LOCATION GOWAN MNEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, frigid Typic Argiaquolls
TYPICAL PEDON: Gowan silt loam on flat of 1 percent, in a cultivated field, on a glacial lake plain, at an elevation of about 400 meters. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 28 centimeters; very dark gray (10YR 3/1) silt loam, gray (10YR 5/1) dry; weak fine and moderate granular structure; very friable; common fine and very fine roots; moderately acid; clear smooth boundary. (20 to 33 centimeters thick)
Btg--28 to 46 centimeters; olive gray (5Y 5/2) silty clay loam; weak very fine angular blocky structure; firm; common fine and very fine roots; few faint grayish brown (2.5Y 5/2) clay films on faces of peds; common fine prominent olive brown (2.5Y 4/4) and few fine prominent olive (5Y 5/6) redoximorphic concentrations; neutral; gradual wavy boundary. (13 to 51 centimeters thick)
Bg--46 to 64 centimeters; olive (5Y 5/3) silt loam; moderate medium subangular blocky structure; friable; few fine and very fine roots; common medium distinct light olive brown (2.5Y 5/6) redoximorphic concentrations; common medium faint grayish brown (2.5Y 5/2) redoximorphic depletions; strongly effervescent; moderately alkaline; abrupt wavy boundary. (13 to 51 centimeters thick)
2C--64 to 203 centimeters; light gray (2.5Y 7/2) loamy very fine sand; single grain; friable; few fine faint light gray (10YR 7/1) nodules of calcium carbonate; common fine distinct pale olive (5Y 6/4) Fe depletions, and common fine and medium prominent yellow (10YR 7/8) Fe concentrations; violently effervescent; moderately alkaline.
TYPE LOCATION: Major Land Resource Area (MLRA) 88-Northern Minnesota Glacial Lake Basins; St. Louis County, Minnesota, Meadowlands subset; about 1 mile north and 2.5 miles east of Floodwood; located about 2,000 feet south and 1,300 feet west of the northeast corner of section 27, T. 52 N., R. 20 W.; USGS McCarty River topographic quadrangle; latitude 46 degrees 57 minutes 51 seconds N., and longitude 92 degrees 51 minutes 3 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness--20 to 33 centimeters
Depth to free carbonates--38 to 102 centimeters
Depth to sandy sediments--51 to 102 centimeters
Rock fragment content--0 to 1 percent
Ap or A horizon:
Hue--10YR
Value--2 to 4
Chroma--1 or 2
Texture--silt loam, loam, very fine sandy loam or silty clay loam
Reaction--moderately acid to neutral
Btg or Bt horizon:
Hue--10YR to 5Y
Value--4 to 6
Chroma--1 or 2
Texture--silty clay loam or silt loam. The clay content ranges from 18 to 35 percent
Reaction--slightly acid to neutral
Bw or Bg horizon:
Hue--2.5Y or 5Y
Value--5 or 6
Chroma--1 to 3
Texture--silt loam, very fine sandy loam, or silty clay loam; or stratified with these textures
Reaction--slightly alkaline to moderately alkaline
2C or 2Cg horizon:
Hue--2.5Y or 5Y
Value--5 to 7
Chroma--2 to 6
Texture--loamy very fine sand, very fine sand, fine sand, sand, or loamy fine sand; or stratified with these textures
Reaction--slightly alkaline to moderately alkaline
COMPETING SERIES: This is the
Jimcreek series.
Jimcreek--do not have carbonates within the series control section
GEOGRAPHIC SETTING:
Parent material--loamy glaciolacustine deposits and the underlying sandy glaciolacustrine deposits on flats on glacial lake plains
Slope--0 to 2 percent
Mean annual air temperature--3 to 5 degrees C
Mean annual precipitation--635 to 711 millimeters
Frost free period--95 to 125 days
Elevation--350 to 490 meters above sea level
GEOGRAPHICALLY ASSOCIATED SOILS: This is the
Lahti soils. Lahti soils forms a hydrosequence with the Gowan soils.
Lahti--are on slightly higher landscape positions on the landscape and have a seasonal high zone of saturation as high as 46 centimeters during the wettest periods of normal years
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--poorly drained--a seasonal high zone of saturation as shallow as 15 centimeters below the surface during the wettest periods of normal years
Saturated hydraulic conductivity--1.00 to 10.00 micrometers per second in the upper loamy glaciolacustrine deposits and 1.00 to 100.00 micrometers per second in the underlying sandy or loamy glaciolacustrine deposits
USE AND VEGETATION: Most areas are cropped for hay.
DISTRIBUTION AND EXTENT:
Physiographic Division--Interior Plains or Laurentian Upland
Physiographic Province--Central Lowland Province or Superior Upland
Physiographic section--Western Lake section (if in the Central Lowland Province) or undefined (if in the Superior Upland)
MLRA--Northern Minnesota Glacial Lake Basins (88)
LRR K; northern Minnesota
Extent--small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: St. Louis County, Minnesota, 2009. The source of the name is a small village in St. Louis County.
REMARKS:
Particle-size control section--the zone from a depth of 28 to 46 centimeters;
series control section--the zone from surface of the soil to a depth of 150 centimeters.
Diagnostic horizons and features recognized in this pedon include:
mollic epipedon--the zone from 0 to 28 centimeters (Ap horizon);
argillic horizon-the zone from 28 to 46 centimeters (Btg horizon);
aquic moisture regime.
Taxonomy version--Keys to Soil Taxonomy, tenth edition, 2006