LOCATION GOODCREEK TXTentative Series
The Goodcreek series consists of very deep, well drained, moderately permeable soils that formed in alluvium derived from surrounding uplands. These loamy soils are on flood plains and of the Central Rolling Red Plains (MLRA 78B and 78C). Slope ranges from 0 to 1 percent. Mean annual temperature is about 63 degrees F., and mean annual precipitation is about 24 inches.
TAXONOMIC CLASS: Fine-silty, mixed, superactive, thermic Fluventic Haplustolls
TYPICAL PEDON: Goodcreek loamcropland. (Colors are for dry soil unless otherwise stated.)
A1--0 to 6 inches; brown (7.5YR 4/3) loam, dark brown (7.5YR 3/3) moist, moderate fine and medium subangular blocky structure; hard, friable; many very fine and fine roots; common very fine, fine, and medium pores; common worm casts and channels; noneffervescent; slightly alkaline; clear smooth boundary.
A2--6 to 18 inches; brown (7.5YR 4/3) loam, dark brown (7.5YR 3/2) moist; weak medium prismatic structure parting to moderate fine and medium subangular blocky; hard, friable; common very fine, fine, and medium roots; common very fine, fine, and few medium pores; common worm casts and channels; strongly effervescent; moderately alkaline; gradual smooth boundary. (Combined thickness of the A horizons ranges from 10 to 20 inches thick)
Bw--18 to 25 inches; brown (7.5YR 5/3) clay loam, brown (7.5YR 4/3) moist; moderate coarse prismatic structure parting to moderate fine and medium subangular blocky; hard, friable; common very fine and fine roots; few fine and medium pores; few worm casts and channels; few fine concretions of calcium carbonate; strongly effervescent; moderately alkaline; gradual smooth boundary. (5 to 21 inches thick)
Bk1--25 to 48 inches; reddish brown (5YR 5/4) clay loam, reddish brown (5YR 4/4) moist; moderate medium prismatic structure parting to moderate medium subangular blocky; hard, friable; few very fine and fine roots; few fine and medium pores; few worm casts and channels; common threads and a few fine concretions of calcium carbonate; violently effervescent; moderately alkaline; diffuse smooth boundary. (12 to 25 inches thick)
Bk2--48 to 64 inches; reddish brown (5YR 5/4) clay loam; reddish brown (5YR 4/4) moist; weak medium prismatic structure parting to moderate fine and medium subangular blocky; hard, friable; few very fine and fine roots; few very fine and fine pores; few worm casts and channels; common threads and a few fine concretions of calcium carbonate; violently effervescent; moderately alkaline; diffuse smooth boundary. (15 to 30 inches thick)
BC--64 to 80 inches; reddish brown (5YR 5/4) clay loam, reddish brown (5YR 4/4) moist; weak coarse prismatic structure parting to weak medium subangular blocky structure; hard, friable; very few very fine and fine roots; few very fine, fine, and medium pores; few worm casts and channels; few threads and few fine concretions of calcium carbonate; few fragments of dolomite as much as 1cm across long axis; violently effervescent; moderately alkaline.
TYPE LOCATION: Foard County, Texas; from intersection of U.S. Highway 70 and State Highway 6 in Crowell; 3.2 miles south on State Highway 6; 9.3 miles west and south on Farm Road 2003 to unpaved county road; 1.85 miles south on county road; 0.38 mile west; 0.7 mile southwest to a ranch road; 900 feet northwest on road, and from end of road 700 feet west northwest in rangeland: Latitude: 33 degrees, 53 minutes, 01.2 seconds North; Longitude: 99 degrees, 54 minutes, 10.9 seconds West. Boiling Spring, Texas topographic quadrangle; NAD 1927.
RANGE IN CHARACTERISTICS:
Depth to secondary calcium carbonate: 14 to 26 inches
Depth to cambic horizon: 10 to 20 inches
Particle-size control section (weighted average)
Clay content: 18 to 35 percent
Sand content: less than 15 percent fine sand or coarser
Coarse Fragments: 0 to 1 percent
Thickness of the mollic epipedon: 10 to 20 inches (may include some Bw horizon)
Buried horizons: Occur below 50 inches in some pedons
A Horizon
Hue: 5YR to 10YR
Value: 4 or 5 (2 or 3 moist)
Chroma: 2 or 3
Texture: loam, clay loam, silt loam, or silty clay loam
Clay content: 20 to 35 percent
Calcium carbonate equivalent: 0 to 5 percent
EC (dS/m): 0 to 2
SAR: 0 to 2
Reaction: slightly alkaline or moderately alkaline
Effervescence: noneffervescent to strongly effervescent
Bw Horizon
Hue: 5YR or 7.5YR
Value: 4 to 6 (3 or 4 moist)
Chroma: 2 to 4
Texture: loam, silt loam, clay loam, or silty clay loam
Clay content: 20 to 35 percent
Calcium carbonate equivalent: 1 to 10 percent
Visible calcium carbonate: none to a few very fine or fine concretions
EC (dS/m): 0 to 2
Gypsum: 0 to less than 1 percent
SAR: 0 to 3
Effervescence: Very slightly effervescent to strongly effervescent
Reaction: Slightly alkaline or moderately alkaline
Bk1 Horizon
Hue: 5YR or 7.5YR
Value: 5 or 6 (4 or 5 moist)
Chroma: 3 or 4
Texture: loam, silt loam, silty clay loam, or clay loam
Clay content: 18 to 32 percent
Coarse fragments: 0 to 2 percent
Calcium carbonate equivalent: 3 to 15 percent
Visible calcium carbonate: 2 to 5 percent films, threads, fine masses, and concretions
EC (dS/m): 1 to 4 percent
Gypsum: 0 to 3 percent
SAR: 2 to 6
Effervescence: Strongly effervescent to violently effervescent
Reaction: Slightly alkaline or moderately alkaline
Bk2 Horizon
Hue: 5YR or 7.5YR
Value: 4 to 6 (3 to 5 moist)
Chroma: 3 or 4
Texture: loam, clay loam, or silty clay loam
Clay content: 18 to 32 percent
Coarse fragments: 0 to 3 percent
Calcium carbonate equivalent: 3 to 15 percent
Visible calcium carbonate: 2 to 5 percent films, threads, fine masses, and concretions
EC (dS/m): 2 to 8
Gypsum: 0 to 5 percent
SAR: 2 to 6
Effervescence: Strongly effervescent to violently effervescent
Reaction: Moderately alkaline
BC Horizon
Hue: 5YR or 7.5YR
Value: 4 to 6 (3 to 5 moist)
Chroma: 3 to 6
Texture: loam, clay loam, or silty clay loam
Clay content: 15 to 32 percent
Coarse fragments: 0 to 3 percent
Calcium carbonate equivalent: 2 to 15 percent
Visible calcium carbonate: 0 to 5 percent
EC (dS/m): 1 to 4 percent
Gypsum: 0 to 3 percent
SAR: 3 to 6
Effervescence: Strongly effervescent to violently effervescent
Reaction: Moderately alkaline
COMPETING SERIES: These are the
Asher,
Ashport,
Clearfork, Lamport, and
Spur series. Similar soils are the
Clairemont,
Rups, and
Wheatwood series.
Asher series: These soils have stratified coarse-silty textures depths of 20 to 38 inches and occur in a moister climate.
Ashport series: These soils occur in a moister climate.
Clearfork series: These soils have cumulic epipedons.
Clairemont series: These soils are stratified and have ochric epipedons.
Lamport series: These soils occur in a moister climate.
Rups series: These soils have saline horizons.
Spur series: These soils have a fine-loamy particle size control section.
Wheatwood series: These soils have ochric epipedons.
GEOGRAPHIC SETTING:
Parent material: Holocene age alluvium derived from Permian age sediments.
Landform: Flood plains that ranges from frequently to rarely flooded.
Slope: 0 to 1 percent
Mean annual temperature: 61 to 64 degrees F.
Mean annual precipitation: 22 to 26 inches
Frost-free period: 205 to 230 days
Elevation: 1200 to 1800 feet
Thornthwaite annual P-E indices: 32 to 38
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Cottonwood,
Kingco,
Knoco,
Nipsum,
Quanah,
Talpa,
Vernon, and
Wheatwood series.
Cottonwood, Knoco, Talpa and Vernon series: These soils occur on higher upland areas and are less than 40 inches to bedrock.
Kingco, Nipsum, and Quanah series: These very deep soils are on uplands.
Wheatwood series: This soil occurs on flood plains and has an ochric epipedon.
DRAINAGE AND PERMEABILITY: Well drained. Moderate permeability. Runoff is negligible. This soil is rarely to frequently flooded for very brief periods.
USE AND VEGETATION: These soils are used for both cropland and rangeland. The main crops are small grains, cotton, and sorghums. Native vegetation is blue grama, buffalograss, sideoats grama, western wheatgrass, sand bluestem, and Texas wintergrass. Mesquite, lotebush, redberry juniper, and prickly pear cactus are common invaders.
DISTRIBUTION AND EXTENT: North Texas; LRR H; MLRA 78B and 78C; Small extent
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES PROPOSED: Foard County, Texas, 2004. The name is from the nearby creek at the type location.
REMARKS: This soil was previously included with the Spur series.
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 18 inches
Cambic horizon: 18 to 65 inches
Particle size control section: 10 to 40 inches. (A2 horizon, Bw horizon and Bk1 horizon)
Range site: Loamy Bottomland (078BY080TX)
The assignment of the cation-exchange activity class is supported by NSSL data S03-TX-005 from Foard County, Texas.
Taxonomic version: Keys to Soil Taxonomy, Ninth Edition, 2003