LOCATION SEARCH             MI
Established Series
Rev. GDW-WEF
02/2006

SEARCH SERIES


The Search series consists of moderately deep, somewhat poorly drained soils formed in loamy glacial till overlying calcareous, soft shale bedrock on ground and end moraines. Permeability is moderately slow. Slope ranges from 0 to 3 percent. Mean annual precipitation is about 30 inches. Mean annual air temperature is about 43 degrees F.

TAXONOMIC CLASS: Coarse-silty, carbonatic, frigid Typic Haprendolls

TYPICAL PEDON: Search very fine sandy loam, on a 3 percent slope, in a forested area. (Colors are for moist soil unless otherwise stated.)

A--0 to 8 inches; black (10YR 2/1) very fine sandy loam, dark gray (10YR 4/1) dry; strong medium granular structure; friable; many fine to coarse roots; slightly alkaline; clear smooth boundary. (7 to 9 inches thick)

BA--8 to 10 inches; yellowish brown (10YR 5/4) (B) (70 percent) and very dark grayish brown (10YR 3/2) (A) very fine sandy loam; moderate medium subangular blocky structure; friable; many medium and fine roots; about 10 percent gravel; few fine distinct dark grayish brown (10YR 4/2) iron depletions throughout; strongly effervescent; moderately alkaline; clear smooth boundary. (2 to 5 inches thick)

C1--10 to 15 inches; light yellowish brown (10YR 6/4) gravelly very fine sandy loam; massive; firm; about 10 percent soft shale fragments that are easily crushed; about 15 percent gravel; few fine roots; strongly effervescent; moderately alkaline; clear wavy boundary.

C2--15 to 24 inches; light brown (7.5YR 6/4) very gravelly very fine sandy loam; massive; firm; about 10 percent soft shale fragments that are easily crushed; about 35 percent gravel; strongly effervescent; moderately alkaline; clear smooth boundary. (Combined thickness of the C horizon is 5 to 22 inches.)

2Cr--24 to 60 inches; layered weak red (10R 5/2), weak red (10R 4/3) and pale olive (5Y 6/4) calcareous, soft shale bedrock.

TYPE LOCATION: Mackinac County, Michigan; about 10 miles north of St. Ignace; located about 2,100 feet east and 1,300 feet south of the northwest corner of section 29, T. 42 N., R. 3 W.; USGS Charles topographic quadrangle; lat. 46 degrees 00 minutes 36 seconds N. and long. 84 degrees 42 minutes 29 seconds W., NAD 83.

RANGE IN CHARACTERISTICS: Depth to paralithic contact typically ranges from 20 to 30 inches, but can be as deep as 40 inches in some areas. Solum thickness ranges from 9 to 13 inches. Gravel content ranges from 0 to 10 percent in the surface horizons and from 10 to 35 percent in the subsoil and substratum. Soft shale channers range from 0 to 15 percent throughout the profile. The channers will slake down in overnight shaking in calgon solution. Calcium carbonate equivalent ranges from 40 to 70 percent.

The A horizon has hue of 10YR or is neutral, value of 2 or 3, chroma of 0 to 2. It is very fine sandy loam, silt loam or loam. Reaction is slightly or moderately alkaline.

The B part of the B/A horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 to 6. The A part of the B/A horizon has colors similar to the A horizon. Textures of the B/A horizon are the same as for the A horizon. Reaction is slightly or moderately alkaline.

The C horizon has hue of 10YR or 7.5YR, value of 5 or 6, and chroma of 3 or 4. They are the very gravelly analogs of very fine sandy loam or silt loam. Thin subhorizons, less than 6 inches thick, of gravelly very fine sandy loam or gravelly silt loam are allowed. It is moderately alkaline.

COMPETING SERIES: There are no competing series. Related are the Shelter soils which are not underlain by soft shale within 40 inches and have cambic horizons.

GEOGRAPHIC SETTING: Search soils are on nearly level ground moraines and end moraines. Slope ranges from 0 to 3 percent. The mean annual precipitation ranges from 28 to 32 inches. The mean annual air temperature ranges from 41 to 43 degrees F. Frost-free period is 120 to 140 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Angelica and Satago soils. Angelica soils are poorly drained and are on lower landscape positions. The Satago soils are well drained and are on higher landscape positions.

DRAINAGE AND PERMEABILITY: Somewhat poorly drained. The depth to the apparent seasonal high water table ranges from .5 foot to 1 foot below the surface at some times during the period from November to May. Runoff is slow. Permeability is moderately slow.

USE AND VEGETATION: This soil is used as woodland. Quaking aspen, balsam fir, northern white cedar, red maple, sugar maple, and paper birch are the principle tree species.

DISTRIBUTION AND EXTENT: The eastern end of the Upper Peninsula of Michigan. The series is of minor extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota

SERIES ESTABLISHED: Mackinac County, Michigan. 1994.

REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from the surface to 8 inches (A horizon).

This soil was formerly carried as Satago Variant on the East Part of the Hiawatha National Forest soil survey.

ADDITIONAL DATA: Soil Interpretation Record No.: MI0614.


National Cooperative Soil Survey
U.S.A.