LOCATION LYDIANN TX

Established Series
JKW-SAK-RM
09/2015

LYDIANN SERIES

The Lydiann series consists of very deep, excessively drained, rapidly permeable soils that formed in eolian deposits of Pleistocene age. These nearly very gently sloping to gently sloping soils occur on strandplain. Slope ranges from 0 to 5 percent. Mean annual precipitation is about 840 mm (33 in), and mean annual air temperature is about 22 degrees C (71 degrees F).

TAXONOMIC CLASS: Hyperthermic, coated Ustic Quartzipsamments

TYPICAL PEDON: Lydiann fine sand, in rangeland; elevation is 12.2 m (40 ft) (Colors are for dry soil unless otherwise stated.)

A--0 to 14 cm (0 to 5 in); light brownish gray (10YR 6/2) fine sand, light gray (10YR 7/2), dry; single grain, loose, common fine and medium roots and many very fine roots; many fine interstitial pores; strongly acid; clear smooth boundary. (Thickness of the A horizon is 12 to 61 cm [5 to 24 in])

C1--14 to 40 cm (5 to 16 in); light gray (10YR 7/2) fine sand, very pale brown (10YR 8/2), dry; single grain, loose; common fine and medium roots and many very fine roots; common fine interstial pores; very strongly acid; clear smooth boundary.

C2--40 to 130 cm (16 to 51 in); light gray (10YR 7/2) fine sand, very pale brown (10YR 8/2), dry; single grain, loose; common very fine and fine roots; common fine interstitial pores; strongly acid; gradual smooth boundary.

C3--130 to 154 cm (51 to 61 in); very pale brown (10YR 7/3) fine sand, very pale brown (10YR 8/3), dry; single grain, loose; common very fine roots; common fine interstitial pores; very strongly acid; gradual smooth boundary. (Combined thickness of the C horizon is 142 to 191 cm [56 to 75 in])

C4--154 to 203 cm (in); very pale brown (10YR 8/2) fine sand, very pale brown (10YR 8/3), dry; single grain, loose; strongly acid.

TYPE LOCATION: Aransas County, TX; from the Aransas National Wildlife Refuge headquarters, about 3.1 miles south on refuge road; 0.5 mile northeast on refuge road, then about0.1 mile northwest on refuge road in rangeland; Tivoli SE USGS topographic quadrangle; Latitude: 28 degrees, 16 minutes, 29.8 seconds N; Longitude: 96 degrees, 48 minutes, 4.0 seconds W; Datum: WGS84.

RANGE IN CHARACTERISTICS:
Soil Moisture: An ustic soil moisture regime. The soil moisture control section is most in some or all parts for less than 275 days in normal years.
Mean annual soil temperature: 22.2 to 23 degrees C (72 to 73 degrees F)

Particle-size control section (weighted average)
Clay content: 1 to 3 percent
Sand content: 91 to 98 percent

A Horizon:
Hue: 10YR
Value: 5 to 7
Chroma: 2 or 3
Texture: fine sand
Clay content: 1 to 3 percent
Sand content: 91 to 97 percent
Reaction: strongly acid or moderately acid

C Horizons:
Hue: 10YR or 2.5Y
Value: 6 to 8
Chroma: 1 to 3
Texture: fine sand
Clay content: 1 to 3 percent
Sand content: 91 to 99 percent
Redox concentrations: amount-none or few, shades-brown
Reaction: strongly acid to slightly alkaline

COMPETING SERIES: There are no series in the same family. Similar soils are the Daggerhill (TX), Falfurrias (TX), Gainesville (FL), Greenhill (TX), Lake (FL), and Rupley (TX) series.
Daggerhill soils: are uncoated and are subject to storm surge from tropical storms
Falfurrias soils: have less than 90 percent resistant minerals in the control section.
Gainesville soils: have a loamy sand surface horizon; allow colors redder than 10YR; are well drained
Greenhill soils: Are uncoated and subject to storm surge from tropical storms.
Lake soils: allow colors redder than 10YR; have a sand surface texture
Rupley soils: in a udic moisture regime; somewhat excessively drained

GEOGRAPHIC SETTING:
Parent material: eolian sands derived from fluviomarine deposits of mixed origin
Landscape: low coastal plains
Landform: dune slack on strand plain
Slope: 1 to 5 percent
Mean annual precipitation: 737 to 991 mm (29 to 39 in)
Precipitation Pattern: Peaks in precipitation occur in the Spring and Fall months.
Mean annual air temperature: 21.7 to 22.8 degrees C (71 to 73 degrees F)
Frost-free period: 271 to 365 days
Elevation: 1.5 to 13.7 m (5 to 45 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dietrich, Mustang, Palobia, Portalto, and Rockport soils.
Dietrich, Palobia, and Portalto soils: have an argillic horizon and are on a lower position further inland.
Mustang and Rockport soils: are wetter; in a lower landform further inland.

DRAINAGE AND PERMEABILITY: Excessively drained. Permeability is rapid. Runoff is negligible. Rarely flooded due to tropical storms from June to October.

USE AND VEGETATION: Used for rangeland and wildlife habitat. Native vegetation consists of bluestems and live oak is the dominant tree.

DISTRIBUTION AND EXTENT: Coastal Bend region of Texas generally from the Guadalupe River to the Nueces River; Land Resource Region T; MLRA 150B (Gulf Coast Saline Prairies; the series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES PROPOSED: Aransas County, Texas, 2014. The name is from the Lydia Ann Channel that runs along San Jose Island in Aransas County.

REMARKS: The series was formerly included in the Falfurrias series. The series was separated based on the amount of weatherable minerals and landform.

Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: 25 to 100 cm (10 to 40 in) (C1 and C2 horizons)
Ochric epipedon: 0 to 14 cm (0 to 5 in). (A horizons)

ADDITIONAL DATA: None

Taxonomic Version: Keys to Soil Taxonomy, Twelfth Edition, 2014

National Cooperative Soil Survey
U.S.A.