LOCATION SENCHERT UTEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Pachic Argicryolls
0--3 inches to 0; somewhat decomposed leaves and twigs.
A--0 to 4 inches; very dark grayish brown (10YR 3/2) loam, very dark brown (10YR 2/2) moist; moderate medium granular structure; soft, very friable; few fine and very fine roots; neutral (pH 7.2); abrupt smooth boundary. (2 to 11 inches thick)
Bt1--4 to 9 inches; brown (10YR 4/3) loam, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; few fine medium and coarse roots; few very fine and fine pores; few thin clay films on faces of peds and in pores; neutral (pH 7.2); clear smooth boundary. (4 to 16 inches thick)
Bt2--9 to 16 inches; brown (10YR 5/3) loam, very dark grayish brown (10YR 3/2) moist; moderate medium subangular blocky structure; very hard, firm, slightly sticky and slightly plastic; few very fine, fine and medium roots; few very fine and fine pores; common, moderately thick clay films on faces of peds and in pores; mildly alkaline (pH 7.6); clear smooth boundary. (0 to 16 inches thick)
Bt3--16 to 35 inches; brown (10YR 5/3) clay loam, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; hard, firm, sticky and plastic; few very fine, fine and medium roots; few very fine and fine pores; few thin clay films on faces of peds and in pores; mildly alkaline (pH 7.6); abrupt smooth boundary. (0 to 19 inches thick)
R--35 inches; calcareous sandstone.
TYPE LOCATION: Carbon County, Utah, about 10 miles north and 2 miles west of East Carbon City; about 2,700 feet south and 1,000 feet east of the NW corner of sec. 4., T. 16 S., R. 16 E.
RANGE IN CHATACTERISTICS: The mollic epipedon and the solum are 16 to 35 inches thick. Depth to bedrock is 20 to 40 inches. Mean annual soil temperature ranges from 38 to 40 degrees F. The mean summer soil temperature is 44 to 47 degrees F.
The A horizon has value of 3 through 5 dry, 2 or 3 moist and chroma of 2 or 3. Clay content is 10 to 24 percent.
The Bt horizon has value of 4 or 5 dry and chroma of 2 or 3. Texture is loam or clay loam. Rock fragment content is 0 to 15 percent, which is mostly pebbles. Clay content is 18 to 35 percent. Reaction is neutral to mildly alkaline.
The C horizon where present is clay loam or silty clay.
COMPETING SERIES: These are Bachus, Benteen, Cambern, Clayburn, Decross, Demast, Dranyon, Echemoor, Gordo, Harmehl, Stubbs, Thulepah, and Winu series. Benteen soils have 20 to 40 percent limestone fragments in the lower profile. Cambern soils contain ash and tuff in the profile. Clayburn, Decross, Demast, Dranyon, Gordo, Thulepah soils lack bedrock within depths of 40 inches. Echemoor and Stubbs soils have paralithic contacts at depths of 20 to 40 inches. Harmehl and Winu soils have 15 to 35 percent rock fragments in the argillic horizon. Bachus soils are medium acid or slightly acid.
GEOGRAPHIC SETTING: Senchert soils are on mountainsides, ridges, plateaus and benches. Slopes are 1 to 50 percent. The soils formed in alluvium and colluvium from sandstone, shale, and siltstone. The elevation is 7,200 to 10,100 feet. The mean annual temperature is 36 to 38 degrees F. The average annual precipitation is 20 to 30 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are Beenon, Toze and Trag soils. Beenon and Trag soils are associated with Senchert at the lower elevation and have mean annual temperature of 38 to 42 degrees F. Beenon soils are shallow and Trag soils are deep. Troze soils lack argillic horizon and have calcic horizon.
DRAINAGE AND PERMEABILITY: Well drained; runoff is slow or medium; moderate permeability.
USE AND VEGETATION: Rangeland and wildlife habitat. Some areas have been used for woodland. Present vegetation is Douglas-fir, Englemann spruce, white fir, quaking aspen, mountain big sagebrush, snowberry, and Thurber fescue.
DISTRIBUTION AND EXTENT: The Senchert soils are moderately extensive. They are in the high mountain areas of Carbon County, Utah.
MLRA OFFICE RESPONSIBLE: Lakewood, Colorado
SERIES ESTABLISHED: Carbon County, Utah, 1982 The name of this series is coined.
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