LOCATION BEARTREE           WI
Established Series
Rev. SAH-TAM-TWN
08/2009

BEARTREE SERIES


The Beartree series consists of shallow, very poorly drained soils that formed in 25 to 50 centimeters of loamy alluvium over mudstone bedrock. These soils are in depressions on strath terraces or on floodplains. Slope ranges from 0 to 2 percent. Mean annual precipitation is about 750 millimeters. Mean annual air temperature is about 5 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Lithic Endoaquolls

TYPICAL PEDON: Beartree channery silt loam, on a slope of 1 percent, in a forest, at an elevation of about 287 meters above sea level. (Colors are for moist soil unless otherwise noted.)

Oa--0 to 2 centimeters; reddish black (2.5YR 2.5/1), dark reddish gray (2.5YR 3/1) dry, muck; weak fine subangular blocky structure; very friable; many very fine and fine roots; neutral; abrupt wavy boundary. (0 to 18 centimeters thick)

A1--2 to 10 centimeters; reddish black (2.5YR 2.5/1) channery silt loam, dark reddish gray (2.5YR 4/1) dry; weak fine subangular blocky structure; friable; common very fine and fine roots; about 20 percent channers and 5 percent flagstones; neutral; clear wavy boundary

A2--10 to 41 centimeters; dark reddish gray (2.5YR 3/1) extremely channery silt loam, weak red (2.5YR 4/2) dry; weak fine subangular blocky structure; friable: few very fine roots; about 60 percent channers and 15 percent flagstones; few prominent red (10R 4/6) masses of iron accumulation; neutral; abrupt wavy boundary.

2R--41 centimeters; reddish brown (2.5YR 4/3) thinly bedded mudstone.

TYPE LOCATION: Major Land Resource Area (MLRA) 91B-Wisconsin and Minnesota Sandy Outwash, Burnett County, Wisconsin subset; located about 650 feet south and 3220 feet east of the northwest corner of section 4, T. 42 N., R. 14 W.; USGS Scovils Lake topographic quadrangle; lat. 46 degrees 09 minutes 19 seconds N. and long. 92 degrees 07 minutes 15 seconds W., NAD 83.

RANGE IN CHARACTERISTICS:
Depth to bedrock--25 to 50 centimeters
Clay content of the particle-size control section (weighted average)--6 to 18 percent
Sand content of the particle-size control section (weighted average)--greater than 15 percent

Oa horizon:
Hue--2.5YR
Value--2.5
Chroma--1
Texture--muck
Clay content--0 percent
Sand content--0 to 10 percent
Reaction--pH 5.6 to 7.3
Thickness--0 to 18 centimeters

A horizon:
Hue--2.5YR or 5YR
Value--2 to 3
Chroma--1 or 2
Texture--channery, very channery, or extremely channery analogs of loam or silt loam
Clay content--10 to 25 percent
Sand content--15 to 40 percent
Rock fragment content--35 to 85 percent; 25 to 50 percent, channers; 10 to 35 percent flagstones
Reaction--pH 5.6 to 7.3
Thickness--25 to 50 centimeters

B or Bg horizon (when present):
Hue--2.5YR to 10YR
Value--4 to 6
Chroma--2 or 3
Texture--very channery to extremely channery analogs of silt loam, loam, very fine sandy loam, or fine sandy loam
Clay content--10 to 25 percent
Sand content--15 to 40 percent
Rock fragment content--35 to 85 percent; 25 to 50 percent, channers; 10 to 35 percent flagstones
Reaction--pH 5.6 to 7.3
Thickness--0 to 25 centimeters

2R horizon:
Texture--mudstone bedrock

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING:
Parent material--25 to 50 centimeters of loamy alluvium over mudstone bedrock
Landform--depressions on strath terraces or floodplains
Slope--0 to 2 percent
Elevation--245 to 455 meters above sea level
Mean annual air temperature--3 to 8 degrees C
Mean annual precipitation--635 to 865 millimeters
Frost-free period--90 to 180 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Clemens, Drylanding, and Makwa soils.
Clemens--are on higher landscape positions and have a frequently saturated zone between depths of 0.3 to 0.75 meter during the wettest periods of years when precipitation is within one standard deviation of 30 year mean of annual precipitation
Drylanding--are on higher landscape positions on convex slopes and do not have a frequently saturated zone within a depth of 1.8 meters during the wettest periods of years when precipitation is within one standard deviation of 30 year mean of annual precipitation
Makwa--are on landscape positions similar to those of the Beartree soils and do not have a lithic contact within a depth of 150 centimeters

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--very poorly drained--these soils are frequently saturated from the surface of the soil to a depth of 0.3 meter during the wettest periods of years when precipitation is within one standard deviation of 30 year mean of annual precipitation
Saturated hydraulic conductivity--4.00 to 14.00 micrometers per second
Flooding--occasionally flooded for brief duration
Ponding--frequently ponded to a depth of 0.3 meter for long duration during the wettest periods of years when precipitation is within one standard deviation of 30 year mean of annual precipitation

USE AND VEGETATION:
Most areas are forested. The native vegetation is mixed deciduous and coniferous forest.

DISTRIBUTION AND EXTENT:
Physiographic division--Interior Plains
Physiographic Province--Central Lowland
Physiographic section--Western Lake section
MLRA--Wisconsin and Minnesota Sandy Outwash (91B)
LRR K; northwestern Wisconsin
Extent--small

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota; MLRA SSO 10-4 (Duluth, Minnesota).

SERIES ESTABLISHED: Burnett County, Wisconsin, 2004.

REMARKS:
Particle-size control section--the zone from a depth of 25 to 41 centimeters; series control section--the zone from the surface of the soil to a depth of 41 centimeters.

Diagnostic horizons and features recognized in the pedon are:
mollic epipedon--the zone from a depth of 2 to 41 centimeters (A1 and A2 horizons);
lithic contact--contact with mudstone at a depth of 41 centimeters (2R horizon);
aquic 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.


National Cooperative Soil Survey
U.S.A.