LOCATION MUSTANG                 TX

Established Series
CLG-DNB-SAK-AKS
08/2025

MUSTANG SERIES

Depth class: Very deep
Drainage class: Poorly drained
Flooding frequency and duration: Occasional, brief
Saturated hydraulic conductivity: Low to moderately low
Shrink-swell potential: Low
Parent material: Sandy eolian and/or washover deposits of marine origin
Slope: 0 to 1 percent
Mean annual air temperature: 21 degrees C (70 degrees F)
Mean annual precipitation: 1016 millimeters (40 inches)

TAXONOMIC CLASS: Siliceous, hyperthermic Typic Psammaquents

TYPICAL PEDON: Mustang fine sand on a nearly level slope of a barrier island at an elevation of 1 meter. (Colors are for moist soil unless otherwise stated.)

A1--0 to 10 centimeters; brown (10YR 5/3) fine sand, pale brown (10YR 6/3) dry; single grain; loose; 5 percent very fine and fine roots and 2 percent medium roots; 15 percent medium and coarse prominent gray (2.5Y 5/1) iron depletions; 1 percent fine and medium prominent olive yellow (2.5Y 6/6) masses of oxidized iron; 1 percent fine shell fragments; nonsaline; slightly effervescent (HCl); slightly alkaline (pH 7.7); clear smooth boundary.

A2--10 to 28 centimeters; pale brown (10YR 6/3) fine sand, very pale brown (10YR 7/3) dry; single grain; loose; 4 percent very fine and fine roots; 2 percent fine and medium distinct light brownish gray (2.5Y 6/2) iron depletions; 2 percent fine and medium distinct light yellowish brown (2.5Y 6/4) and 1 percent fine and medium prominent strong brown (7.5YR 5/8) masses of oxidized iron; 1 percent fine shell fragments; nonsaline; very slightly effervescent (HCl); moderately alkaline (pH 8.1); clear smooth boundary. (A horizons are 8 to 48 centimeters thick.)

Cg1--28 to 53 centimeters; light brownish gray (10YR 6/2) fine sand, light gray (10YR 7/2) dry; single grain; loose; 3 percent very fine and fine roots; 7 percent medium grayish brown (2.5Y 5/2) iron depletions and 1 percent medium and coarse distinct very dark gray (N 3/) and dark gray (N 4/) iron depletions ; 2 percent fine and medium light yellowish brown (2.5Y 6/4) masses of oxidized iron; 1 percent fine shell fragments; nonsaline; very slightly effervescent (HCl); moderately alkaline (pH 8.0); clear smooth boundary.

Cg2--53 to 86 centimeters; grayish brown (2.5Y 5/2) fine sand, light brownish gray (2.5Y 6/2) dry; single grain; loose; 2 percent very fine and fine roots; 2 percent fine and medium faint gray (2.5Y 5/1) iron depletions and 1 percent fine and medium distinct very dark gray (N 3/) iron depletions; 1 percent fine and medium distinct light yellowish brown (2.5Y 6/3) masses of oxidized iron; 1 percent fine shell fragments; nonsaline; very slightly effervescent (HCl); moderately alkaline (pH 8.1); clear smooth boundary.

Cg3--86 to 114 centimeters; light brownish gray (2.5Y 6/2) fine sand, light gray (2.5Y 7/2) dry; single grain; loose; 1 percent very fine and fine roots; 1 percent fine distinct light yellowish brown (2.5Y 6/4) masses of oxidized iron; 1 percent fine shell fragments; nonsaline; very slightly effervescent (HCl); moderately alkaline (pH 8.3); clear smooth boundary.

Cg4--114 to 145 centimeters; gray (5Y 5/1) fine sand, light brownish gray (2.5Y 6/2) dry; single grain; loose; 5 percent medium distinct dark gray (N 4/) iron depletions; 20 percent medium and coarse prominent light olive brown (2.5Y 5/6) masses of oxidized iron; 1 percent fine and medium shell fragments; nonsaline; slightly effervescent (HCl); moderately alkaline (pH 8.2); gradual smooth boundary.

Cg5--145 to 180 centimeters; gray (5Y 6/1) fine sand, light gray (2.5Y 7/2) dry; single grain; loose; 5 percent medium distinct dark gray (N 4/) iron depletions; 5 percent medium and coarse prominent light olive brown (2.5Y 5/6) masses of oxidized iron; 1 percent fine shell fragments; nonsaline; slightly effervescent (HCl); moderately alkaline (pH 8.2); gradual smooth boundary.

Cg6--180 to 200 centimeters; gray (5Y 5/1) fine sand, light brownish gray (2.5Y 6/2) dry; single grain; loose; 5 percent medium distinct dark gray (N 4/) iron depletions; 3 percent medium prominent olive yellow (2.5Y 6/6) masses of oxidized iron; 1 percent fine and medium shell fragments; nonsaline; slightly effervescent (HCl); moderately alkaline (pH 8.1).

TYPE LOCATION: Kleberg County, TX; from the intersection of Park Road 22 and the county line between Kleberg and Nueces Counties; approximately 11.9 kilometers (8.0 miles) southwest to the end of Park Road 22 of Padre Island National Seashore and approximately 7.8 kilometers (4.5 miles) northeast of the intersections of Kleberg and Kenedy County boundaries with the Intracoastal Waterway; USGS quadrangle: South Bird Island Southeast, Texas

Latitude: 27.3143883
Longitude: -97.3425827
Datum: WGS84
Coordinate source: From hand-held GPS

RANGE IN CHARACTERISTICS:
Depth to bedrock: Greater than 200 centimeters
Moisture regime: Aquic
Depth to redoximorphic features: 0 to 25 centimeters
Reaction throughout: Neutral to strongly alkaline (pH 6.6 to 9.0)
Water table depth: 25 to 200 centimeters
Coarse fragments of marine shells and shell fragments comprise less than 15 percent by volume
Particle-size control section (weighted average):
Clay content-0 to 5 percent
Sand content-89 to 99 percent
The particle-size control section has less than 5 percent silt plus clay.

A horizon:
Hue-10YR or 2.5Y
Value-5 to 7
Chroma-2 or 3
Texture-fine sand
Redox Concentrations-0 to 8 percent
Redox depletions-0 to 15 percent
Electrical conductivity (dS/m)-0 to 4
Sodium adsorption ratio-0 to 10

Cg horizon:
Hue-2.5Y to 10YR or N/
Value-4 to 7
Chroma-0 to 2
Texture-fine sand
Redox concentrations-1 to 15 percent
Redox depletions-1 to 15 percent
Electrical conductivity dS/m)-0 to 2
Sodium adsorption ratio-0 to 8

COMPETING SERIES: These are Kesson (FL), Novillo, and Pompano (FL) series.
Kesson soils: have water tables very close to the soil surface and are found in tidal swamps and marshes in Florida.
Novillo soils: slightly lower on the landscape, have organic surfaces, are very poorly drained and are slightly lower on the landscape.
Pompano soils: have coarser textures and occur on different landforms away from barrier islands in the interior of Florida.

GEOGRAPHIC SETTING:
Parent material: Sandy eolian and/or washover deposits of marine origin
Landscape: Barrier islands
Landform: Barrier flats, low dunes, and low mounds
Slope: 0 to 1 percent
Mean annual precipitation: 660 to 1499 millimeters (26 to 59 inches)
Mean annual air temperature: 20 to 23 degrees C (69 to 71 degrees F)
Frost-free period: 315 to 365 days
Elevation: 0 to 2 meters (6 feet)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Daggerhill, Dianola, Galveston, Greenhill, Karankawa, Madre, Malaquite, Nass, Padre, Panam, and Veston series.
Daggerhill and Greenhill soils: have an ustic soil moisture regime and are on a higher landform position of convex foredunes and back-island dune fields.
Dianola and Madre soils: have sodium adsorption values greater than 13 and are on a similar, to slightly lower, landforms.
Galveston soils: have mixed mineralogy, have redoximorphic features deeper in their profiles, and are on slightly higher landforms on low dunes or mounds on barrier flats.
Karankawa soils: have a coarse-loamy control section, have a sodium adsorption ratio greater than 13, and are on a lower landform in tidal marshes.
Malaquite soils: have a cambic horizon, buried surface horizons and are on slightly lower landforms.
Nass soils: have a coarse-loamy control section, have mixed mineralogy, and are in a lower concave landform.
Padre and Panam soils: have uncoated sand grains, are dominated by resistant minerals, and are on slightly higher landforms of low dunes or mounds on barrier flats.
Veston soils: have finer soil textures, buried horizons, and are on similar landforms.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Poorly drained
Saturated hydraulic conductivity: Low to moderately low
Flooding frequency and duration: Occasional, brief
Seasonal water table: 28 to 76 centimeters
Shrink-swell: Low
Surface runoff: Negligible

USE AND VEGETATION:
Major uses: Recreation and wildlife habitat with few areas used for livestock grazing
Vegetation: Gulfdune paspalum, marshay cordgrass, seashore dropseed, Scribner's panicum, and beaked spikerush
Ecological site: R150BY650TX-Low Coastal Sand

DISTRIBUTION AND EXTENT:
General Area: Along the coast of Texas on barrier islands
Land Resource Region: T-Atlantic and Gulf Coast Lowland Forest and Crop Region
MLRA(s): 150B-Gulf Coast Saline Prairies
Extent: Moderate

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Special Projects Office

SERIES ESTABLISHED: Nueces County, Texas, 1963

REMARKS:
Sand mineralogy changed from mixed to siliceous based on a study by USDA-NRCS of the mineralogy of the barrier island system in 2002. The series range of electrical conductivity in the control section was changed from 0 to 8, to 0 to 2 in 2004 during the Soil Survey of Kenedy and Kleberg Counties, Texas.

Typical pedon taxonomic features:
Aquic conditions: 28 to 200 centimeters (Cg horizons)
Endosaturation: 28 to 200 centimeters (Cg horizons)
Iron depletions or depleted matrix: 0 to 200 centimeters (A and Cg horizons)
Masses of oxidized iron: 0 to 200 centimeters (A and Cg horizons)
Ochric epipedon: 0 to 28 centimeters (A horizons)
Particle-size control section: 25 to 100 centimeters (A2 and Cg horizons)
Taxonomic Version: Keys to Soil Taxonomy, 13th edition (2022)

ADDITIONAL DATA:
NSSL Characterization data from the type location (S20003TX273003). TAMU Reference Samples for mineralogy from Kenedy and Kleberg Counties, Texas (S2001TX261001 and S2003TX273010). Particle-size analysis, salinity and sodicity tests performed on eight pedons at the soil survey project office.

OSD User Pedon ID: S2003TX273003
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National Cooperative Soil Survey
U.S.A.