LOCATION LINGSHIRE MT

Tentative Series
Rev. SPV/EMM
02/2011

LINGSHIRE SERIES

The Lingshire series consists of moderately deep, well drained soils formed in colluvium from mixed rock sources over shale residuum. They are on hills and mountain slopes. Slopes are 10 to 65 percent. The average annual precipitation is about 725 mm and the average annual temperature is about 3 degrees C.

TAXONOMIC CLASS: Fine, mixed, superactive Pachic Argicryolls

TYPICAL PEDON: Lingshire loam, forested, on a 30 percent north-facing slope at 2,131 meters elevation. (Colors are for dry soil unless otherwise noted).

Oi--0 to 2 cm; slightly decomposed pine needles, grasses, forbs, and shrub leaf stems, roots and duff material. (0 to 6 cm thick)

A--2 to 40 cm; very dark gray (10YR 3/1) loam, black (10YR 2/1) moist; moderate fine granular structure; slightly hard, friable, moderately sticky and moderately plastic; many very fine and fine and common medium and few coarse roots; many very fine, fine and common medium irregular pores; 5 percent channers and 5 percent gravel; moderately acid (pH 6.0); clear smooth boundary. (10 to 45 cm thick)

Bt1--40 to 62 cm; very dark gray (10YR 3/1) clay loam, black (10YR 2/1) moist; moderate medium subangular blocky structure; very hard, very firm, very sticky and very plastic; common very fine and fine and few medium and coarse roots; common very fine and fine irregular pores; 5 percent channers and 5 percent gravel; 15 percent prominent clay films on faces of peds; moderately acid (pH 6.0); gradual wavy boundary.

Bt2--62 to 92 cm; dark gray (2.5Y 4/1) parachannery clay, very dark gray (2.5Y 3/1) moist; strong medium and coarse subangular blocky structure; very hard, very firm, very sticky and very plastic; common fine and few medium and coarse roots; common fine irregular pores; 15 percent parachanners and 5 percent gravels; 60 percent prominent clay films on faces of peds; moderately acid (pH 6.0); gradual wavy boundary. (Combined thickness of Bt horizons is 30 to 60 cm thick)

Cr--92 to 152 cm; gray (2.5Y 5/1) semi consolidated shale; slightly acid (pH 6.2)

TYPE LOCATION: Meagher County Area, Montana; located about 1,500 feet west and 3,400 feet south of the northeast corner of section 9 T 13N., R 1E; B K Ranch topographic quadrangle; UTM 12T, 0453717E, 5192893N, NAD 83.

RANGE IN CHARACTERISTICS:
Mean annual soil temperature - 1 to 4 degrees C.
Moisture control section - between 10 and 30 cm
Mollic epipedon thickness - 40 to 100 cm
Depth to paralithic contact - 50 to 100 cm
Depth to argillic horizon - 20 to 45 cm

A horizon
Hue: 10YR or 2.5Y dry or moist
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 1 to 3, dry or moist
Texture: loam or silt loam
Clay content: 18 to 27 percent
Rock fragments: 5 to 15 percent - 5 to 10 channers, 0 to 10 percent gravel
Reaction: pH 5.8 to 7.0

Bt1 horizon
Hue: 10YR or 2.5Y dry or moist
Value: 3 to 5 dry; 2 to 4 moist
Chroma: 1 to 3, dry or moist
Texture: clay loam, silty clay loam, or clay
Clay content: 28 to 45 percent
Rock fragments: 5 to 15 percent - 5 to 10 channers, 0 to 10 percent gravel
Reaction: pH 5.8 to 7.0

Bt2 horizon
Hue: 10YR or 2.5Y dry or moist
Value: 3 to 5 dry; 2 to 4 moist
Chroma: 1 to 3 dry or moist
Texture: clay loam, silty clay loam, or clay
Clay content: 35 to 50 percent
Rock fragments: 5 to 25 percent - 5 to 25 percent parachanners, 0 to 10 percent gravel
Reaction: pH 5.8 to 7.0

COMPETING SERIES: These are the Cratermo, Hammersley, Teedown, and Tophat soils.

Cratermo (ID) - moderately deep to a lithic contact
Hammersley (OR) - deep to a paralithic deep
Teedown (CO) - very deep
Tophat (ID) - very deep

GEOGRAPHIC SETTING:
Landform - hills and mountain slopes.
Elevation - 2,000 to 2,500 meters
Slope - 10 to 60 percent
Parent material - colluvium from igneous and non-calcareous sedimentary rocks over shale residuum
Climate - long, cold winters; moist springs and cool summers
Mean annual precipitation - 635 to 1000 mm
Mean annual air temperature - 1 to 4 degrees C.
Frost free period - 30 to 50 days

GEOGRAPHICALLY ASSOCIATED SOILS: This is the Adel series. Adel soils are very deep, fine-loamy and pachic and occur in swales.

DRAINAGE AND PERMEABILITY: Well drained; high runoff; low permeability.

USE AND VEGETATION: Lingshire soils are used for forestry, rangeland and understory grazing. Native range vegetation is rough fescue, Idaho fescue, needlegrass, mountain brome, shrubby cinquefoil, and lupine. Forested areas are dominated by subalpine fir, lodgepole pine, Douglas-fir and Englemann spruce, with an understory of grouse whortleberry, huckleberry, menziesia, arnica, valerian, elk sedge, and pine grass.

DISTRIBUTION AND EXTENT: Lingshire soils are of small extent in central and western Montana. MLRA 43B.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Lewis and Clark County, 2010. Lingshire is named after the historic village of Lingshire in nearby Meagher County, Montana.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Mollic epipedon - The zone from 2 to 92 cm (A, Bt1, and Bt2).
Argillic horizon - The zone from 40 to 92 cm (Bt1, and Bt2).
Paralithic contact - at 92 cm (Cr).
Particle-size control section - the zone from 40 to 90 cm (Bt1 and part of the Bt2 horizon).

Lingshire soils have a cryic temperature regime and udic moisture regime.

National Cooperative Soil Survey
U.S.A.