LOCATION JACOBSVILLE MIEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, active, nonacid, frigid Aeric Endoaquepts
TYPICAL PEDON: Jacobsville muck - forested. (Colors are for moist soil unless otherwise stated.)
Oa--0 to 5 inches, black (N 2/0) muck (sapric material); weak fine subangular blocky structure; very friable; many roots; strongly acid; abrupt smooth boundary. (0 to 5 inches thick)
Eg--5 to 9 inches; dark reddish gray (5YR 4/2) sandy loam; common medium prominent strong brown (7.5YR 4/6) masses of iron accumulation; weak medium subangular blocky structure; friable; few roots; about 5 percent gravel; strongly acid; clear wavy boundary. (3 to 8 inches thick)
Bw--9 to 23 inches; dark reddish brown (2.5YR 3/4) sandy loam; common prominent brown (7.5YR 4/2) and few fine prominent strong brown (7.5YR 4/6) masses of iron accumulation; weak fine and medium subangular blocky structure; friable; about 5 percent gravel; moderately acid; clear wavy boundary. (10 to 29 inches)
C--23 to 36 inches; reddish brown (2.5YR 4/4) sandy loam; many medium prominent dark reddish gray (5YR 4/2), common medium prominent pinkish gray (7.5YR 6/2), and few medium prominent strong brown (7.5YR 5/8) masses of iron accumulation; weak medium subangular blocky structure; friable; about 5 percent gravel; moderately acid; clear smooth boundary.
2R--36 inches; reddish brown (2.5YR 4/4) sandstone bedrock.
TYPE LOCATION: Houghton County Michigan; about 12 miles east of the city of Houghton; 1800 feet north and 1900 feet west of the southeast corner of sec. 36, T.55N., R. 32W.
RANGE IN CHARACTERISTICS: The solum thickness and depth to bedrock ranges from 20 to 40 inches. The volume of gravel and cobbles range from 0 to 20 percent, and volume of stones range from 0 to 5 percent throughout the pedon.
The Oa horizon has hue of 5YR, 7.5YR or is neutral, with value of 2 or 3, and chroma of 0 to 2.
The A horizon has hue of 5YR to 10YR, value of 2 or 3, and chroma of 1 or 2. It is dominantly mucky sandy loam but the
range includes mucky fine sandy loam and mucky loamy sand. Reaction is very strongly acid to slightly acid.
The Eg horizon has hue of 5YR to 10YR, value of 4 or 5, and chroma of 1 or 2. It is loam, sandy loam, loamy sand or the gravelly or cobbly analogues of these textures. Reaction is very strongly acid to slightly acid.
The Bw horizon has hue of 2.5YR or 5YR, value of 3 to 5 and chroma of 3 or 4. It is sandy loam, fine sandy loam, or the gravelly of cobbly analogues of these textures. Reaction is strongly acid to slightly acid.
The C horizon has hue of 2.5YR to 7.5YR, value of 4 to 6, and chroma of 3 or 4. It is sandy loam, fine sandy loam or loamy sand. Reaction is strongly acid to slightly acid.
Some pedons have a Cr horizon. The Cr horizon has color similar to the C horizon. Reaction ranges from strongly acid to slightly acid.
COMPETING SERIES: These are the Chazy, Gay, Minnow (T), Mino and Peasleeville series. The Gay soils lack a lithic contact within 40 inches. The Minnow soils have a lithic contact between 40 and 60 inches below the surface. The Chazy, Mino and Peasleeville soils have hues yellower than 7.5 YR in the substratum.
GEOGRAPHIC SETTING: These soils are in depressions on till plains and sandstone benches. Slope gradients range from 0 to 2 percent. These soils formed in loamy till over sandstone bedrock. Local climate is affected by Lake Superior causing high snowfall. Mean annual precipitation ranges from 30 to 36 inches, and the mean annual temperature ranges from 40 to 45 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the excessively drained Deerton soils, the moderately well drained Abbaye and Munising soils and the somewhat poorly drained Skanee and Zeba soils. The Abbaye ,Deerton and Munising soils are on adjacent uplands. Skanee and Zeba soils are on slightly higher landscape positions than the Jacobsville soils.
DRAINAGE AND PERMEABILITY: Poorly drained or very poorly drained. Permeability is moderate. Runoff is negligible to low.
USE AND VEGETATION: Forested with red maple, balsam fir, yellow birch, quaking aspen and eastern hemlock.
DISTRIBUTION AND EXTENT: Western and Central part of the Upper Peninsula of Michigan. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota.
SERIES ESTABLISHED: Houghton County, Michigan, 1989.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
albic horizon - 5 to 9 inches (Eg horizon)
cambic horizon - 9 to 23 inches (Bw horizon)
aquic soil moisture regime - prominent redoximorphic features in the zone from 5 to 9 inches.