LOCATION LOZEN TX
Established Series
ALS, WJG
08/2012
LOZEN SERIES
The Lozen series consists of very shallow and shallow, well drained soils that formed in loamy residuum and colluvium weathered from Permian limestone and dolomite bedrock. Slopes range from 10 to 95 percent. The mean annual precipitation is about 584 mm (23 in) and the mean annual temperature is about 12 degrees C (54 degrees F).
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Lithic Haplustolls
TYPICAL PEDON: Lozen extremely cobbly loam, on a northwest-facing 35 percent slope in rangeland at an elevation of 2,658 m (8,720 feet). (Colors are for dry soil unless otherwise noted).
A1--0 to 22 cm (0 to 9 in); very dark brown (10YR 2/2) extremely cobbly loam, black (10YR 2/1) moist; moderate fine and medium granular structure; soft, friable, slightly sticky, slightly plastic; many very fine and fine roots; 10 percent subangular 251 to 600 mm limestone fragments and 60 percent subangular 76 to 250 mm limestone fragments; slightly alkaline; diffuse smooth boundary.
A2--22 to 43 cm (9 to 17 in); very dark brown (10YR 2/2) extremely cobbly loam, black (10YR 2/1), moist; moderate fine and medium granular structure; slightly hard, friable, slightly sticky, slightly plastic; common very fine and fine roots; 20 percent subangular 251 to 600 mm limestone fragments and 55 percent subangular 76 to 250 mm limestone fragments; slightly alkaline; very abrupt irregular boundary. (Combined thickness of the A horizon is 8 to 45 cm [3 to 18 in])
R--43 to 68 cm (17 to 27 in); indurated limestone bedrock.
TYPE LOCATION: Culberson County, Texas; from the trailhead at the Pine Springs campground in Guadalupe Mountains National Park; 4.6 miles south-west on the Guadalupe Peak Trail; site is 100 feet west of Guadalupe Peak. (Guadalupe Peak, TX USGS topographic quadrangle; Latitude: 31 degrees, 53 minutes, 29 seconds N; Longitude: 104 degrees, 51 minutes, 40 seconds W; UTM Easting 513127 m, UTM Northing 3528399 m, UTM Zone 13, NAD83.)
RANGE IN CHARACTERISTICS: (Depths given are measured from the mineral soil surface)
Depth to limestone bedrock: 11 to 44 cm (4 to 18 in)
Particle-size control section (weighted average):
Clay content: 18 to 34 percent
Rock fragment content: 35 to 80 percent; 5 to 65 percent gravel; 5 to 70 percent cobbles; 0 to 50 percent stones
Oi horizon (where present)
Hue: 10YR
Value: 2 to 4 dry and moist
Chroma: 1 to 4 dry and moist
Texture: slightly decomposed plant material
A horizon
Hue: 7.5YR or 10YR
Value: 2 to 4 dry, 2 or 3 moist
Chroma: 1 to 4 dry, 1 to 3 moist.
Texture of the fine-earth fraction: sandy loam, loam, silt loam, or clay loam
Clay content: 18 to 33 percent
Coarse fragments: 25 to 80 percent total; 10 to 60 percent gravels; 0 to 45 percent cobbles
Effervescence: none or very slight
Reaction: slightly alkaline
Bw horizon (where present)
Hue: 7.5YR or 10YR
Value: 3 to 5 dry, 2 to 4 moist
Chroma: 2 to 4 dry, 1 to 4 moist.
Texture of the fine-earth fraction: loam, sandy clay loam, or clay loam
Clay content: 23 to 34 percent
Coarse fragments: 35 to 75 percent total; 5 to 50 percent gravels; 25 to 55 percent cobbles
Effervescence: none or very slight
Reaction: slightly alkaline
R layer:
Fractures: greater that 10cm (4 in) apart
Bedrock kind: indurated limestone and dolomite
COMPETING SERIES: These are;
Baller (CO),
Boriana (AZ),
Demayo (CO),
Docdee (NM),
Far (AZ),
Huachuca (AZ).
Baller,
Boriana and
Huachuca soils: have less than 18 percent clay in the control section
Demayo soils: have basalt rock fragments in the control section
Docdee soils: have sandstone rock fragments in the control section
Far soils: are slightly acid to strongly acid
GEOGRAPHIC SETTING:
Parent Material: colluvium and residuum weathered from Permian age limestone and dolomite
Landscape: Mountains
Landform: Mountainsides and Ridges
Slope: 10 to 90 percent
Soil moisture: Typic Ustic soil moisture regime.
Mean annual soil temperature: 9.0 to 15.0 degrees C (48 to 59 degrees F)
Mean annual air temperature: 8.0 to 14.0 degrees C (46 to 57 degrees F)
Mean annual precipitation: 508 to 660 mm (20 to 26 inches)
Precipitation pattern: Most precipitation occurs as high intensity rain during afternoon convective thunderstorms from June to September.
Frost-free period: 135 to 250 days
Elevation: 1584 to 2667 m (5196 to 8749 ft)
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Desario (NM),
Biduya (TX), and
Victorio (TX) series.
Biduya soils: have an aridic ustic soil moisture regime and occur on hills at a lower elevation.
Desario soils: have a calcic horizon and occur on hills at a lower elevation.
Victorio soils: have more than 35 percent clay in the control section and occur on similar positions.
DRAINAGE AND PERMEABILITY: Well drained; Runoff is high on 10 to 20 percent slopes; and very high on slopes over 20 percent; moderate permeability.
USE AND VEGETATION: This soil is used for wildlife habitat and recreation. Vegetation is alligator juniper, one seed juniper, ponderosa pine, oaks, pine muhly, mountain muhly, New Mexico muhly, bull muhly, little bluestem, big bluestem, yellow Indiangrass, finestem needlegrass, pinyon ricegrass, Arizona Fescue, plains lovegrass, cliff fendlerbush, mountain mahagony, and New Mexico agave.
DISTRIBUTION AND EXTENT: LRR G; Western Great Plains Range and Irrigated Region; MLRA 70C-Central New Mexico Highlands. The soil is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas
SERIES ESTABLISHED: Culberson County, Texas; 2010. The name is from the sister of the Apache war chief, Biduya or Victorio as he was called, who inhabited this area.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: 0 to 43 cm (0 to 17 in) (A1 and A2 horizons)
Lithic contact: 43 cm (27 in) (top of R layer)
The taxonomic version is Keys to Soil Taxonomy, Eleventh Edition, 2010
ADDITIONAL DATA: None
National Cooperative Soil Survey
U.S.A.