10 degrees C
Mean annual precipitation--585 to 890 millimeters
Frost-free period--155 to 200 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Canisteo,
Clarion,
Harps,
Nicollet, and
Webster soils.
Canisteo--are on slightly higher landscape positions on rims of depressions, and have a mollic epipedon 25 to 60 centimeters thick
Clarion--are on higher landscape positions on convex slopes and have a frequently saturated zone between depths of 1.2 to 1.8 meters during the wettest periods of years when precipitation is within one standard deviation of the 30 year mean of annual precipitation
Harps--are on slightly higher landscape positions on rims of depressions, have a mollic epipedon 25 to 60 centimeters thick, and have a calcic horizon
Nicollet--are on higher landscape positions on flats and rises and have a frequently saturated zone at 0.4 meters during the wettest periods of years when precipitation is within one standard deviation of the 30 year mean of annual precipitation
Webster--are on slightly higher landscape positions on flats and swales and have a mollic epipedon 35 to 60 centimeters thick
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--very poorly drained--a frequently saturated zone occurs at the surface during the wettest periods of years when precipitation is within one standard deviation of the 30 year mean of annual precipitation
Saturated hydraulic conductivity--1.00 to 10.00 micrometers per second
Flooding--not flooded to rarely flooded for brief duration
Ponding--not ponded to frequently ponded (undrained) for very brief to long duration
USE AND VEGETATION:
Where drained, these areas are cultivated. The principal crops are corn and soybeans. Reed canarygrass commonly dominates partially drained pasture. The native vegetation is herbaceous marsh species tolerant of excessive wetness such as, cattails, bulrushes, giant burreed, giant reed grass and hydrophytic sedges.
DISTRIBUTION AND EXTENT:
Physiographic Division--Interior Plains
Physiographic Province--Central Lowland
Physiographic section--Western lake section
MLRA--Central Iowa and Minnesota Till Prairies (103)
LRR M; south-central Minnesota
Extent--large
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Dakota County, Minnesota, 1945.
REMARKS:
MLRA SSO 10-5 (Albert Lea, Minnesota).
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 and features recognized in this pedon are:
mollic epipedon-the zone from the surface to a depth of 99 centimeters (Ap and A horizons);
cambic horizon--the zone from a depth of 99 to 127 centimeters (Bg horizon);
cumulic subgroup-mollic epipedon is more than 60 centimeters thick;
aquic moisture regime-low chroma immediately below the A horizons.
Formerly a stratified substratum phase with silt loam, sand, sandy loam, and loamy sand textures below 102 centimeters was included with this series. However, with changes in the latest Soil Taxonomy extending the series control section to 150 centimeters, another series (Shandep) with similar properties would best fit this concept.
The type location was moved from Steele County, Minnesota to Jackson County, Minnesota in 5/09 to clearly describe the series concept within the MLRA.
Based on current investigations, elevation range in MLRA 103 is about 270 to 480 meters above sea level. However, the elevation data in the 2006 issue of USDA Handbook 296 has not been changed to agree with this elevation data.
Cation-exchange class is inferred from lab data from similar soils in the surrounding area.
Taxonomy version--Keys to Soil Taxonomy, tenth edition, 2006.
National Cooperative Soil Survey
U.S.A.