LOCATION CRAIGEN TX

Established Series
DKM-GWC-RM
07/2014

CRAIGEN SERIES

The Craigen series consists of very deep, moderately well drained soils. These nearly level to very gently sloping soils formed in sandy alluvium derived from strand plain deposits of the Beaumont Formation. Slope ranges from 0 to 2 percent. Mean annual air temperature is about 20 degrees C (68 degrees F), and mean annual precipitation is about 1473 mm (58 in).

TAXONOMIC CLASS: Loamy, siliceous, active, thermic Arenic Oxyaquic Glossudalfs

TYPICAL PEDON: Craigen fine sand--woodland. (Colors are for moist soil unless otherwise stated.)

A--0 to 18 (0 to 7 in); dark grayish brown (10YR 4/2) fine sand; weak medium subangular blocky structure; soft, friable, nonsticky and nonplastic; many fine, medium and coarse roots; common fine and medium interstitial pores; very strongly acid; clear wavy boundary. (10 to 25 cm [4 to 10 in] thick)

E1--18 to 43 cm (7 to 17 in); variegated matrix of brown (10YR 5/3) and pale brown (10YR 6/3) fine sand; weak coarse prismatic structure; soft, friable, nonsticky and nonplastic; many fine, medium and coarse roots; common fine and medium interstitial pores; common medium distinct dark grayish brown (10YR 4/2) masses of A material; very strongly acid; clear wavy boundary. (combined thickness of E subhorizons is 38 to 91 cm [15 to 36 in])

E2--43 to 61 cm (17 to 24 in); pale brown (10YR 6/3) loamy fine sand; weak coarse prismatic structure; soft, friable, nonsticky and nonplastic; many fine and medium roots; common fine and medium interstitial pores; many medium distinct yellowish brown (10YR 5/4) and strong brown (7.5YR 5/6) masses of oxidized iron with sharp boundaries lining pores; few fine distinct yellowish brown (10YR 5/6) masses of oxidized iron with clear boundaries along root channels; few fine distinct gray (10YR 5/1) iron depletions with sharp boundaries adjacent to iron concentrations; very strongly acid; clear wavy boundary.

E/B--61 to 81 cm (24 to 32 in); pale brown (10YR 6/3) fine sandy loam; weak medium subangular blocky structure; soft, friable, nonsticky and nonplastic; common fine and medium roots; common fine and medium interstitial pores; many medium faint light brownish gray (10YR 6/2) albic materials; 40 percent strong brown (7.5YR 5/6) B materials; 5 percent crawfish krotovina; very strongly acid; clear irregular boundary. (0 to 25 cm [0 to 10 in] thick)

Bt/E1--81 to 94 cm (32 to 37 in); 35 percent pale brown (10YR 6/3) and 35 percent strong brown (7.5YR 5/6) fine sandy loam; weak medium subangular blocky structure; slightly hard, firm, nonsticky and nonplastic; few fine roots between peds; common fine and medium interstitial pores; few faint clay films on surface of peds; few fine and medium iron-manganese masses; common fine prominent yellowish red (5YR 4/6) masses of oxidized iron with sharp boundaries in root channels and lining pores; 30 percent light brownish gray (10YR 6/2) albic materials (E); 5 percent crawfish krotovina; 20 percent brittle masses in Bt; very strongly acid; gradual wavy boundary.

Bt/E2--94 to 124 cm (37 to 49 in); 35 percent yellowish brown (10YR 5/6) and 35 percent strong brown (7.5YR 5/6) sandy clay loam; moderate medium prismatic structure parting to fine and medium subangular blocky; slightly hard, firm, nonsticky and nonplastic; few fine roots between peds; common fine and medium interstitial pores; few faint clay films on surface of prisms and peds; few fine and medium iron-manganese masses; common fine prominent yellowish red (5YR 4/6) masses of oxidized iron with sharp boundaries in root channels and lining pores; 30 percent light brownish gray (10YR 6/2) albic materials (E); 5 percent crawfish krotovina; 20 percent brittle masses in Bt; strongly acid; gradual wavy boundary.

Bt/E3--124 to 152 cm (49 to 60 in); strong brown (7.5YR 5/6) fine sandy loam; strong medium prismatic structure parting to fine and medium subangular blocky; slightly hard, firm, nonsticky and nonplastic; few fine roots between peds; common fine and medium interstitial pores; common distinct clay films on ped faces; 20 percent light brownish gray (10YR 6/2) albic materials (E); common fine prominent yellowish red (5YR 4/6) masses of oxidized iron with sharp boundaries in root channels and lining pores; many medium prominent grayish brown (10YR 5/2) iron depletions with clear boundaries on faces of peds; 5 percent crawfish krotovina; slightly acid; gradual wavy boundary. (combined thickness of Bt/E subhorizons is 51 to 102 cm [20 to 40 in])

Btg/E1--152 to 183 cm (60 to 72 in); gray (10YR 5/1) sandy clay loam; strong medium prismatic structure parting to fine and medium subangular blocky; slightly hard, firm, nonsticky and nonplastic; few fine roots between peds; common fine and medium interstitial pores; common distinct clay films on surface of prisms and peds; many medium prominent strong brown (7.5YR 5/6) masses of oxidized iron with sharp boundaries lining pores; common fine prominent yellowish red (5YR 4/6) masses of oxidized iron in root channels and pores; 20 percent light brownish gray (10YR 6/2) albic materials (E); 5 percent crawfish krotovina; slightly acid; gradual wavy boundary. (combined thickness of Btg/E subhorizons is 25 to 76 cm [10 to 30 in])

Btg/E2--183 to 203 cm (72 to 80 in); dark gray (10YR 4/1) fine sandy loam; strong medium prismatic structure parting to fine and medium subangular blocky; slightly hard, firm, nonsticky and nonplastic; few fine roots between peds; common fine and medium interstitial pores; common distinct clay films on faces of peds; many medium prominent yellowish brown (10YR 5/6) and strong brown (7.5YR 5/6) iron accumulations with sharp boundaries in matrix; 20 percent gray (10YR 5/1) albic materials (E); 5 percent crawfish krotovina; moderately acid.

TYPE LOCATION: Jefferson County, Texas; about 14 miles southwest of Beaumont on Interstate Highway 10 to intersection of Farm Road 365; 2.1 miles west on Farm Road 365; 0.5 mile north on private road; 50 feet east in forest. (Fannett USGS quad; Latitude: 29 degrees, 56 minutes, 10 seconds N; Longitude: 94 degrees, 17 minutes, 55 seconds W; WGS84)

RANGE IN CHARACTERISTICS:
Soil Moisture: An udic soil moisture regime. The soil moisture control section is moist in some or all parts for 300 days in normal years. July and August are the driest months, while the fall to spring months the wettest.
Mean annual soil temperature: 20.6 to 21.7 degrees C (69 to 71 degrees F)
Thickness of the A and E horizons, 51 to 102 cm (20 to 40 in)
Aluminum saturation in the A horizon: 15 to 25 percent
Aluminum saturation in the E horizon: 40 to 60 percent
Aluminum saturation in the argillic horions: 20 to 80 percent

Particle-size control section (weighted average)
Clay content: 18 to 30 percent

A Horizon
Hue: 10YR
Value: 3 or 4
Chroma: 3 to6
Texture: loamy fine sand or fine sand
Reaction: extremely acid to strongly acid

E and EB Horizon
Hue: 10YR
Value: 3 to 6
Chroma: 2 to 6
Texture: loamy fine sand or fine sandy
Redox concentrations: amount-few to common, shades-brown
Redox depletions: amount-none or few, shades-gray
Reaction: extremely acid to strongly acid

Bt/E Horizons
Hue: 7.5YR or 10YR
Value: 5 or 6
Chroma: 2 to 6
Texture: fine sandy loam, sandy clay loam or sandy clay
Albic materials: 15 to 40 percent
Redox concentrations: amount-few to common, shades-brown or yellow
Redox depletions: amount-few to common, shades-gray
Iron-manganese concentrations: amount-none to common-, kind-masses or nodules
Reaction: extremelt acid to strongly acid

Btg/E Horizon
Hue: 10YR or 2.5Y
Value: 4 to 7
Chroma: 1 to 3
Texture: fine sandy loam or sandy clay loam
Albic material: 15 to 40 percent
Redox concentrations: amount-common to many, shades-brown, red, or yellow
Redox depletions: amount-none to common, shades-gray, green or blue
Iron-manganese concentrations: amount-none to common-, kind-masses or nodules
Reaction: strongly acid to slightly acid

COMPETING SERIES: There are no competing series. Similar soils are the Anahuac (TX), Lovelady (TX), and Stowell (TX) series.

Anahuac soils: have loamy surface layers; clayey argillic horizon
Lovelady soils: have mixed mineralogy.
Stowell soils: are in a hyperthermic temperature regime; umbric epipedon

GEOGRAPHIC SETTING:
Parent material: sandy alluvium derived from mixed sources
Landscape: flat coastal plains
Landform: stand plains
Slope: 0 to 1 percent
Mean annual air temperature range: 19.5 to 20.6 degrees C (67 to 69 degrees F)
Mean annual precipitation range: 1321 to 1524 mm (48 to 58 in)
Precipitation Pattern: Precipitation is fairly uniform throughout the year with slight peaks in the spring and fall months.
Frost-free period: 240 to 300 days
Elevation: 3 to 22.9 m (10 to 75 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: This is mainly the Mollco (TX) soils. Mollco soils have loamy surface layers, are very poorly drained, and are in slightly lower depressional positions adjacent to Craigen soils. In some areas Mollco and Craigen soils are mapped in a complex.

DRAINAGE AND PERMEABILITY: Moderately well drained. Moderately permeable. Runoff is low. Endosaturation occurs at a depth of 102 to 203 cm (4 to 8 ft) below the surface during the winter and spring months in normal years.

USE AND VEGETATION: Mainly used for woodland. Trees are loblolly pine with various hardwoods. Typical understory is mainly bluestem, panicum, uniola, yaupon, greenbrier, southern bayberry, and Carolina jessamine.

DISTRIBUTION AND EXTENT: Southeast Texas; Land Resource Region-T; MLRA 152B. The series is of minor extent.

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

SERIES ESTABLISHED: Jefferson County, Texas; 1996.

REMARKS: These soils were included in the Caddo and Pocomoke series. The series was revised during the update of MLRA 152B

Diganostic horizons and features recognized in this pedon are:

Ochric epipedon-0 to 61 cm (0 to 24 in) (A, E1, and E2 horizons).
Albic horizon-18 to 61 cm (7 to 24 in) (E1 and E2 horizon).
Cambic horizon- 61 to 81 cm (E/B horizon)
Argillic horizon-81 to 203 cm (32 to 80 in) (Bt/E1,2,3, Btg/E1,2 horizons).
Glossic horizon-81 to 203 cm (24 to 80 in) (Bt/E1,2,3, Btg/E1,2 horizons).

Additional Comments: The assignment of the cation-exchange activity class is supported by laboratory data number S93TX-245-003 from Jefferson County, Texas. The redox features are considered both relic and contemporary and occur during abnormally wet conditions.

ADDITIONAL DATA: KSSL data from type location S93TX-245-003 from Jefferson County, Texas.

Taxonomic Version: Keys to Soil Taxonomy, Eleventh Edition, 2010

National Cooperative Soil Survey
U.S.A.