LOCATION LAMPSHIRE               AZ

Established Series
Rev. MLR/PDC/CEM
10/2014

LAMPSHIRE SERIES

The Lampshire series consists of very shallow and shallow, well drained soils that formed in slope alluvium, residuum, and colluvium from igneous rocks. Lampshire soils are on hills and mountains and have slopes of 0 to 90 percent. The mean annual precipitation is about 14 inches (356 mm) and the mean annual air temperature is about 62 degrees F (17 degrees C).

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, nonacid, thermic Lithic Ustic Torriorthents

TYPICAL PEDON: Lampshire very cobbly loam rangeland. (Colors are for dry soil unless otherwise noted.)
A--0 to 8 inches (0 to 20 cm); grayish brown (10YR 5/2) very cobbly loam, very dark grayish brown (10YR 3/2) moist; moderate fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many fine and few medium roots; many fine tubular pores; 20 percent gravel and 40 percent cobble; neutral (pH 7.0); abrupt irregular boundary (4 to 20 inches thick).

2R--8 to 60 inches (20 to 152 cm); tuff.

TYPE LOCATION: Santa Cruz County, Arizona; approximately 2 miles west-northwest of Tubac; on the southeast slope of a low hill; 800 feet south and 500 feet west of the northeast corner of Section 11, T.21 S., R.12 E.

RANGE IN CHARACTERISTICS:
Soil Moisture: Intermittently moist in some part of the soil moisture control section during July-September and December-February. Driest during May and June. Ustic aridic soil moisture regime. The epipedon is moist in some part less than 90 days (cumulative) when the soil temperature is above 41 degrees F. (5 degrees C) in 7 out of 10 years.

Soil Temperature: 59 to 72 degrees F (15 to 22 degrees C).

Depth to bedrock: 4 to 20 inches. Some pedons may have a layer less than 3 inches thick of weathered bedrock above the lithic contact

Particle-Size Control Section (weighted average):
Clay Content: 10 to 20 percent
Rock Fragments: 35 to 70 percent
Depth to Bedrock: 4 to 20 inches (10 to 51 cm)
Reaction: slightly acid to slightly alkaline
Calcium Carbonate: few coatings on bedrock in some pedons
Organic matter: 1 to 2 percent

A or C horizons
Hue: 7.5YR, 10YR
Value: 3 to 6 dry, 2 to 4 moist
Chroma: 1 to 4, dry or moist
Texture: loam, sandy loam, fine sandy loam, silt loam, coarse sandy loam

COMPETING SERIES: These are the Coyanosa (TX), Lingua (TX) and Reduff (TX) series. Lingua and Reduff soils contain more than 20 percent clay. Coyanosa soils formed from sandstone and contain less than 1 percent organic matter.

GEOGRAPHIC SETTING: Lampshire soils are on hills and mountains at elevations of 2,500 to 5,800 feet (762 to 1,768 meters). These soils formed in slope alluvium, residuum, and colluvium from basalt, tuff, andesite, rhyolite, dacite, granite and schist. Slopes range from 0 to 90 percent. The mean annual precipitation is 12 to 16 inches (305 to 406 mm). The mean annual air temperature is 57 to 70 degrees F (14 to 21 degrees C). The frost-free period is 170 to 250 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Caralampi, Chiricahua, Graham and Signal soils. Caralampi and Signal soils are very deep. Chiricahua and Graham soils have a fine-textured argillic horizon.

DRAINAGE AND PERMEABILITY: Well drained; medium to high runoff; moderate or moderately rapid permeability.

USE AND VEGETATION: Lampshire soils are used for livestock grazing and wildlife habitat. Vegetation is sideoats, sprucetop, hairy and slender gramas, three-awn, canebeardgrass, plains lovegrass, bristlegrass, tanglehead, curly mesquite, black grama, ocotillo, whitethorn, range ratany, mimosa, catclaw, agave, beargrass, sotol, barrel cacti, palo verde and desert hackberry.

DISTRIBUTION AND EXTENT: Southern and Central Arizona, and West Texas. This series is extensive. This soil occurs in LRR-D, MLRAs 38, 41, and 42.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona

SERIES ESTABLISHED: Santa Cruz County Area, Arizona; 1971.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from 0 to 8 inches (0 to 20 cm)(A horizon)
Lithic contact - the boundary at 8 inches (20 cm) (2R horizon)

Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, 12th Edition, 2010.

Updated competing series section 3/17/08, CEM
Revised for the correlation of AZ661, 2/2009, WWJ
Revised for the correlation of Graham County, AZ, Southwestern Part; March, 2011, WWJ
Revised for the correlation of Hudspeth County, Texas (Main Part) and Culberson County, Texas (Main Part); July, 2012, NMS
Revised for the correlation the SDJR - MLRA 38 - Pantak-Rock outcrop-Lampshire complex, 5 to 60 percent slopes project, September 2013, LJG2

---

National Cooperative Soil Survey
U.S.A.