LOCATION FACEY CAEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Typic Argixerolls
TYPICAL PEDON: Facey loam - on an east facing convex slope of 45 percent under Idaho fescue, bluebunch wheatgrass and buckbrush at 4,000 feet elevation. (Colors are for dry soil unless otherwise stated. When described (7/17/75) the soil was moist throughout.)
A11--0 to 3 inches; dark grayish brown (10YR 4/2) loam, very dark brown (10YR 2/2) moist; moderate fine granular structure; slightly hard, friable, sticky and plastic; many very fine and fine roots; many fine random interstitial pores; 10 percent fine (2 to 5mm) pebbles; neutral (pH 7.3); abrupt smooth boundary. (2 to 4 inches thick)
A12--3 to 10 inches; grayish brown (10YR 5/2) loam, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; slightly hard, friable, sticky and plastic; common very fine and fine, and many medium roots; few very fine tubular and common fine vesicular pores; 10 percent (2 to 5mm) fine pebbles; neutral (pH 7.3); abrupt smooth boundary. (7 to 15 inches thick)
B1t--10 to 19 inches; brown (10YR 5/3) light clay loam, dark brown (10YR 4/3) moist; strong medium subangular blocky structure; slightly hard, friable, sticky and plastic; few very fine and fine, and many medium and coarse roots; common very fine and fine tubular pres; common thin clay films in pores; 10 percent (2 to 5mm) pebbles; neutral (pH 7.0); clear wavy boundary. (7 to 11 inches thick)
B21t--19 to 28 inches; yellowish brown (10YR 5/4) light clay loam, dark yellowish brown (10YR 4/4) moist; strong medium subangular blocky structure; hard, firm, sticky and plastic; few very fine and fine, and common medium roots; common very fine and fine, and few medium tubular pores; common thin clay films on peds and in pores; 15 percent fine (2 to 5mm) pebbles; slightly acid (pH 6.5); gradual wavy boundary. (7 to 12 inches thick)
B22t--28 to 39 inches; yellowish brown (10YR 5/4) clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, sticky and plastic; few very fine and fine, and common medium roots; common very fine and fine tubular pores; many thin clay films on peds and in pores and few moderately thick in pores; 10 percent (2 to 5mm) pebbles; slightly acid (pH 6.5); gradual wavy boundary. (8 to 14 inches thick)
B23t--39 to 46 inches; yellowish brown (10YR 5/4) clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; hard, firm, sticky and plastic; few very fine and fine, common medium, and many coarse roots; few medium, and common very fine and fine tubular pores; common thin and moderately thick clay films on peds and in pores; 10 percent fine (2 to 5mm) pebbles; slightly acid (pH 6.5); abrupt wavy boundary. (5 to 10 inches thick)
B3t--46 to 59 inches; very pale brown (10YR 7/3 and 7/4) clay loam, dark yellowish brown (10YR 4/4) moist; massive; hard, firm, sticky and plastic; few very fine and fine, and common medium roots; few fine tubular pores; few moderately thick and common thin clay films in pores; 10 percent fine (2 to 5mm) pebbles; neutral (pH 7.0). (0 to 20 inches thick)
R--59 to 62 inches; metamorphosed sedimentary bedrock.
TYPE LOCATION: Siskiyou County, California; 5.5 miles northwest of Gazelle, California; approximately 2,080 feet west and 700 feet north of the southeast corner sec. 13, T. 43 N., R. 7 W.
RANGE IN CHARACTERISTICS: Depth to a lithic contact is 40 to 60 inches. Mean annual soil temperature is 47 to 58 degrees F.; mean January soil temperature is 34 to 38 degrees F.; mean July soil temperature is 68 to 78 degrees F. The soil temperature exceeds 41 degrees F. from March 20 to November 30 and exceeds 47 degrees F. from April 25 to November 15. The soil between the depths of 4 and 12 inches is dry for 90 days from mid-July to mid-October in moist years and is moist in some or all parts the rest of the year. The mollic epipedon is 10 to 19 inches thick. The base saturation ranges from 75 to 95 percent throughout the soil.
The A horizon is very dark grayish brown, dark brown, dark grayish brown, brown, or grayish brown (10YR 3/2, 3/3, 4/2, 4/3, 5/2, 5/3; 7.5YR 3/2, 4/2, 5/2). Moist colors are black, very dark brown, very dark gray, very dark grayish brown or dark brown (10YR 2/1, 2/2, 3/1, 3/2, 3/3; 7.5YR 3/2). It is loam with 15 to 20 percent clay and 5 to 15 percent fine (1 to 5mm) gravel. It is slightly acid or neutral.
The B2t horizon is brown, dark yellowish brown, yellowish brown, pale brown, light yellowish brown, or light brown (10YR 4/3, 4/4, 5/3, 5/4, 6/3, 6/4; 7.5YR 4/4, 5/4, 6/4). Moist colors are dark brown, dark yellowish brown, brown, or yellowish brown (10YR 3/3, 3/4, 4/3, 4/4, 5/3, 5/4; 7.5YR 4/4, 5/4). It is loam or clay loam with 18 to 35 percent clay and 0 to 35 percent fine (2 to 5mm) gravel. It is medium acid to neutral. Some pedons have weak secondary lime accumulations in the lower part of the horizon.
Some pedons have a C horizon that have similar colors and textures as the B2t horizon, common have slightly or strongly effervescent secondary lime accumulations and are mildly alkaline or moderately alkaline.
COMPETING SERIES: These are the Colma, Dragoon, Duzel, Foehlin (T), Gerig (T), Glenrose, Ladd, Lobitos, Los Gatos, Mehlhorn, Taneum, Tieton and Tweedy series. Colma soils lack a lithic contact and have less than 20 degrees F. difference between average summer and average winter soil temperatures. Dragoon soils are underlain by weathered rock at 20 to 38 inches and are dry about 60 days. Duzel (T) soils lack a lithic contact and are dry about 60 days. Gerig soils are underlain by weathered tuff at 20 to 40 inches, have a solum 16 to 24 inches thick and have a component of pyroclastic or ash materials. Glenrose soils lack a lithic contact, have a dark gray or black A horizon and have a component of loess. Ladd soils have a large amount of quartz diorite, lack a lithic contact and have smooth slopes of 0 to 12 percent. Lobitos and Los Gatos soils have a lithic contact at 20 to 40 inches and have less than 20 degrees F. difference between the average summer and average winter soil temperatures. Mehlhorn soils have hard basalt at depths of 20 to 40 inches. Taneum soils are dry for 60 to 80 consecutive days, have a component of loess, 15 to 30 percent sand and 40 to 55 percent silt. Tieton soils are dry for 80 to 90 consecutive days, have a component of loess, 15 to 30 percent sand and 40 to 55 percent silt. Tweedy soils have a paralithic contact at 20 to 40 inches, are dry 140 to 150 days and have less than 15 percent rock fragments.
GEOGRAPHIC SETTING: Facey soils are on foot slopes and north and east facing exposures in small bodies on uplands. Slopes are 5 to 50 percent. The soils formed in colluvium and materials weathered from metamorphosed sedimentary and igneous rocks of the Klamath Mountains. Elevations are 2,000 to 5,000 feet. The climate is continental and subhumid with warm dry summers and cold moist winters. Mean annual precipitation is 16 to 20 inches. Seasonal snowfall is 18 to 24 inches. Mean January temperature is 28 to 36 degrees F.; mean July temperature is 64 to 69 degrees F.; mean annual temperature i1s 45 to 52 degrees F. Frost-free season is 80 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bidwell, Bonnet, Jilson, Kinkel, Stoner and the competing Duzel soils. Bidwell soils have ca horizons and an aridic moisture regime. Bonnet soils lack an argillic horizon and have a loamy-skeletal control section. Jilson soils are 10 to 20 inches deep to hard bedrock. Kinkel soils have an ochric epipedon and a loamy-skeletal argillic horizon. Stoner soils have an ochric epipedon, a cambic horizon; and a coarse-loamy control section.
DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff; moderately slow permeability.
USE AND VEGETATION: Used mainly as rangeland and wildlife habitat. Native vegetation is buckbrush, mountain mahogany, manzanita, white oak, scattered ponderosa pine, western juniper, bluebunch wheatgrass, Idaho fescue, Sandberg bluegrass and needlegrass.
DISTRIBUTION AND EXTENT: North-central California. Series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Siskiyou County, California, 1978.
REMARKS: The soil is classified on the following assumptions: 1) The organic carbon is greater than 0.6 percent in the A horizon but less than 0.6 percent at a depth of 20 inches and, 2) The base saturation is assumed.
OSED scanned by SSQA. Last revised by state on 11/78.
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. The remainder of this document has not been updated.