LOCATION MARKET IDEstablished Series
TAXONOMIC CLASS: Fine, smectitic, frigid Vertic Haploxerepts
TYPICAL PEDON: Market clay, cultivated. (Colors are for dry soil unless otherwise noted)
Ap--0 to 8 inches; gray (2.5Y 6/0) clay, dark gray (10YR 4/1) moist; strong fine granular structure; extremely hard, extremely firm, very sticky and very plastic; few very fine and fine roots; many very fine and fine interstitial pores; mildly alkaline (pH 7.6); abrupt smooth boundary. (6 to 10 inches thick)
C1--8 to 28 inches; gray (2.5Y 6/0) clay, gray (10YR 5/1) moist; weak medium and thick platy that parts to moderate fine and medium angular blocky structure; extremely hard, extremely firm, very sticky and very plastic; few very fine and fine roots; common very fine and fine tubular pores; mildly alkaline (pH 7.8); abrupt irregular boundary. (7 to 20 inches thick)
IIC2--28 to 48 inches; light gray (5Y 7/2) silty clay loam, olive gray (5Y 5/2) moist; moderate thin platy that parts to moderate fine granular structure; hard, friable, very sticky and plastic; few very fine and fine roots; many very fine and fine tubular pores; slightly calcareous in about 40 percent of matrix; moderately alkaline (pH 8.0); abrupt broken boundary. (0 to 23 inches thick)
IIIC3--48 to 54 inches; light gray (10YR 7/1) silt, dark gray (2.5Y 4/0) moist; massive; slightly hard, very friable; few very fine and fine roots; many very fine and fine tubular pores; moderately alkaline (pH 8.0); abrupt wavy boundary. (0 to 8 inches thick)
IVC4--54 to 60 inches; light gray (10YR 7/1) silty clay, dark grayish brown (10YR 4/2) moist; strong thin platy structure that parts to moderate very fine angular blocks; hard, firm, very sticky and plastic; few very fine and fine roots; common fine prominent mottles; moderately alkaline (pH 8.0). (0 to 17 inches thick)
TYPE LOCATION: Jefferson County, Idaho; about .1 mile northwest of the SE corner of sec. 36, T.6N.,
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 42 degrees to 46 degrees F., and the mean summer soil temperature at a depth of 20 inches is about 66 degrees F. This soil is usually moist in all parts of the moisture control for at least 45 consecutive days in the spring, and is usually dry in late summer and autumn.
The Ap horizon has value of 3 through 5 moist, and chroma of 1 or 2. It typically has granular primary structure but has very fine and fine subangular blocky structure in some pedons. The C horizon has value of 6 through 8 dry, 3 through 6 moist and chroma of 0 through 2. Mottles are 30 to 60 inches deep.
COMPETING SERIES: This is the Pattani (T) series. Pattani soils have bedrock at depths of 20 to 40 inches.
GEOGRAPHIC SETTING: The Market soils are in playas at elevations of about 4,800 feet. Slopes are less than 1 percent. The soils formed in clayey and silty lake sediments. The semiarid climate has an average frost-free period of 100 to 115 days and a mean annual precipitation of 8 to 11 inches. Maximum precipitation falls in May and June.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Hovey and Levelton series. Hovey soils are poorly drained. Levelton soils are very poorly drained.
DRAINAGE AND PERMEABILITY: Well drained; ponded, slow permeability.
USE AND VEGETATION: Used for irrigated hay, small grains and pasture.
DISTRIBUTION AND EXTENT: Southeastern Idaho. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Jefferson County, Idaho, 1975.
OSED scanned by SSQA. Last revised by state on 2/75.