LOCATION HINTON OREstablished Series
TAXONOMIC CLASS: Coarse-loamy over sandy or sandy-skeletal, mixed, superactive, nonacid, mesic Duric Torriorthents
TYPICAL PEDON: Hinton gravelly loamy sand--rangeland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 1 inch; dark grayish brown (10YR 4/2) gravelly loamy sand, very dark grayish brown (10YR 3/2) moist; single grain; loose, nonsticky and nonplastic; 10 percent fine gravel and 10 percent coarse gravel; 2 percent sand-size pumiceous ash grains; moderately alkaline (pH 8.2); gradual smooth boundary. (1 to 9 inches thick)
A2--1 to 12 inches; grayish brown (10YR 5/2) loamy sand, dark brown (10YR 3/3) moist; moderate thin and thick platy structure; slightly hard, friable, nonsticky and nonplastic; common very fine, common fine, common medium, and few coarse roots; many fine tubular pores; 5 percent fine gravel and 5 percent coarse gravel; moderately alkaline (pH 8.2); abrupt smooth boundary. (2 to 12 inches thick)
2Bkq--12 to 18 inches; pale brown (10YR 6/3) gravelly loam, dark brown (7.5YR 3/4) moist; massive; extremely hard, firm and brittle, slightly sticky and nonplastic; 10 percent fine gravel and 5 percent coarse gravel; slightly effervescent; secondary carbonates segregated in few fine filaments; neutral (pH 7.0); abrupt smooth boundary. (6 to 15 inches thick)
3Ck--18 to 24 inches; gray (10YR 6/1) extremely gravelly sand, dark gray (10YR 4/1) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; 50 percent fine gravel, 35 percent coarse gravel, and 2 percent cobbles; violently effervescent; neutral (pH 7.0); clear wavy boundary. (2 to 12 inches thick)
4Cq--24 to 28 inches; light brownish gray (10YR 6/2) sand, brown (10YR 5/3) moist; massive; hard, firm and brittle, slightly sticky and nonplastic; 5 percent fine gravel and 5 percent coarse gravel; slightly alkaline (pH 7.4); abrupt smooth boundary. (2 to 8 inches thick)
5C1--28 to 32 inches; pale brown (10YR 6/3) extremely gravelly sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; slightly effervescent; 55 percent fine gravel and 10 percent coarse gravel; moderately alkaline (pH 8.4); gradual wavy boundary. (3 to 6 inches thick)
5C2--32 to 40 inches; light gray (10YR 7/2) extremely gravelly sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; 30 percent fine gravel, 30 percent coarse gravel, and 2 percent cobbles; moderately alkaline (pH 8.4); abrupt smooth boundary. (0 to 8 inches thick)
5C'q--40 to 43 inches; pale brown (10YR 6/3) gravelly sand, brown (10YR 4/3) moist; massive; hard, firm and brittle, nonsticky and nonplastic; slightly effervescent; 15 percent fine gravel and 10 percent coarse gravel; moderately alkaline (pH 8.4); gradual smooth boundary. (2 to 20 inches thick)
5C'--43 to 60 inches; light gray (10YR 7/2) extremely gravelly sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; violently effervescent; 30 percent fine gravel, 30 percent coarse gravel, and 2 percent cobbles; moderately alkaline (pH 8.4).
TYPE LOCATION: Lake County, Oregon; north of the Upper Chewaucan Marsh and about 4.5 miles northeast of Paisley; in the SE 1/4 of the SW 1/4 of the NE 1/4 of section 4, T. 33 S., R. 19 E.; USGS Coglan Buttes 7.5 minute topographic quadrangle.
RANGE IN CHARACTERISTICS:
Soil moisture - Usually moist in some part during winter and spring, dry during summer and fall; The soils are dry for more than half the time when soil temperature is greater than 41 degrees F. The soil temperature is above 41 degrees F from about March 15 to about November 15; aridic (torric) moisture regime that borders on xeric.
Mean annual soil temperature - 49 to 51 degrees F.
Ochric epipedon thickness - 3 to 12 inches.
Depth to horizons with firm consistence and brittle manner of failure - 10 to 20 inches.
Depth to strongly contrasting sandy-skeletal materials - 16 to 26 inches.
Depth to bedrock - greater than 60 inches.
Particle-size control section - Clay content: Averages 6 to 14 percent in the upper part and 2 to 10 percent in the contrasting lower part; Sand content: 70 to 90 percent; Rock fragments: Averages 15 to 25 percent in the upper part and 35 to 75 percent in the contrasting lower part, mainly gravel. Lithology of fragments are volcanic rocks such as basalt or tuff.
A horizons - Value: 3 or 4 moist, 4 through 7 dry.
Chroma: 2 or 3 moist.
2Bkq horizon - Clay content: 7 to 15 percent.
Rock fragments: 15 to 25 percent.
Consistence: Very hard or extremely hard dry, firm or very firm and brittle moist.
Reaction: Neutral or slightly alkaline.
Calcium carbonate equivalent: 1 to 3 percent.
C horizons - Hue: 10YR or 7.5YR.
Value: 5 through 7 dry, 3 through 5 moist.
Chroma: 1 through 3 dry, 1 through 4 moist.
Texture: Stratified extremely gravelly sand and very gravelly sand with thin strata of sand or gravelly sand.
Clay content: 2 to 10 percent.
Rock fragments: 35 to 75 percent.
Consistence: Firm and brittle moist in horizons with silica accumulation.
Reaction: Neutral through moderately alkaline.
Effervescence: Noneffervescent through violently effervescent.
Calcium carbonate equivalent: 0 to 3 percent.
COMPETING SERIES: There are currently no other series in this family.
GEOGRAPHIC SETTING: Hinton soils are on lake terraces. These soils formed in eolian sands over stratified lacustrine (beach) deposits. Slopes are 0 to 5 percent. Elevations range from 4,200 to 4,800 feet. The climate is semiarid and characterized by cool, moist winters and warm, dry summers. The mean annual precipitation is 8 to 10 inches, the mean annual temperature is 47 to 49 degrees F., and the frost-free period is 90 to 110 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the McConnel and Zorravista soils. These soils do not have a horizon within 40 inches of the soil surface that is firm when moist and has a brittle manner of failure. Zorravista soils are sandy and occur on adjacent dunes.
DRAINAGE AND PERMEABILITY: Well drained; medium surface runoff; moderately slow permeability in horizons with a brittle manner of failure.
USE AND VEGETATION: Hinton soils are used for livestock grazing and wildlife habitat. The potential native vegetation is Indian ricegrass, Wyoming big sagebrush, Thurber's needlegrass, and needleandthread.
DISTRIBUTION AND EXTENT: South-central Oregon. These soils are not extensive with about 1,200 acres of the series mapped to date. MLRA 23.
MLRA OFFICE RESPONSIBLE: Reno, Nevada.
SERIES ESTABLISHED: Lake County (Southern Part), Oregon, 1991.
REMARKS: This revision of May 2003 updates the taxonomic class from Coarse-loamy over sandy or sandy-skeletal, mixed, superactive, mesic Durinodic Xeric Haplocambids and updates horizon designations.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 12 inches (A1 and A2 horizons).
Duric feature and identifiable secondary carbonates - The zone from 12 to 18 inches (2Bkq horizon).
Major lithologic discontinuity - The abrupt change to sandy-skeletal material at 18 inches (3Ck, 4Cq, 5C1, and 5C2 horizons).
Particle-size control section - The zone from 10 to 40 inches (2Bkq, 3Ck, 4Cq, 5C1, and 5C2 horizons and part of the A2 horizon).
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data. Property data in NASIS validates the superactive activity class.