LOCATION IRELAND                 ID

Established Series
Rev. FRK/RG/CLM
08/2014

IRELAND SERIES

The Ireland series consists of moderately deep, well drained soils formed in alluvium, colluvium, and residuum from limestone, dolomite, and sandstone that have been influenced by loess. Ireland soils are found on slopes of 8 to 70 percent on mountain slopes, hillslopes, and ridges. The mean annual air temperature is about 6 degrees C., and the mean annual precipitation is about 450 mm.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Calcic Haploxerolls

TYPICAL PEDON: Ireland very gravelly silt loam, rangeland. (Colors are for air-dry soil unless otherwise noted.)

A--0 to 20 cm; grayish brown (10YR 5/2) very gravelly silt loam, very dark grayish brown (10YR 3/2) moist; weak medium and fine subangular blocky structure parting to weak fine granular; slightly hard, very friable, slightly sticky and slightly plastic; many very fine, few fine, and medium roots; few very fine tubular and common very fine irregular pores; 25 percent gravel and 10 percent cobbles; slightly alkaline (pH 7.8); abrupt wavy boundary

ABk--20 to 41 cm; grayish brown (10YR 5/2) extremely cobbly silt loam, very dark grayish brown (10YR 3/2) moist; weak medium and fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and few fine, medium, and coarse roots; common very fine tubular and irregular pores; 10 percent gravel and 60 percent cobbles; common distinct calcium carbonate coats on bottom surfaces of rock fragments; slightly effervescent; moderately alkaline (pH 8.0); abrupt wavy boundary

Bk--41 to 71 cm; brown (10YR 5/3) extremely cobbly silt loam, brown (10YR 4/3) moist; weak fine and very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few fine, medium, and coarse roots; common very fine irregular pores; 10 percent gravel and 60 percent cobbles; common distinct calcium carbonate coats on bottom surfaces of rock fragments; strongly effervescent; moderately alkaline (pH 8.1); abrupt wavy boundary

R--71 cm; fractured limestone; many distinct carbonate coats on bedrock; soil material in fractures

TYPE LOCATION: Oneida County, Idaho; about 1.2 km north of Holbrook Summit on North Canyon Road; approximately 610 meters south and 31 meters west of the northeast corner of section 27, T. 14 S., R. 34 E.; USGS Ireland Springs 7.5 minute topographic quadrangle; 42 degrees, 10 minutes, 35 seconds north latitude and 112 degrees, 27 minutes, 32 seconds west longitude, NAD83

RANGE IN CHARACTERISTICS:
Mollic epipedon thickness - 25 to 50 cm
Depth to bedrock - 50 to 100 cm
Depth to secondary carbonates - 20 to 61 cm
Mean annual soil temperature - 6 to 8 degrees C (frigid temperature regime)

Particle-size control section
Rock fragments - 40 to 85 percent
Clay content - 14 to 22 percent

A horizon
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3 dry or moist
Texture - Silt loam or loam
Reaction - 6.6 to 7.8
Rock fragments - 15 to 45 percent gravel; 0 to 25 percent cobbles
Thickness - 20 to 30 cm

Bk horizons
Hue - 10YR or 7.5YR
Value - 5 to 7 dry, 3 to 5 moist
Chroma - 2 to 4 dry or moist
Texture - Silt loam or loam
Effervescence - Slightly to strongly effervescent in the upper part, strongly or violently effervescent in the lower part
Reaction - 7.6 to 8.4
Rock fragments - 40 to 85 percent total
Thickness - 30 to 76 cm

COMPETING SERIES:
Bailey - No lithic contact within 150 cm (very deep)
Buist - No lithic contact within 150 cm (very deep)
Conner - Have flagstones in the particle size control section
Conneridge - Have cambic horizons
Cooley - No lithic contact within 150 cm (very deep)
Dagan - No lithic contact within 100 cm (deep or very deep)
Hondoho - No lithic contact within 150 cm (very deep)
Jebo - Have cambic horizons
Niarada - No lithic contact within 150 cm (very deep)
Pedleford - Fragments in soil are basalt lithology
Tuckerdowns - No lithic contact within 150 cm (very deep)

GEOGRAPHIC SETTING:
Parent material - Alluvium, colluvium, and residuum from interbedded limestone, dolomite, and sandstone with some loess influence
Landscape - Mountains and foothills
Landform - Mountain slopes, hillslopes, ridges
Slope - 8 to 70 percent
Elevation - 1,580 to 2,440 meters
Climate - Warm, dry summers; cool, moist winters
Mean annual precipitation - 400 to 550 cm
Mean annual air temperature - 5 to 8 degrees C
Frost-free period - 60 to 90 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Burgi - No lithic contact within 150 cm (very deep); on mountain sides
Hymas - lithic contact at 25 to 50 cm; on ridge tops, shoulder slopes
Pavohroo - No lithic contact within 100 cm (deep or very deep); on mountain sides under Douglas-fir
Poleline - No lithic contact within 100 cm (deep); on mountainsides
Yago - No lithic contact within 150 cm (very deep); on mountain sides, fan remnants

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class - Well drained
Ksat - Moderately high or high

USE AND VEGETATION:
Use - Rangeland, watershed, and wildlife
Potential natural plant community - Mountain big sagebrush and bluebunch wheatgrass

DISTRIBUTION AND EXTENT: Mountains and foothills of southeastern Idaho; MLRA 13B; moderate extent

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Bannock County, Idaho, 1983

REMARKS:
Particle-size control section - 25 to 71 cm
Mollic epipedon - 0 to 41 cm
Calcic horizon - 41 to 71 cm
Lithic contact - 71 cm

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National Cooperative Soil Survey
U.S.A.