LOCATION REMNOY CAEstablished Series
TAXONOMIC CLASS: Loamy, mixed, superactive, thermic, shallow Natric Durixeralfs
TYPICAL PEDON: Remnoy very fine sandy loam, on a slope of less than 1 percent under alkali sacaton, saltgrass and filaree at 270 feet elevation. (Colors are for dry soil unless otherwise stated. When described 8/29/74 the soil was dry throughout.)
A--0 to 1 inch; light brownish gray (2.5Y 6/2) very fine sandy loam, dark grayish brown (2.5Y 4/2) moist; strong medium platy structure; hard, firm, nonsticky and nonplastic; many very fine and medium roots; many very fine interstitial pores; strongly effervescent, carbonates disseminated (5 percent calcium carbonate equivalent); strongly alkaline (pH 8.7); abrupt smooth boundary. (1/2 to 3 inches thick)
E--1 to 5 inches; light gray (2.5Y 7/2) very fine sandy loam, grayish brown (2.5Y 5/2) moist; strong thick platy structure; hard, firm, nonsticky and nonplastic; many very fine, fine and medium roots; many very fine interstitial and few fine vesicular pores; strongly effervescent, carbonates disseminated (5 percent calcium carbonate equivalent); strongly alkaline (pH 8.7); abrupt smooth boundary. (2 to 6 inches thick)
Btn--5 to 15 inches; light gray (2.5Y 7/2) clay loam, dark grayish brown (2.5Y 4/2) moist; weak medium prismatic structure parting to moderate medium subangular blocky; very hard, very firm, very sticky and very plastic; many very fine and fine roots matted on top of pan; common fine and medium tubular pores; continuous moderately thick clay films on peds and in pores; slightly effervescent, carbonates disseminated (3 percent calcium carbonate equivalent); common fine prominent brownish yellow (10YR 6/8) redoximorphic iron concentrations, yellowish brown (10YR 5/6) moist; very strongly alkaline (pH 10.1); abrupt irregular boundary. (6 to 16 inches thick)
Bqkm1--15 to 23 inches; light gray (2.5Y 7/2) indurated lime-silica duripan with 0.5mm to 1mm thick laminar layer present within the duripan, grayish brown (2.5Y 5/2) moist; massive; extremely hard, extremely firm; few very fine roots in cracks; common fine tubular pores; common moderately thick clay films in cracks and in pores; violently effervescent, carbonates disseminated and segregated as common fine seams (19 percent calcium carbonate equivalent); many fine distinct light olive brown (2.5Y 5/4) redoximorphic iron concentrations, olive brown (2.5Y 4/4) moist; duripan fragments do not slake during prolonged soaking in water or concentrated hydrochloric acid; abrupt wavy boundary. (4 to 9 inches thick)
Bqkm2--23 to 29 inches; light gray (2.5Y 7/2) indurated lime-silica duripan with 0.5mm to 1mm thick laminar layer present within the duripan, dark grayish brown (2.5Y 4/2) moist; massive; very hard, very firm, few very fine tubular pores; violently effervescent, carbonates disseminated and segregated as common fine seams (11 percent calcium carbonate equivalent); many fine prominent olive yellow (2.5Y 6/6) redoximorphic iron concentrations, olive brown (2.5Y 4/4) moist; duripan fragments do not slake during prolonged soaking in water or concentrated hydrochloric acid; abrupt wavy boundary. (0 to 6 inches thick)
2C1--29 to 52 inches; light gray (2.5Y 7/2) silt loam, grayish brown (2.5Y 5/2) moist; massive; slightly hard, very friable, nonsticky and nonplastic; common very fine interstitial and common fine tubular pores; violently effervescent, carbonates disseminated (7 percent calcium carbonate equivalent); few fine prominent olive yellow (2.5Y 6/6) redoximorphic iron concentrations, olive brown (2.5Y 4/4) moist; very strongly alkaline (pH 10.4); abrupt wavy boundary. (0 to 24 inches thick)
3C2--52 to 63 inches; light brownish gray (2.5Y 6/2) sandy loam, dark grayish brown (2.5Y 4/2) moist; massive; slightly hard, very friable, slightly sticky and nonplastic; few fine tubular pores; violently effervescent, carbonates disseminated (6 percent calcium carbonate equivalent); very strongly alkaline (pH 10.0); abrupt wavy boundary. (0 to 40 inches thick)
4C3--63 to 70 inches; light gray (2.5Y 7/2) silt loam, grayish brown (2.5Y 5/2) moist; massive; slightly hard, very friable, slightly sticky and slightly plastic; few fine and medium roots; many fine tubular pores; many fine prominent olive yellow (2.5Y 6/6) redoximorphic iron concentrations, olive brown (2.5Y 4/4) moist; very strongly alkaline (pH 9.5).
TYPE LOCATION: Kings County, California; about 245 feet west of 4th Avenue and 2,500 feet south of Dover Avenue; about 2,500 feet south and 245 feet west of the northeast corner of section 36, T. 17 S., R. 22 E., MDB&M; Latitude 36 degrees, 24 minutes, 33 seconds north and Longitude 119 degrees, 31 minutes, 44 seconds west; USGS Burris Park Quadrangle.
RANGE IN CHARACTERISTICS: Depth to a duripan composed of silica and carbonates, ranges from 10 to 20 inches. The mean annual soil temperature ranges from 59 degrees to 62 degrees F. Remnoy soils are usually effervescent throughout. The carbonates are disseminated or segregated in filaments, soft masses, or concretions. The upper part of the A horizon, the E horizon, and the lower part of the C horizon are noneffervescent in some pedons. Reaction is strongly alkaline to very strongly alkaline. It is saline-sodic below the E horizon.
Few to many fine or medium distinct redoximorphic iron concentrations occur in the Btn horizon, the duripan, and the C horizon. They have moist color of 5Y 6/3, 5/3; 2.5Y 4/4; 10YR 5/6, 4/6, 3/6; or 5YR 4/6.
The A horizon has dry color of 2.5Y 6/2, 7/1 or 7/2. The texture is very fine sandy loam or silt loam. Clay content is 8 to 25 percent. This horizon has strong thin, medium, or thick platy structure. The organic carbon is less than 0.5 percent.
The E horizon tongues into the Bt horizon and between prism faces in some pedons.
The Btn horizon has dry color of 2.5Y 5/2, 6/2, 7/2; or 10YR 7/3 and moist color of 2.5Y 4/2, 5/2, 4/4; or 10YR 4/3. It is clay loam and averages 27 to 35 percent clay. This horizon has weak to strong, medium or coarse, prismatic or columnar structure that parts to subangular blocky. There are continuous or moderately thick clay films in pores and on ped faces. The sodium adsorption ratio ranges from 13 to 100.
The Bqkm horizon has dry color of 2.5Y 6/2 or 7/2. The duripan contains 10 to 20 percent carbonates. It is not fractured in some pedons.
The lower part of the C horizon has dry color of 2.5Y 7/2, 6/2, 6/4 or 7/4. It is stratified sandy loam to silt loam.
COMPETING SERIES: There are no other soils in this family.
GEOGRAPHIC SETTING: Remnoy soils occur on alluvial fans, terraces, and flood plains at elevations of 190 to 300 feet. Slopes range from 0 to 2 percent. The soils formed in mixed alluvium dominantly from granitic and sedimentary rocks. The climate is arid, and has hot dry summers and cool moist winters. The mean annual precipitation is 7 to 8 inches. Mean January temperature is about 45 degrees F.; mean July temperature is about 81 degrees F. Mean annual temperature is 62 to 65 degrees F. The frost-free season is 250 to 275 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kimberlina, Excelsior, Wasco and Nord soils. Kimberlina, Excelsior and Wasco soils lack a natric horizon, lack a duripan and have a coarse-loamy particle-size control section. Nord soils have a mollic epipedon, lack a natric horizon and lack a duripan.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; low or medium runoff; slow permeability. The frequency of flooding none to rare. The soil is protected by upstream diversions of water due to dams, canals and levees.
USE AND VEGETATION: Irrigated cropland, commonly growing cotton, barley, and alfalfa. The soil is also used for livestock grazing and building site development. The natural vegetation is annual grasses and forbs.
DISTRIBUTION AND EXTENT: Middle of the San Joaquin Valley near creek drainages from the Sierra Nevada. Series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Kings County, California, 1980.
REMARKS: Originally proposed with an aridic moisture regime. This revision changes the moisture regime to xeric based on climate data from the area.
Diagnostic horizons and layers recognized in this pedon:
1.0 Ochric Epipedon -- The zone from the soil surface to a depth of 5 inches (A and E horizons).
2.0 Natric Horizon -- The zone from a depth of 5 to 15 inches (Btn horizon).
3.0 Silica and lime indurated duripan -- The zone from a depth of 15 to 29 inches (Bqkm1 and Bqkm2 horizons).
4.0 Redoximorphic iron concentrations -- The zone from a depth of 5 to 52 inches (Btn, Bqkm1, Bqkm2, and 2C1 horizons).