LOCATION CARL MOEstablished Series
TAXONOMIC CLASS: Fine, smectitic, thermic Typic Epiaquerts
TYPICAL PEDON: Carl silt loam, on a 0 to 1 percent slope in pastureland. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 4 inches; very dark gray (10YR 3/1), crushed, silty clay loam, gray (10YR 5/1), crushed, dry; moderate fine platy structure parting to weak fine subangular blocky; very firm, sticky and plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 7.2 pH meter 1:1 water; 1 percent angular limestone-cherty gravel; slightly alkaline; clear smooth boundary.
A--4 to 13 inches; black (10YR 2/1), crushed, silty clay loam, dark gray (10YR 4/1), crushed, dry; moderate fine platy structure parting to moderate medium subangular blocky; very firm, very sticky and very plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 6.7 pH meter 1:1 water; many prominent continuous pressure faces throughout and common prominent continuous clay films throughout; 1 percent angular limestone-cherty gravel; slightly acid; clear wavy boundary. (10 to 15 inches thick)
2Bt--13 to 27 inches; black (10YR 2/1), crushed, silty clay, dark gray (10YR 4/1), crushed, dry; moderate medium and coarse prismatic structure parting to strong fine angular blocky; very firm, very sticky and very plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 6.7 pH meter 1:1 water; many prominent continuous pressure faces throughout and common prominent continuous clay films throughout; 1 percent angular limestone-cherty gravel; neutral; clear wavy boundary. (0 to 15 inches thick)
2Btgss1--27 to 38 inches; dark gray (10YR 4/1), interior, silty clay; common fine and medium prominent yellowish brown (10YR 5/4) moist irregular iron accumulations throughout; moderate medium and coarse prismatic structure parting to strong fine angular blocky; very firm, very sticky and very plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 7.3 pH meter 1:1 water; very few prominent continuous intersecting slickensides on faces of peds; many prominent continuous pressure faces throughout; common prominent continuous clay films throughout; common medium and coarse irregular extremely hard carbonate concretions pedogenic throughout and common fine and medium rounded black (N 2/0) soft soft masses of iron-manganese pedogenic throughout; 1 percent angular limestone-cherty gravel; neutral; clear wavy boundary.
2Btgss2--38 to 47 inches; gray (10YR 5/1), interior, silty clay; common fine and medium prominent yellowish brown (10YR 5/6) moist irregular iron stains throughout; strong medium and coarse prismatic structure parting to strong fine angular blocky; very firm, very sticky and very plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 7.5 pH meter 1:1 water; very few prominent continuous intersecting slickensides on faces of peds; many prominent continuous pressure faces throughout; common prominent continuous clay films throughout; very few distinct discontinuous manganese or iron-manganese accumulations on faces of peds; common medium and coarse irregular extremely hard carbonate concretions pedogenic throughout; common fine and medium rounded hard iron-manganese concretions pedogenic throughout; 1 percent angular limestone-cherty gravel; slightly alkaline; clear wavy boundary.
2Btgss3--47 to 53 inches; gray (10YR 5/1), interior, silty clay; common fine and medium prominent yellowish brown (10YR 5/8) moist irregular iron accumulations throughout; strong medium and coarse prismatic structure parting to strong fine angular blocky; very firm, very sticky and very plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 7.4 pH meter 1:1 water; very few prominent continuous intersecting slickensides on faces of peds; many prominent continuous pressure faces throughout; common prominent continuous clay films throughout; very few distinct discontinuous manganese or iron-manganese accumulations on faces of peds; common medium and coarse irregular extremely hard carbonate concretions pedogenic throughout; common fine and medium rounded hard iron-manganese concretions pedogenic throughout; 3 percent angular limestone-cherty gravel; slightly alkaline; gradual wavy boundary.
2Btgss4--53 to 68 inches; gray (10YR 5/1), interior, silty clay; common fine and medium prominent yellowish brown (10YR 5/8) moist iron accumulations throughout; strong medium and coarse prismatic structure parting to strong fine angular blocky; very firm, very sticky and very plastic; few very fine and fine roots between peds; common very fine and fine low continuity tubular pores; 7.4 pH meter 1:1 water; very few prominent continuous intersecting slickensides on faces of peds; many prominent continuous pressure faces throughout and common prominent continuous clay films throughout; very few distinct discontinuous manganese or iron-manganese accumulations on faces of peds; common medium and coarse irregular extremely hard carbonate concretions pedogenic throughout and common fine and medium rounded hard iron-manganese concretions pedogenic throughout; 4 percent angular limestone-cherty gravel; slightly alkaline; clear wavy boundary. (2Btgss horizons is 30 -45 inches thick)
3Btg--68 to 80 inches; gray (10YR 6/1), interior, very gravelly clay; common fine and medium prominent yellowish brown (10YR 5/8) moist irregular iron accumulations throughout; weak coarse prismatic structure parting to moderate fine subangular blocky; very firm, very sticky and very plastic; common very fine and fine low continuity tubular pores; 7.5 pH meter 1:1 water; many prominent continuous clay films on faces of peds; common fine and medium rounded hard iron-manganese concretions pedogenic throughout; 30 percent angular limestone-cherty gravel and 1 percent angular limestone-cherty cobbles; slightly alkaline.
TYPE LOCATION: Jasper County, Missouri; 3900 ft. south 700 ft. east of NW corner of Sec 4 T29N R31W ; Latitude: 37 degrees 17 minutes 0.0 seconds N, Longitude: 94 degrees 19 minutes 20.0 seconds W
RANGE IN CHARACTERISTICS:
Solum: 80 inches or more.
Control section: 35 to 60 percent clay.
Depth to 2Bt: 10 to 15 inches
Depth to slickensides: 12 to 27 inches
Depth to 3Bt horizon: 50 to 75 inches
A horizon:
Hue: 10YR
Value: 2 or 3, moist and 4 or 5, dry
Chroma: 1 or 2
Redoximorphic features: None to common iron
accmulations and accumulations and none to common iron-
manganese accumulations
Texture: silty clay loam or silty clay
Rock fragments: 0 to 7 percent gravel
Reaction: 6.1 - 7.8
2Bt horizon:
Hue: 10YR
Value: 2 or 3, moist and 4 or 5, dry
Chroma: 1
Redoximorphic features: None to common iron
accumulations in shades of brown or yellow, none to
few iron-manganese accumulations, and none to few
carbonate concretions
Texture: clay, silty clay, or silty clay loam
Rock fragments: 0 to 7 percent gravel
Reaction: 6.1 - 7.3
Upper 2Btgss horizon:
Hue: 10YR
Value: 2 or 3, 4 or 5 dry
Chroma: 1
Redoximorphic features: Few to common iron
accumulations in shades of brown or yellow, none to
common iron-manganese accumulations, and none to common
carbonate concretions
Texture: clay or silty clay
Rock fragments: 0 to 7 percent
Reaction: 6.1 - 7.3
Lower 2Btgss horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5
Chroma: 1
Redoximorphic features: Few to many iron
accumulations in shades of brown or yellow, none to
few iron-manganese accumulations, and none to common
carbonate concretions
Texture: clay, silty clay, or silty clay loam or their
gravelly analogs
Rock fragments: 0 to 7 percent
Reaction: 6.6 - 7.8
2Bss horizon (if present):
Hue: 10YR
Value: 4
Chroma: 4
Redoximorphic features: Common iron-manganese
accumulations, common iron depletions in shades of
gray, and none to common carbonate concretions
Texture: clay or its gravelly or cobbly analogs
Rock fragments: 0 to 25 percent
Reaction: 7.4 - 7.8
3Btg horizon:
Hue: 10YR
Value: 4 to 6
Chroma: 1
Redoximorphic features: Common iron accumulations in
shades of brown or red and none to common iron-
manganese accumulations
Texture: gravelly to very cobbly clay, clay loam, silty
clay loam, or silty clay
Rock fragments: 30 to 40 percent
Reaction: 6.6 - 8.4
3Bt and 4Bt horizons (if present):
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 4 to 8
Redoximorphic features: Few iron depletions in
shades of gray, common iron - manganese accumulations,
and none to common iron accumulations in shades of
brown
Texture: very gravelly clay or sandy clay loam to
extremely stony clay or sandy clay loam
Rock fragments: 30 to 85 percent
Reaction: 6.6 - 7.8
COMPETING SERIES: There are no competing series in the same family.
GEOGRAPHIC SETTING:
Slope: nearly level (0 to 1 percent)
Landform: slightly concave terraces adjacent to streams
Landscape: upland
Parent Material: thin mantle of silty loess over clayey alluvium over gravelly alluvium.
GEOGRAPHICALLY ASSOCIATED SOILS:
Maplegrove (proposed): moderately well drained soils on higher convex uplands
Wanda: well drained soils on higher convex uplands.
Verdigris: well drained soils on flood plains.
DRAINAGE AND PERMEABILITY:
Drainage: Poor
Permeability: very slow
Runoff: low.
USE AND VEGETATION: Most areas are in pasture and hayland. A few areas are in cropland. Principal crops are wheat, corn, milo, and soybeans. Native vegetation is prairie grasses, mainly big and little bluestem mixed with encroaching hardwoods.
DISTRIBUTION AND EXTENT: Southwest Missouri and possibly Southeast Kansas and Northeast Oklahoma. The soils are of minor extent.
MLRA OFFICE RESPONSIBLE: Salina, Kansas
SERIES PROPOSED: Jasper County, Missouri, 1996. Name taken from a town in the southwest part of Jasper County.
REMARKS: These soils were formerly included in the Woodson series.
Diagnostic horizons and features recognized in this series are:
Mollic epipedon - the zone from the surface of the soil to a depth of 27 inches. (Ap and 2Bt horizons)
Intersecting slickensides - the zone from 27 to 68 inches. (2Btgss horizons)
Chroma of 1 and redox concentrations - the zone from 0 to 80 inches (Ap, 2Bt, and 2Btgss1, 2Btgss2, 2Btgss2, 2Btgss3, 2Btgss4 and 3Btg horizons).