LOCATION NORDIC UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Typic Palecryolls
Typical Pedon: Nordic gravelly loam, rangeland. (Colors are tor moist soil unless otherwise noted.)
o Ù inch to 0, matted, decaying leaves, Ùwigs, etc.
All--O to 6 inches, very dark grayish brown (lOYR 3/2) gravelly loam, dark grayish brown (lOYR 412) dry; weak fine granular structure; soft, very friable, nonsticky and slightly plastic; many fine and few medium and coarse roots; 20 percent gravel; slightly acid (pH 6.1); clear wavy houndary. (6 to 7 inches thick)
A12--6 to 15 inches, very dark grayish brown (lOYR 3/2) gravelly loam, dark grayish brown (lOYR 4/2) dry; weak nedium and coarse subangular blocky structure that parts to weak fine granular; soft, friable, slightly sticky and blightly plastic; commÙn fine and few medium and coarse rvots; 25 percent pebbles; slightly acid (pH 6.1); gradual irregular boundary. (9 to 13 inches thick)
A21--15 to 24 inches, dark yellowish brown (lOYR 4/4) gravelly loam, light yellowish brown (lOYR 6/4) dry; weak medium and coarse subangular blocky structure that parts to weak coarse granular; slightly hard, friable, slightly sticky and plastic; common fine and few medium roots; many fine and very fine pores; 35 percent pebbles; slightly acid (pH 6.1); gradual wavy boundary. (9 to 21 inches thick)
A22--24 to 40 inches, dark yellowish brown (lOYR 4/5) gravelly loam, light yellowish brown (lOYR 6/4) dry; weak medium and fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few fine and medium roots; many fine and very fine pores; 30 percent pebbles and 10 percent cobbles; slightly acid (pH 6.2); gradual wavy boundary. (O to 17 inches thick)
B21t-- 40 to 47 inches, strOng brown (7.5YR 5/6) gravelly clay loam, light yellowish brown (lOYR 6/4) dry weak fine and medium subangular blocky structure; hard, firm, slightly sticky and plastic; few fine rOOtS; many very fine and fine pores; 35 percent pebbles, 5 percent cobbles; slightly acid (pH 6.2); gradual irregular boundary. (7 to 16 inches thick)
B22t--47to 58 inches, strong brown (7.5YR 5/6) very gravelly clay loam, light yellowish brÙwn (lOYR 6/4) dry; weak fine and medium subangular blocky structure; hard, firm, slightly sticky and plastic; few fine roots, 40 percent pebbles, 20 percent cobbles, 5 percent stones; slightly acid (pH 6.1); clear wavy boundary. (O to more than 13 inches thick)
C--58 to 70 inches, brown (7.5YR 5/4) very cobbly loam, light yellowish brown (lOYR 6/4) dry; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few fine roots; 25 percent pebbles, 45 percent cobbles; slightly acid (pH 6.1).
Type Location: Weber County, Utah; near Nordic Valley ski lift; 170 feet west and 2,000 feet south of the Nl/4 corner of sec. 32, T.7N., R.lE.
Range in Characteristics: me mollic epipedon is 15 to 19 inches thick. Depth to the upper boundary of the B2t horizon ranges from 40 to 45 inches. The combined thickness of the Al, A2, and B2t horizons is 55 to more than 60 inches. me mean annual soil temperature at depth of 20 inches ranges from 45x to 47xF. The mean summer soil temperature ranges from 57x to 59xF. The soils are usually moist, but are dry for 30 to 45 consecutive days during the late summer. Rock fragments consist of angular pebbles, cobbles, and stones, and range from 20 to 25 percent in the Al horizon, 35 to 55 percent in the A2 horizon, and 50 to 65 percent in the B2t horizon. me control section (10 to 40 inches) ranges from 35 to 55 percent rock fragments.
The Al horizon has value of 3 or 4 dry, 2 or 3 moist, and chroma of 2 Or 3 dry and moist. It ranges from 15 to 19 inches thick.
The A2 horizon has hue of lOYR or 7.5YR, value of 6 or 7 dry, 4 or 5 moist, and chroma of 4 through 6 dry and moist. It ranges from gravelly or very gravelly clay loam to gravelly loam, and is 19 to 28 inches thick. The B2t horizon has hue of lOYR or 7.5YR, value of 4 or 5 moist, and chroma of 4 through 6 dry and Ùoist. It is gravelly or very gravelly clay loam with less than 35 percent clay. Structure is weak or moderate, fine to coarse, subangular blocky. Clay films are thin and range from few to many. Reaction is medium acid to slightly acid.
The C horizon has hue of lOYR or 7.5YR. It is very gravelly or very cobbly heavy loam.
Competing SeriesÙ These are the Loggert, Lucky Star, Norway Flat and Schuster series. Lvggert soils have very stony AÙB or B&A horizons, extremely stony sandy clay lÙam argillic horizvns and the combined thickness of the Al and A2 hvrizons is less than 20 inches. Lucky Star soils have AÙi3 horizons, and have hue vf SYR or redder in at least part of the argillic horizon. Norway Flat soils have AÙB hvrizons below a depth of 40 inches and have less than 18 percent clay in the argillic horizon. Schuster soils have hue of SYR or 2.5YR in the argillic horizons and the upper boundary of the argillic horizon i5 shallower than 40 inches.
Geographic Setting: Nordic soils are at elevaLions vf 5,200 to 7,000 feet. They vccur dominantly vn nvrth- and east-facing mountain glopes. Slvpe gradients are 30 to 60 percent. Parent materials are residuum and colluvium weathered from argillite, phyllite, and schist. The climate is humid, and the average annual precipitation ranges frvm 25 to 35 inches. The mean annual temperature is 43x Ùo 45xF. The mean summer temperature is 53x to SSxF., and the frost-free period ranges from 70 to 100 days.
Associated Soils: These are the Lamondi, Patio, and Yeates Hollow soils. Lamondi soils have mvllic epipedons more than 20 inches thick, and lack both A2 and argillic horizQns. Patio soils lack argillic hvrizQns and are 20 to 40 inches deep to bedrock. Yeates Hollow soils have clayey-skeletal argillic horizons, lack A2 horizons, and have mean summer soil temperature vf more than 59xF.
Drainage and PermeabilityÙ Well drained; medium runoff; moderately slow permeability.
Use and VegetationÙ These soils are used for watershed, range and wildlife habitat. The present native vegetation is maple and oak with an understory of fern, Oregon grape, larkspur, and blue wildrye.
Distribution and ExtentÙ Northern Utah. This series is inextensive.
Series EstablishedÙ !4organ Area, Weber County, Utah, 1974.
REMARKS: OSED scanned by NSSQA. Last revised by state on 11/74