LOCATION MCIVOR MIEstablished Series
TAXONOMIC CLASS: Sandy, mixed, frigid, shallow, ortstein Typic Duraquods
TYPICAL PEDON: McIvor Sand - on a 1 percent slope in a woodland. (Colors are for moist soil unless otherwise stated.)
Oi--2 to 0 inches; slightly decomposed hardwood leaf litter.
A--0 to 2 inches; dark gray (10YR 4/1) sand, gray (10YR 5/1) dry; weak fine granular structure; very friable; many fine to coarse roots; very strongly acid; abrupt smooth boundary. (0 to 2 inches thick)
E1--2 to 8 inches; pinkish gray (7.5YR 7/2) sand, pinkish gray (7.5YR 7/2) dry; weak moderate subangular blocky structure; very friable; many fine to coarse roots; very strongly acid; clear wavy boundary.
E2--8 to 11 inches; pinkish gray (7.5YR 7/2) sand, pinkish gray (7.5YR 7/2) dry; weak moderate subangular blocky structure; very friable; many fine to coarse roots; few fine and medium distinct light brownish gray (10YR 6/2) iron depletions throughout; very strongly acid; clear wavy boundary.
E3--11 to 18 inches; very pale brown (10YR 8/2) sand, very pale brown (10YR 8/2) dry; weak moderate subangular blocky structure; very friable; few fine to coarse roots; many medium and coarse prominent light yellowish brown (10YR 6/4) iron accumulations throughout; strongly acid; clear smooth boundary. (Total thickness of the E horizon is 8 to 18 inches)
Bhsm--18 to 24 inches; 60 percent dark reddish brown (5YR 3/3) and 40 percent yellowish brown (10YR 5/6) sand; massive; very hard; ortstein occupies 90 percent of horizon and is strongly cemented; few fine prominent light brownish gray (10YR 6/2) and many medium and coarse prominent grayish brown (10YR 5/2) iron depletions throughout; strongly acid; clear smooth boundary. (6 to 16 inches thick)
BC--24 to 29 inches; dark yellowish brown (10YR 4/4) sand; single grain; loose; many medium and coarse distinct brownish yellow (10YR 6/6) iron accumulations throughout; strongly acid; clear smooth boundary. (4 to 20 inches thick)
C--29 to 56 inches; pale brown (10YR 6/3) sand; single grain; loose; strongly acid; abrupt smooth boundary. (0 to 30 inches thick)
2C--56 to 80 inches; reddish brown (5YR 5/4) silty clay; massive; firm; strongly effervescent; slightly alkaline. (24 to 38 inches thick)
TYPE LOCATION: Iosco County, Michigan; about 7 miles southwest of Tawas City; 2,130 feet south and 520 feet east of the northwest corner, section 18, T. 21 N., R. 7 E.
RANGE IN CHARACTERISTICS: The thickness of the sandy material is 52 to 60 inches and corresponds to the depth of carbonates.
The A horizon has hue of 10YR or is neutral, value of 2 to 4, and chroma of 0 to 1. Reaction is very strongly acid.
The E horizon has hue of 10YR or 7.5YR, value of 5 to 8, and chroma of 1 to 3. Reaction is very strongly acid or strongly acid.
The Bhsm or Bsm horizon has a hue of 10YR to 2.5YR, value of 2 to 5, and chroma of 2 to 6. Greater than 90 percent of the horizon is cemented. Cementation ranges from weak to strong. Reaction of the Bhsm or Bsm horizon is strongly acid. Some pedons have Bs horizons with a hue of 7.5YR, value of 5, and chroma of 6. Greater than 50 percent of the Bs horizon is cemented.
The BC horizon has a hue of 10YR, value of 4 or 5, and chroma of 3 to 8. Reaction is strongly acid.
The C horizon has a hue of 10YR or 2.5Y, value of 5 or 6, and chroma of 3 or 4. Reaction is strongly acid.
Some pedons have an Ab horizon above the 2C. The 2C horizon has a hue of 7.5YR or 5YR, value of 5 and chroma of 4. It is silty clay and averages from 40 to 60 percent clay. Reaction is slightly alkaline.
COMPETING SERIES: This is the Finch and Spot series in the same family. Finch and Spot soils do not have silty clay or clay loam materials within 60 inches.
GEOGRAPHIC SETTING: Mcivor soils formed in sandy lacustrine deposits overlying clayey lacustrine sediments on lake plains. Slope gradients range from 0 to 3 percent. Mean annual precipitation ranges from 28 to 32 inches and the mean annual air temperature ranges from 43 to 45 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Proper, Pullup, Wabun and Kanotin (P). The moderately well drained Proper ad somewhat excessively drained Pullup soils are on higher landform positions. The poorly drained Wabun and Kanotin are in lower landscape positions.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. These soils have an apparent seasonal high water that ranges from .5 to 1.5 feet below the surface at times during the period from November to May. Runoff is very slow. Permeability is moderate or moderately rapid in the ortstein material, very slow in the silty clay substratum, and rapid throughout the remainder of the pedon.
USE AND VEGETATION: This soil is predominantly wooded, with red maple, paper birch, quaking aspen, red pine and jack pine being the principal species.
DISTRIBUTION AND EXTENT: Northeastern lower peninsula of Michigan. The series is of minor extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Iosco County, Michigan, 1994. Source of the name is a former village (now cross road) in southern Iosco County.
REMARKS: Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from 0 to 8 inches (A and E1 horizon); albic horizon - the zone from 2 to 18 inches (E1, E2 and E3 horizons); spodic horizon - the zone from 18 to 24 inches (Bhsm horizon); aquic soil moisture regime - redoximorphic features within the E1, E2 and E3 horizons).
ADDITIONAL DATA: Soil Interpretation Record No.: MI0119.