LOCATION CASHNER OREstablished Series
TAXONOMIC CLASS: Coarse-loamy, siliceous, superactive, isomesic, ortstein Typic Duraquods
TYPICAL PEDON: Cashner loam - woodland, on a 4 percent planar slope at an elevation of 730 feet. (When described on October 3, 1991 the soil was dry to a depth of 12 inches and moist below this depth. Colors are for moist soil unless otherwise noted.)
Oi--1 inch to 0; partially decomposed needles, leaves, twigs and woody materials.
E1--0 to 8 inches; very dark gray (10YR 3/1) loam, gray (10YR 5/1) dry; moderate fine subangular blocky structure; hard, friable, nonsticky and nonplastic; many very fine, fine, and medium, and common coarse roots; many very fine and fine tubular pores; extremely acid (pH 4.2); abrupt smooth boundary.
E2--8 to 12 inches; dark gray (10YR 4/1) loam, light gray (10YR 7/1) dry; moderate medium angular blocky structure; hard, friable, nonsticky and nonplastic; common very fine, fine, and medium, and few coarse roots; many fine and very fine tubular pores; extremely acid (pH 4.4); abrupt smooth boundary. (Combined thickness of the E horizon is 11 to 18 inches)
Bhs--12 to 21 inches; black (10YR 2/1) fine sandy loam, brown (7.5YR 5/2) dry; moderate medium subangular blocky structure; hard, friable, slightly sticky and slightly plastic; many fine, and common medium roots; many fine and very fine tubular pores; common medium distinct dark brown (7.5YR 4/4)masses of iron accumulation and gray (10YR 5/1) iron depletions; 10 percent (2 to 10 mm) ortstein fragments; very strongly acid (pH 4.6); abrupt wavy boundary. (9 to 12 inches thick)
2Bsm1--21 to 31 inches; variegated dark brown (7.5YR 4/4) and reddish brown (5YR 4/4) strongly cemented (5 to 15 mm) rinds of sandy material with pockets of brownish yellow (10YR 6/6) sandy clay loam, strong brown (7.5YR 5/6) and yellowish red (5YR 5/6) dry; massive; very hard, very firm, slightly sticky and slightly plastic; few fine roots along fractures and on top of the cemented bands; many fine and very fine tubular pores; common medium prominent pale brown (10YR 6/3) masses of iron accumulation; very strongly acid (pH 4.6); abrupt smooth boundary.
2Bsm2--31 to 44 inches; variegated strong brown (7.5YR 4/6) and reddish brown (5YR 4/4) strongly cemented (2 to 5 mm) rinds of sandy material with pockets of sandy clay loam, reddish yellow (7.5YR 6/6) dry; massive; very hard, very firm, slightly sticky and slightly plastic; common fine tubular pores; very strongly acid (pH 4.6); abrupt smooth boundary. (Combined thickness of the Bsm horizon is 20 to 40 inches)
2C--44 to 60 inches; variegated strong brown (7.5YR 4/6) and brown (7.5YR 4/4) sandy loam, reddish yellow (7.5YR 6/6) dry; massive; soft, friable, nonsticky and nonplastic; few fine irregular pores; very strongly acid (pH 4.6).
TYPE LOCATION: Curry County, Oregon; located about 500 feet south and 1,200 feet east of the northwest corner of section 25, T. 32 S., R. 15 W. W.M. (Latitude 42 degrees, 46 minutes, 47 seconds N.; Longitude 124 degrees, 25 minutes, 47 seconds W.)
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 51 to 54 degrees F. The difference between mean summer and mean winter soil temperature varies from 5 to 9 degrees F. The soils are usually moist but are dry for less than 45 consecutive days in all parts between depths of 4 and 12 inches in the four months following the summer solstice. The particle-size control section has 5 to 15 percent clay and 15 percent or more (by weight) of the particles are fine sand or coarser. Depth to the ortstein layer is 20 to 30 inches. Soil reaction is extremely acid or very strongly acid throughout.
The E horizon has value of 3 to 5 moist, 5 to 7 dry and chroma of 1 or 2 moist and dry. It is loam with 10 to 20 percent clay. It has 0 to 10 percent gravel.
The Bhs horizon has hue of 10YR or 7.5YR, value of 2 moist, 4 or 5 dry and chroma of 1 or 2 moist and dry. Few to common, distinct or prominent redox concentrations and redox depletions occur throughout this horizon. It is loam, very fine sandy loam, or fine sandy loam with 5 to 15 percent clay. It has 0 to 10 percent ortstein fragments. Typically, this horizon has an accumulation of organic matter and a high content of fibrous roots.
The 2Bsm horizon has hue of 10YR or 7.5YR in the soft matrix pockets, and 5YR or 7.5YR in the ortstein layer, value of 4 or 5 moist, 5 or 6 dry and chroma of 4 to 6 moist and dry. Few to common, distinct or prominent redox concentrations occur in the upper part of this horizon. It is strongly cemented. Textures are sandy clay loam, loam or sandy loam with 15 to 25 percent clay. It has 0 to 30 percent reddish brown (2 to 5 mm) iron cemented nodules.
The 2C horizon has hue of 10YR or 7.5YR, value of 4 to 7 moist, 6 to 8 dry and chroma of 4 to 8 moist and dry. It is variegated, stratified loamy fine sand, loamy sand, or sandy loam with 0 to 10 percent clay and thin, intermittent lenses weakly cemented by iron and/or aluminum occurring to a depth of 10 feet or more.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Cashner soils occur in nearly level to depressional or concave areas and narrow drainageways on broad tops of deeply dissected high marine terraces. Slopes are 0 to 7 percent. The soils formed in medium textured eolian material overlying stratified marine sediments. Elevations are 400 to 1,500 feet. The climate is humid, characterized by cool, wet winters and cool, moist summers with fog. A strong marine influence limits the diurnal and annual range of temperature. The mean annual precipitation is 70 to 90 inches. The mean annual temperature is about 50 to 53 degrees F. The frost-free period is 210 to 300 days. Cashner soils occur on the Griggs geomorphic surface.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Burnthill, Cunniff, and Joeney soils. Burnthill soils are on high marine terraces, are fine-loamy and have an argillic horizon. Cunniff soils are on an adjacent lower marine terrace, have an umbric epipedon 10 to 20 inches thick and 35 to 45 percent clay in the argillic horizon. Joeney soils are on an adjacent lower marine terrace, 10 to 20 inches deep to a cemented ortstein layer, and are poorly drained.
DRAINAGE AND PERMEABILITY: Poorly drained; moderate permeability in the upper part of the solum, very slow in the ortstein layer, and rapid in the underlying material. A perched high water table fluctuates between depths of 0.5 to 1.5 feet from November through April.
USE AND VEGETATION: Cashner soils are used for pasture, watershed, limited homesite development, and wildlife habitat. Native vegetation is Sitka spruce, Douglas fir, Port-Orford cedar, tanoak, evergreen huckleberry, cascara buckthorn, western azalea, salal, deer fern, sedge, and rush.
DISTRIBUTION AND EXTENT: Pleistocene marine terraces in southwestern Oregon; MLRA 1. The series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Curry County, Oregon, 1995. The source of the name is from Cashner Butte in southwestern Curry County.
REMARKS: Diagnostic horizons and features recognized in this pedon include:
Albic horizon - from the surface to a depth of 12 inches (E1, E2 horizons).
Spodic horizon - from a depth of 12 to 44 inches (Bhs, Bsm1, Bsm2 horizons).
Ortstein feature - from a depth of 21 to 44 inches (Bsm1, Bsm2 horizons).
Aquic conditions - redoximorphic features beginning in the zone from 12 to 21 inches (Bhs horizon)
Particle-size control section - from 10 to 21 inches (part of the E2 horizon, Bhs horizon) with a weighted average of 7 percent clay.
ADDITIONAL DATA: Reference sample with partial data from pedon 91P327, samples 91P1956-1962, Curry County, Oregon, sampled by NSSL, Lincoln, NE, 4/92.