LOCATION LONGSFOLLY CAEstablished Series
TYPICAL PEDON: Longsfolly loamy sand on a east facing hill under a stand of chamise chapperal at an elevation of 1,680 feet (511 meters); (Colors are for moist soil unless otherwise noted.)
A1--0 to 4 inches (0 to 10 centimeters); grayish brown (10YR 5/2), loamy sand, very dark grayish brown (10YR 3/2) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 10 percent gravel; slightly acid (pH 6.1); clear wavy boundary.
A2--4 to 16 inches (10 to 40 centimeters); light brownish gray (10YR 6/2), loamy sand, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and nonplastic; many very fine, and common fine, medium, and coarse roots; many very fine irregular pores; 10 percent gravel; slightly acid (pH 6.3); clear wavy boundary. (Combined thickness of A horizons is 10 to 20 inches, 25 to 50 centimeters)
C1--16 to 28 inches (40 to 70 centimeters); light gray (10YR 7/2), gravelly loamy coarse sand, brown (10YR 5/3) moist; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common very fine through medium roots; many very fine irregular pores; 30 percent gravel; moderately acid (pH 5.8); gradual wavy boundary.
C2--28 to 50 inches (70 to 127 centimeters); very pale brown (10YR 8/3), gravelly loamy sand, pale brown (10YR 6/3) moist; weak medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common very fine through medium roots; common very fine irregular pores; 30 percent gravel; moderately acid (pH 5.9); gradual wavy boundary.
Cr--50 to 63 inches (127 to 160 centimeters); soft massive fanglomerate fractured at intervals of <4 inches (10 centimeters).
TYPE LOCATION: San Benito County, California; about 3,800 feet (1,155 meters) northeast of the Chalone Creek Maintenance Station; 640 feet east and 620 feet south of the northwest corner of section 36, T 16S, R 7E; USGS Bickmore Canyon, California topographic quadrangle; 36 degrees 30 minutes 1.70 seconds north latitude and 121 degrees 9 minutes 59.10 seconds west longitude; UTM 664214 meters E, 4041021 meters N, zone 10.
RANGE IN CHARACTERISTICS:
Depth to paralithic contact: 40 to 60 inches (100 to 150 centimeters).
Mean annual soil temperature: 60 to 63 degrees F (16 to 17 degrees C).
Soil moisture control section: dry in all parts from about June 15 to November 15 (150 days), and moist in all parts from about January 15 to May 1 (105 days).
Particle size control section: clay content: 2 to 5 percent clay, Coarse fragments: 15 to 35 percent gravel .
Soil Reaction: moderately acid to slightly alkaline
Base Saturation by ammonium acetate: 83 to 90 %
A horizon(s):
Hue: 10YR
Value: 3 through 6 dry; 2, 3 moist
Chroma: 2, 3 dry or moist
Texture of the fine earth fraction: loamy sand
Clay content: 2 to 5 percent
Rock fragments: 5 to 35 percent gravel
C horizon(s):
Hue: 10YR
Value: 5 through 8 dry; 3 or 4 moist
Chroma: 3 or 4 dry or moist
Texture of the fine earth fraction: loamy sand, loamy coarse sand
Clay content: 2 to 5 percent
Rock fragments: 5 to 40 percent
COMPETING SERIES: There are no other series in this family.
GEOGRAPHIC SETTING: Longsfolly soils are on east and north facing hills. Slopes range from 2 to 50 percent. These soils formed in residuum weathered from fanglomerate of the Temblor Formation. Elevation is 950 to 2,400 feet (290 to 735 meters). The climate is characterized by hot, dry summers and cool, moist winters. The mean annual precipitation is 17 to 19 inches (432 to 483 millimeters) and the mean annual air temperature is about 59 to 63 degrees F (15 to 17 degrees C). The frost free season is 190 to 210 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Ordeal, Passion and Tuborcio soils. The Ordeal soils are moderately deep to paralithic bedrock on mostly south-facing backslopes of hills under chamise. The Passion soils are shallow to paralithic bedrock on shoulders of hills under chamise. The Tuborcio soils have a fine textured argillic horizon and are on backslopes of hills under blue oak savannah.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained, rapid permeability, high runoff. They do not flood or pond.
USE AND VEGETATION: This soil is used for watershed, wildlife habitat and recreation. Vegetation is mixed chaparral.
DISTRIBUTION AND EXTENT: San Benito and Monterey Counties, California in MLRA 15 -- Central California Coast Range. These soils are of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: San Benito County, California, 2006. Source of name: rock formation in Pinnacles National Monument. This series was established based on limited acreage observed within the National Park Service Pinnacles National Monument boundary.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Mollic Epipedon- the zone from 0 to 16 inches (0 to 40 centimeters) (A1 and A2 horizons)
ADDITIONAL DATA:
Pedon information for another location:
Pedon Type: range in characteristcs Lab Source ID: NSSL
Pedon Purpose: research site Lab Pedon #: 06N0201