LOCATION OKEEFE MIEstablished Series
TAXONOMIC CLASS: Sandy over loamy, isotic, frigid Typic Haplorthods
TYPICAL PEDON: Okeefe sand on a 5 percent slope in a forested area at an elevation of 740 feet. (Colors are for moist soils unless otherwise stated.)
Oe--0 to 2 inches; black (7.5YR 2.5/1) partially decomposed leaf litter; many fine to coarse roots; extremely acid; abrupt smooth boundary.
E--2 to 6 inches; brown (7.5YR 5/2) sand, pinkish gray (7.5YR 7/2) dry; moderate medium subangular blocky structure; very friable; common fine to coarse roots; extremely acid; abrupt irregular boundary. (2 to 7 inches thick)
Bhs--6 to 7 inches; dark brown (7.5YR 3/2) sand; moderate medium subangular blocky structure; very friable; many fine to coarse roots; extremely acid; clear irregular boundary. (1 to 3 inches thick)
Bs1--7 to 14 inches; brown (7.5YR 4/4) sand; weak medium subangular blocky structure; very friable; few medium and coarse roots; very strongly acid; clear irregular boundary. (5 to 10 inches thick)
Bs2--14 to 19 inches; strong brown (7.5YR 4/6) sand; weak medium subangular blocky structure; very friable; few medium and coarse roots; very strongly acid; clear irregular boundary. (0 to 8 inches thick)
BC--19 to 31 inches; yellowish brown (10YR 5/4) fine sand; weak medium subangular blocky structure; friable; few medium roots; 1 percent gravel; strongly acid; clear wavy boundary. (10 to 15 inches thick)
2C--31 to 80 inches; stratified brown (7.5YR 5/3) silt loam and brown (10YR 5/3) and pale brown (10YR 6/3) silt; moderate medium platy structure inherent from deposition; friable; very strongly acid.
TYPE LOCATION: Luce County, Michigan; 1450 feet west and 1200 feet south of the northeast corner of sec. 31, T.49N., R.9W.
RANGE IN CHARACTERISTICS: The depth to the loamy substratum ranges from 26 to 35 inches. Gravel content ranges from 0 to 5 percent in the solum. The reaction of the solum is extremely acid to strongly acid and the substratum is very strongly acid to strongly acid.
The E horizon has value of 5 or 6, and chroma of 2.
The Bhs horizon has a hue of 7.5YR or 5YR, value of 2.5 or 3, and chroma of 2 or 3.
The Bs1 horizon has value of 3 or 4.
The Bs2 horizon has value of 4 or 5, and chroma of 4 to 6.
The BC horizon has value of 5 or 6. It is sand or fine sand.
The 2C horizon has a hue of 7.5YR or 10YR, value of 5 or 6, and chroma of 3 or 4. It is stratified silt loam, silt, very fine sand, loamy very fine sand, or very fine sandy loam.
COMPETING SERIES: There are no competing series. The closely related Ocqueoc series has mixed mineralogy and lacks a continuous spodic horizon with value and chroma of 3 or less.
GEOGRAPHIC SETTING: Okeefe soils formed in sandy outwash and stratified lacustrine sediments. Slopes range from 0 to 35 percent. Mean annual precipitation ranges from 28 to 36 inches. Mean annual temperature ranges from 41 to 43 degrees F. and elevations range from 700 to 950 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kalkaska, Rubicon, Wallace, and Ingalls soils. The excessively drained Rubicon, somewhat excessively drained Kalkaska, and well drained Wallace soils are on similar landscape positions. The somewhat poorly drained Ingalls soils are on lower landscape positions.
DRAINAGE AND PERMEABILITY: Well drained. Surface runoff is negligible to low, dependent on slope. Permeability is rapid in the sandy portion and moderate in the loamy substratum.
USE AND VEGETATION: Most areas of this soil are forested. Common tree species are sugar maple, american beech, red maple, quaking aspen, eastern white pine, and eastern hemlock.
DISTRIBUTION AND EXTENT: Eastern Upper Peninsula of Michigan. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota.
SERIES ESTABLISHED: Luce County, Michigan; 2005. The source of the name is a creek in Luce County.
REMARKS: Diagnostic horizons and features recognized in the pedon are: Albic horizon- the zone from 2 to 6 inches (E horizon); Spodic horizon- the zone from 6 to 19 inches (Bhs, Bs1 and Bs2 horizons).
ADDITIONAL DATA: Refer to S097MI-095-022 for NSSL data on the typical pedon.