LOCATION KINNEY OR+WAEstablished Series
TAXONOMIC CLASS: Fine-loamy, isotic, mesic Andic Dystrudepts
TYPICAL PEDON: Kinney cobbly loam, forested. (Colors are for moist soil unless otherwise noted.)
Oi1--2 inches to 1 inch; partially decomposed fern, fir needles, leaves, twigs, etc.
Oi2--1 inch to 0; well decomposed black friable organic matter.
A1--0 to 4 inches; very dark brown (10YR 2/2) cobbly loam, dark brown (10YR 4/3) dry; moderate fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many fine and medium roots; many very fine irregular pores; many medium and fine shot; 25 percent gravel and angular cobbles strongly acid (pH 5.3); clear smooth boundary. (4 to 7 inches thick)
A2--4 to 10 inches; very dark brown (10YR 2/2) cobbly loam, dark brown (10YR 4/3) dry; moderate medium and fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many fine and very fine roots; many very fine irregular pores; many medium and fine shot; 25 percent gravel and angular cobbles; strongly acid (pH 5.1); abrupt wavy boundary. (0 to 6 inches thick)
BA--10 to 15 inches; dark brown (10YR 3/3) cobbly clay loam, dark brown (10YR 4/3) dry; few thin darker colored coatings on surfaces of peds; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many medium to very fine roots; many very fine tubular pores; many medium and fine shot; 30 percent angular cobbles and gravel; strongly acid (pH 5.3); clear wavy boundary. (0 to 8 inches thick)
Bw1--15 to 20 inches; dark brown (7.5YR 3/4) cobbly clay loam, brown (7.5YR 5/4) dry; thin continuous slightly darker colored coatings on peds; weak medium subangular blocky structure; slightly hard, friable, sticky and plastic; common roots; many very fine tubular pores; many coarse sand-size particles of quartz-like material; 30 percent gravel and cobbles; strongly acid (pH 5.3); gradual smooth boundary. (9 to 12 inches thick)
Bw2--20 to 40 inches; dark yellowish brown (10YR 4/4) cobbly clay loam, yellowish brown (10YR 5/4) dry; weak coarse and medium subangular blocky structure; slightly sticky and slightly plastic; common roots; many very fine tubular pores; common coarse sand-size particles of quartz-like material; 35 percent gravel and angular cobbles; very strongly acid (pH 5.0); clear wavy boundary. (10 to 35 inches thick)
C--40 to 53 inches; dark yellowish brown (10YR 4/4) cobbly loam, pale brown (10YR 6/4) dry; massive; slightly hard, friable, slightly sticky and slightly plastic; few roots; many very fine pores; many coarse sand-size particles of quartz-like material; 35 percent gravel and angular cobbles; very strongly acid (pH 4.8); abrupt irregular boundary. (0 to 13 inches thick)
2Cr--53 to 57 inches; variegated light olive brown (2.5YR 5/4), pale yellow (2.5Y 7/4), yellow (2.5Y 7/6) and dark red (2.5YR 3/6) partially weathered basic igneous agglomerate; very strongly acid (pH 4.8); many feet thick.
TYPE LOCATION: Marion County, Oregon; about 3 miles southeast of South Burn Guard Station; 60 feet north of South Burn Road in NW1/4 NE1/4 SW1/4 section 31, T. 8 S., R. 2 E.
RANGE IN CHARACTERISTICS: The soils are usually moist and are dry between depths of 4 and 12 inches for less than 45 consecutive days during the 4-month period following the summer solstice. The mean annual soil temperature ranges from 47 to 52 degrees F. Depth to a paralithic contact ranges from 40 to 60 inches or more. The 10 to 40-inch control section averages 5 to 35 percent rock fragments and 22 to 35 percent clay. It has more than 15 percent coarser than very fine sand. The umbric epipedon is 10 to 20 inches thick.
The A horizon has hue of 7.5YR or 10YR, value of 2 or 3 moist, 3 to 5 dry, and chroma of 2 to 4 dry and moist. It has moderate or strong granular or very fine subangular blocky structure. This horizon is slightly acid to strongly acid. It has an assumed bulk density of 0.85 to 0.95 g/cubic centimeter.
The B horizon has hue of 10YR. 7.5YR or 5YR value of 3 to 6 moist, 4 through 6 dry, and chroma of 3 to 6 moist and dry. It is clay loam or loam. It has weak or moderate very fine to medium subangular blocky structure. It is strongly acid or very strongly acid.
COMPETING SERIES: There are no competing series. The following series which are classified as medial are similar: Arta, Astoria, Boistfort, Bunker, Copalis, Elochman, Formader, Hoquiam, Ilwaco, Jimbo, Knappton, LeBam, Lytell, Makah, Mopang, Narel, Newskah, Oyhut, Palix, Papac, Silcox, Skamo, Vesta, Walville, Willapa, Zenker and Zyzyl. Arta, Willapa and Skamo soils have mottles with chroma of 2 or less in the control section. Astoria, Boistfort and LeBam soils have more than 35 percent clay in the control section. Bunker, Hoquiam and Knappton soils have coarse fragments dominantly of pebble-size. Copalis, Oyhut and Papac soils are moderately deep. Elochman, Ilwaco and Vesta soils have less than 15 percent coarse fragments. Jimbo, Newskah and Silcox soils are less than 20 percent clay in the control section. Lytell, Walville, Zenker and Zyzyl soils contain only soft rock fragments. Makah, Mopang, Narel, Newskah and Palix soils have more than 4 percent organic carbon in the upper third of the control section. Formader soils are 20 to 40 inches deep to bedrock.
GEOGRAPHIC SETTING: The Kinney soils are on uplands at elevations of 600 to 3,800 feet. Slopes are 2 to 75 percent. The soils formed in colluvium and residuum weathered from coarse grained basic igneous tuffaceous agglomerate. The climate is humid temperature having a mean annual temperature of 45 to 50 degrees F., a mean January temperature of 36 degrees F., and a mean July temperature of 62 degrees F. The mean annual precipitation is 55 to 90 inches as rain and some snow in the winter and early spring. The frost-free season is 100 to 190 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Blachly, Harrington, Kilchis, Klickitat, McCully, Minniece, and Quartzville soils. Blachly soils have an ochric epipedon, are fine and have 5YR or redder hue. Harrington soils are skeletal and are 20 to 40 inches to bedrock. Kilchis soils are skeletal and 12 to 20 inches to bedrock. Klickitat soils have more than 35 percent hard rock fragments in the particle-size control section and have a lithic contact at a depth of 40 to 60 inches. McCully soils are fine and have hue of 5YR. Minniece soils are fine textured and poorly or somewhat poorly drained and have mottles or matrix colors having chroma of 2 or less in the control section. Quartzville soils are fine.
DRAINAGE AND PERMEABILITY: Well-drained; medium to very rapid runoff; moderate permeability.
USE AND VEGETATION: Used primarily for timber production, but some areas are cropped to small grains, grass, and pasture. Vegetation is mainly Douglas-fir, western hemlock, vine maple, salal, swordfern, and brackenfern.
DISTRIBUTION AND EXTENT: Foothills of western Cascade Mountains in Oregon and Washington. The series is extensive.
MLRA OFFICE RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Marion County, Oregon, 1974.
ADDITIONAL DATA: Characterization data on 2 profiles (S60 Oreg. 24-1) reported in Riverside Soil Survey Laboratory Report for soil sampled in Marion County, Oregon, 1960.
REMARKS: Based on the laboratory data and present criteria for ECDAM and medial family placement; the organic carbon requirement is not met by the data and was assumed the bulk density was too high (greater than 0.90 g/cubic centimeter).
Classification changed 6/98 based on 1998 Keys to Soil Taxonomy. Competing series have not been revised.