LOCATION HINTON                  OR

Established Series
Rev. RJK-TDT-JVC-JBF
03/2011

HINTON SERIES

The Hinton series consists of very deep, well drained soils that formed in eolian sands over stratified lacustrine deposits. Hinton soils are on lake terraces. Slopes are 0 to 5 percent. The mean annual precipitation is about 230 mm and the mean annual temperature is about 9 degrees C.

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 3 cm; dark grayish brown (10YR 4/2) gravelly loamy sand, very dark grayish brown (10YR 3/2) moist; single grain; loose, nonsticky and nonplastic; common very fine, fine and medium, and few coarse roots; many fine tubular pores; 10 percent fine gravel and 10 percent coarse gravel; 2 percent sand-size pumiceous ash grains; moderately alkaline (pH 8.2); gradual smooth boundary. (3 to 23 cm thick)

A2--3 to 30 cm; grayish brown (10YR 5/2) loamy sand, dark brown (10YR 3/3) moist; moderate thick platy parting to moderate thin 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. (5 to 30 cm thick)

2Bkq--30 to 46 cm; pale brown (10YR 6/3) gravelly loam, dark brown (7.5YR 3/4) moist; massive; extremely hard, firm and brittle, slightly sticky and nonplastic;few very fine roots; many very fine interstitial pores; 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. (15 to 38 cm thick)

3Ck--46 to 61 cm; gray (10YR 6/1) extremely gravelly sand, dark gray (10YR 4/1) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; few very fine interstitial pores; 50 percent fine gravel, 35 percent coarse gravel, and 2 percent cobbles; violently effervescent; secondary carbonates segregated in few fine filaments; neutral (pH 7.0); clear wavy boundary. (5 to 30 cm thick)

4Cq--61 to 71 cm; light brownish gray (10YR 6/2) sand, brown (10YR 5/3) moist; massive; hard, firm and brittle, slightly sticky and nonplastic; few very fine roots; many very fine interstitial pores; 5 percent fine gravel and 5 percent coarse gravel; slightly alkaline (pH 7.4); abrupt smooth boundary. (5 to 20 cm thick)

5C1--71 to 81 cm; pale brown (10YR 6/3) extremely gravelly sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; many very fine interstitial pores; slightly effervescent; 55 percent fine gravel and 10 percent coarse gravel; moderately alkaline (pH 8.4); gradual wavy boundary. (8 to 15 cm thick)

5C2--81 to 102 cm; light gray (10YR 7/2) extremely gravelly sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; many very fine interstitial pores; 30 percent fine gravel, 30 percent coarse gravel, and 2 percent cobbles; moderately alkaline (pH 8.4); abrupt smooth boundary. (0 to 20 cm thick)

5C'q--102 to 109 cm; pale brown (10YR 6/3) gravelly sand, brown (10YR 4/3) moist; massive; hard, firm and brittle, nonsticky and nonplastic; few very fine roots; many very fine interstitial pores; slightly effervescent; 15 percent fine gravel and 10 percent coarse gravel; moderately alkaline (pH 8.4); gradual smooth boundary. (5 to 50 cm thick)

5C'--109 to 152 cm; light gray (10YR 7/2) extremely gravelly sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; many very fine interstitial pores; 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; latitude 42 degrees 44 minutes 25 seconds N and longitude 120 degrees 28 minutes 51 seconds W; NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually moist in some part during winter and spring, dry during summer and fall;; aridic (torric) moisture regime that borders on xeric.
Mean annual soil temperature: 9 to 11 degrees C.
Depth to horizons with firm consistence and brittle manner of failure: 25 to 50 cm.
Depth to strongly contrasting sandy-skeletal materials: 40 to 66 cm.
Depth to bedrock: Greater than 150 cm..

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.
Soil reaction: Slightly alkaline or moderately alkaline.

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 to moderately alkaline.
Calcium carbonate equivalent: 1 to 3 percent.
Salinity (EC): 0 to 2 mmhos/cm.

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.
Salinity (EC): 0 to 2 mmhos/cm .

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 1,280 to 1,465 meters. The climate is semiarid and characterized by cool, moist winters and warm, dry summers. The mean annual precipitation is 200 to 250 mm, the mean annual temperature is 8 to 9 degrees C, and the frost-free period is 80 to 110 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Mcconnel and Zorravista soils. These soils do not have a horizon within 100 cm 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 SATURATED HYDRAULIC CONDUCTIVITY: Well drained; medium surface runoff; moderately high saturated hydraulic conductivity.

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 SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California.

SERIES ESTABLISHED: Lake County (Southern Part), Oregon, 1991.

REMARKS: The 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 18 cm (A1 and part of the A2 horizons).
Duric feature and identifiable secondary carbonates - The zone from 30 to 46 cm (2Bkq horizon).
Major lithologic discontinuity - The abrupt change to sandy-skeletal material at 46 cm (3Ck, 4Cq, 5C1, and 5C2 horizons).
Particle-size control section - The zone from 25 to 100 cm (2Bkq, 3Ck, 4Cq, 5C1, and 5C2 horizons and part of the A2 horizon).

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National Cooperative Soil Survey
U.S.A.