LOCATION TUPMAN CA
Tentative Series
REV. KJO/CAS/PWB/MRS/KDA/KP
12/2022
TUPMAN SERIES
The Tupman series consists of very deep, well drained soils that formed in alluvium derived from granitic and/or sedimentary rock. The Tupman soils are on fan remnants and stream terraces. Slope is 0 to 5 percent. The mean annual precipitation is about 178 mm (7 in) and the mean annual temperature is about 18 degrees C (64 degrees F).
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, thermic Fluventic Haplocambids
TYPICAL PEDON: Tupman gravelly sandy loam, 0 to 2 percent slopes, in a fallow field, at an elevation of 122 meters (430 feet). (Colors are for dry soil unless otherwise stated. When described on July 27, 1989, the soil was dry throughout.)
Ap--0 to 15 cm (0 to 6 in); light gray (2.5Y 7/2) gravelly sandy loam, olive brown (2.5Y 4/3) moist; 15 percent clay; weak coarse cloddy structure; soft, very friable, slightly sticky and slightly plastic; many very fine roots; many very fine and few fine interstitial pores; 32 percent gravel; slightly effervescent, carbonates disseminated; moderately alkaline (pH 8.0); abrupt smooth boundary. (5 to 20 cm [2 to 8 in] thick)
Bw--15 to 36 cm (6 to 14 in); light gray (2.5Y 7/2) sandy loam, olive brown (2.5Y 4/3) moist; 16 percent clay; weak very coarse subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few very fine roots; common very fine and few fine tubular pores; 12 percent fine and medium gravel; slightly effervescent, carbonates disseminated; moderately alkaline (pH 8.0); abrupt smooth boundary. (0 to 28 cm [0 to 11 in] thick)
C1--36 to 76 cm (14 to 30 in); light gray (2.5Y 7/2) and pale brown (10YR 6/3) stratified very gravelly coarse sand to gravelly silt loam, light olive brown (2.5Y 5/4) and brown (10YR 4/3) moist; 12 percent clay; massive; soft and slightly hard, very friable and friable, nonsticky to sticky and nonplastic to plastic; few very fine roots; common very fine tubular, many very fine, many fine and common medium interstitial pores; 40 percent fine and medium gravel; slightly effervescent, carbonates disseminated; moderately alkaline (pH 8.2); abrupt smooth boundary. (0 to 25 cm [0 to 10 in] thick)
C2--76 to 94 cm (30 to 37 in); very pale brown (10YR 7/3) and light yellowish brown (2.5Y 6/4) stratified sandy loam to loam, gray (10YR 5/1) and olive brown (2.5Y 4/4) moist; 9 percent clay; massive; soft and slightly hard, very friable, nonsticky and slightly sticky and nonplastic and slightly plastic; many very fine and few fine interstitial pores in most of the horizon but few very fine tubular pores in strata of loam; 10 percent fine and medium; slightly effervescent, carbonates disseminated; moderately alkaline (pH 8.2); abrupt smooth boundary. (0 to 10 cm [0 to 4 in] thick)
C3--94 to 122 cm (37 to 48 in); pale yellow (2.5Y 7/4) sandy loam, light olive brown (2.5Y 5/4) moist; 8 percent clay; massive; soft, very friable, nonsticky and nonplastic; common fine interstitial and tubular pores; 3 percent fine and medium gravel; violently effervescent; carbonates disseminated; moderately alkaline (pH 8.2); abrupt smooth boundary. (0 to 28 cm [0 to 11 in] thick)
C4--122 to 152 cm (48 to 60 in); pale yellow (2.5Y 7/4) and light olive brown (2.5Y 5/4) gravelly loamy sand, light olive brown (2.5Y 5/4) moist; 7 percent clay; massive; soft, very friable, nonsticky and nonplastic; many very fine and fine interstitial pores; 30 percent fine and medium gravel; violently effervescent; carbonates disseminated and segregated as coatings on the underside of pebbles; moderately alkaline (pH 8.2).
TYPE LOCATION: Kern County, California, Southwest Part; in map unit 153, Tupman gravelly sandy loam, 0 to 2 percent slopes; about 9.3 kilometers (5.8 miles) west of downtown Taft; about 152 meters (500 feet) east of Gardner Field Road at a point 3 kilometers (2 miles) north of Cadet Road; 85 meters (280 feet) north and 67 meters (220 feet) west of the southeast corner of section 23, T. 32 S., R. 24 E.; Mount Diablo Base and Meridian; latitude 35 degrees, 07 minutes, 26 seconds north and longitude 119 degrees, 21 minutes, 35 seconds west; USGS Pentland, California, Quadrangle, NAD83.
RANGE IN CHARACTERISTICS:
Soil temperature: Average annual is 17 to 19 degrees C (62 to 67 degrees F) and the soil temperature is never below 4 degrees C (47 degrees F). The soils have a thermic temperature regime.
Soil moisture: The soils have an aridic soil moisture regime. The soil moisture control section is dry throughout from about mid April to mid December and is never moist more than 90 consecutive days.
Diagnostic feature(s):
Ochric epipedon thickness: 10 to 25 cm
Cambic horizon thickness: 15 to 50 cm
Particle size control section weighted average:
Rock fragments: 0 to 15 percent gravel
Clay content: 5 to 18 percent
Reaction: moderately alkaline
Surface fragments: 10 to 50 percent granitic and/or sedimentary gravel.
Ap horizon:
Hue: 10YR, 2.5Y
Value: 5 to 8 dry, 3 to 6 moist
Chroma: 2 or 3 dry, 2 to 4 moist
Texture of the fine earth fraction: sandy loam
Content of clay: 10 to 18 percent
Content of organic matter: 0.8 to 1.5 percent
Content of rock fragments: 20 to 40 percent gravel
Bw Horizon:
Hue: 10YR, 2.5Y
Value: 5 to 8 dry, 3 to 6 moist
Chroma: 2 or 3 dry, 2 to 4 moist
Texture of the fine earth fraction: sandy loam
Content of clay: 10 to 18 percent
Content of organic matter: 0.5 to 0.9 percent
Calcium carbonate equivalent: 0 to 4 percent
Content of rock fragments: 10 to 20 percent gravel
C Horizons:
Hue: 10YR, 2.5Y
Value: 5 to 8 dry and 3 to 6 moist
Chroma: 2 to 4, dry or moist
Texture of the fine earth fraction: loam, silt loam, sandy loam, loamy sand, sand, coarse sand
Content of clay: 5 to 18 percent
Content of organic matter: 0.1 to 0.9 percent
Calcium carbonate equivalent: 0 to 4 percent
Content of rock fragments: 0 to 50 percent gravel
COMPETING SERIES: There are no competing series at this time.
GEOGRAPHIC SETTING: Tupman soils are on fan remnants and stream terraces. Slope is 0 to 5 percent. Tupman soils formed in alluvium derived from sedimentary and/or granitoid rock. Elevations are 109 to 407 meters (355 to 1,335 feet). The climate is arid with hot dry summers and cool, somewhat moist winters. The mean annual precipitation is 152 to 203 mm (6 to 8 in). The mean annual temperature is 17 to 18 degrees C (62 to 65 degrees F). Mean July temperature is about 29 degrees C (85 degrees F), and mean January temperature is about 4 degrees C (47 degrees F). The frost-free season is 250 to 300 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Kimberlina,
Milagro,
Pleitito,
Pyxo, and
Wasco soils. Kimberlina soils on floodplains and recent alluvial fans, Milagro soils on alluvial fans and fan skirts, Pleitito soils on alluvial fans and flood plains, and Wasco soils on recent alluvial fans and flood plains do not have a cambic horizon. Pyxo soils, on hills and mountains, are moderately deep and have slopes from 9 to 50 percent.
DRAINAGE AND PERMEABILITY: Well drained; slow or medium runoff; moderately high saturated hydraulic conductivity. These soils are subject to rare flooding.
USE AND VEGETATION: Tupman soils are used for livestock grazing and for irrigated field and row crops, orchards and vineyards. Native vegetation is allscale saltbush, rabbitbush, red brome and redstem filaree.
DISTRIBUTION AND EXTENT: Along the rim of the Southern San Joaquin Valley of California, MLRA 17. The series is not extensive.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California
SERIES PROPOSED: Kern County, California, 1991. Tupman is the name of a small community in southwestern Kern County.
REMARKS:
Particle size control section for this pedon: 25 to 100 cm
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon 0 to 15 cm
Cambic horizon 15 to 36 cm
Organic carbon decreases irregularly with depth.
Soil classified using the 12th Edition of the Keys to Soil Taxonomy.
National Cooperative Soil Survey
U.S.A.