LOCATION CAPLIS LAEstablished Series
TAXONOMIC CLASS: Coarse-silty over clayey, mixed over smectitic, superactive, calcareous, thermic Oxyaquic Udifluvents
TYPICAL PEDON: Caplis very fine sandy loam--cultivated. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; dark reddish gray (5YR 4/2) very fine sandy loam; weak fine granular structure; very friable; few fine and very fine roots; very slightly effervescent in 1N HCl; neutral; clear smooth boundary. (4 to 10 inches thick)
C1--7 to 17 inches; reddish brown (5YR 4/4) loamy very fine sand; weak fine granular structure; very friable; few fine and very fine roots; common distinct bedding planes; slightly effervescent in 1N HCl; moderately alkaline; clear smooth boundary.
C2--17 to 24 inches; yellowish red (5YR 4/6) silt loam; weak fine granular structure; very friable; few fine roots; few fine and medium pores; common distinct bedding planes; many black iron/manganese stains between planes; strongly effervescent in 1N HCl; moderately alkaline; abrupt wavy boundary (combined thickness of the C horizon ranges from 10 to 32 inches).
2Bwssb1--24 to 35 inches; dark reddish brown (5YR 3/3) silty clay; coarse medium subangular blocky structure; very firm; sticky and plastic; few fine roots; common fine pores; common prominent pressure faces; few distinct intersecting slickensides; many wedged-shaped aggregates; many distinct black iron/manganese stains on ped faces; few distinct pockets of yellowish red (5YR 4/6) silt loam that are strongly effervescent in 1N HCl; slightly effervescent in 1N HCl in matrix; slightly alkaline; clear smooth boundary.
2Bwssb2--35 to 55 inches; dark reddish brown (5YR 3/3) silty clay; moderate coarse subangular blocky structure; very firm; sticky and plastic; common fine and medium pores; few soft CaCO3 concretions 2 to 5 mm. in diameter; common fine soft shell fragments; common prominent pressure faces; common distinct intersecting slickensides; many wedge-shaped aggregates; strongly effervescent in 1N HCl; moderately alkaline; clear wavy boundary (combined thickness of the Bwssb horizon ranges from 20 to 50 inches).
3C1--55 to 64 inches; very dark grayish brown (10YR 3/2) clay; massive; very firm; sticky and plastic; common medium pores; many soft black manganese nodules 2 to 5 mm. in diameter; common fine and medium prominent strong brown (7.5YR 5/8) and brown (7.5YR 4/4) masses of iron accumulation throughout; many medium faint dark gray (7.5YR 4/1) iron depletions between peds and in pore linings; slightly effervescent in 1N HCl; slightly alkaline; clear wavy boundary (0 to 10 inches thick).
3C2--64 to 84 inches; dark brown (7.5YR 3/2) clay; massive; firm; sticky and plastic; many soft black manganese nodules; common fine and medium prominent strong brown (7.5YR 5/8) masses of iron accumulation throughout; common fine and medium distinct brown (7.5YR 4/4) masses of iron accumulation throughout; many medium faint dark gray (7.5YR 4/1) iron depletions between peds and in pore linings; slightly alkaline.
TYPE LOCATION: Bossier Parish, Louisiana; about 21 miles south of Benton, La.; 0.75 miles north on U.S. Highway 71 from its intersection with La. Highway. 527 at Taylortown, La.; 174 feet northeast of center of U.S. Highway. 71 in cropland; Latitude 32 degrees, 23 minutes, 39 seconds N., and Longitude 93 degrees, 36 minutes, 20 seconds W., USGS Sligo topographic quadrangle; NAD 1983.
RANGE IN CHARACTERISTICS: Solum thickness and depth to a discontinuity with contrasting texture ranges from 20 to 36 inches. Caplis soils are calcareous in all parts between depths of 10 and 20 inches. Bedding planes are diagnostic and are present throughout the C horizon above the discontinuity
The Ap horizon has hue of 5YR or 7.5YR, value of 4 or 5 and chroma of 2 to 4. Texture is very fine sandy loam, loam, or silt loam. Reaction ranges from slightly acid to slightly alkaline.
The C horizon has hue of 5YR or 7.5YR, value of 3 to 6 and chroma of 4 to 8. Texture is loamy very fine sand, very fine sandy loam, silt loam, or loam. Some pedons have thin strata of coarser or finer textured material. Bedding planes are present throughout the horizon. Reaction ranges from neutral to moderately alkaline. Reaction in cold, dilute HCl is very slightly to strongly effervescent in all parts.
The 2Bwssb horizon has hue of 5YR, value of 3 or 4, and chroma of 3 to 6. Texture is silty clay or clay. Reaction ranges from neutral to moderately alkaline.
The 3C horizon, where present, has hue of 10YR to 5YR, value of 3 to 6 and chroma of 2 to 6. Texture is silty clay, clay or silty clay loam. Reaction is neutral to moderately alkaline.
COMPETING SERIES: There are no other series in the same family.
GEOGRAPHIC SETTING: Caplis soils are on level to gently sloping natural levees on flood plains that carry Permian Red Bed sediments. These soils formed in recent loamy sediments deposited over alluvial clays on natural levee splays. These splays formed during periods of higher river levels associated with log jams on the upper Red River during the late 1800's Slopes are 0 to 3 percent. Mean annual temperature is 65 degrees F. and the mean annual precipitation is about 46 inches near the type location. Frost-free rainfall ranges from 25 to 30 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Buxin, Coushatta, Latanier, Moreland, and Severn series. Buxin, Latanier and Moreland soils are on lower positions on the natural levee or on backswamp positions. All of these soils have a clayey subsoil that begins within a depth of 20 inches. Coushatta soils are on higher positions on the natural levees, have a cambic horizon with its upper boundary within a depth of 10 inches, and do not have a clayey discontinuity within 36 inches of the soil surface. Severn soils are on lower positions on the natural levees and do not have a clayey discontinuity within 36 inches of the soil surface.
DRAINAGE AND PERMEABILITY: Caplis soils are moderately well drained. A perched saturated zone is at 1.5 to 2.5 feet below the soil surface from December through June in normal years. Permeability is rapid in the loamy material and very slow in the clayey material. Runoff is negligible to very low.
USE AND VEGETATION: Most areas are cultivated. Cotton, wheat and corn are the principle crops. Native vegetation is mixed hardwoods with cottonwood, sycamore, pecan, hackberry and green ash.
DISTRIBUTION AND EXTENT: Red River Alluvium, MLRA 131C,
in Northwestern Louisiana and possibly Arkansas, Oklahoma and Texas. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Bossier Parish, Louisiana, 2004. The source of the series name is a small community in Bossier Parish, La..
REMARKS: These soils were formerly included in the Yahola series in the published Bossier Parish Soil Survey (1962).
Diagnostic horizons and features recognized in this pedon are:
- Lithologic discontinuity...As evidenced by an abrupt textural contact (at 24 inches)
- Burried soil...............24 to 55 inches (Bwssb horizon)
- Slickensides 24 to 55 inches (Bwssb horizon)
ADDITIONAL DATA: Laboratory data from the National Cooperative Soil Survey Laboratory, Lincoln, Nebraska. (S94LA-015-011)