LOCATION CHINMOE                 UT

Tentative Series
Rev. KWC
07/2022

CHINMOE SERIES

The Chinmoe series consists of deep, well drained soils that formed in slope alluvium derived from mudstone, shale, and sandstone. Chinmoe soils are on homoclinal ridges, cuesta. Slopes range from 5 to 45 percent. Mean annual precipitation is about 381 millimeters (15 inches) and the mean annual temperature is about 8.9 degrees C (43 degrees F).

TAXONOMIC CLASS: Fine, mixed, superactive, mesic Aridic Haplustalfs

TYPICAL PEDON: Chinmoe clay loam - Rangeland; 20 percent slope at an elevation of 1931 meters (6372 feet). (Colors are for dry soil unless otherwise noted.)

A--0 to 2.5 inches (0 to 6 cm); reddish brown (5YR 5/4) gravelly loam, reddish brown (5YR 4/3), moist; 8 percent clay; moderate thin platy parts to moderate very fine granular structure; soft, very friable, nonsticky, nonplastic; many very fine roots; 20 percent gravel; noneffervescent; slightly acid, pH 6.4.

Bt1--2.5 to 6.5 inches (6 to 16 cm); dark reddish brown (2.5YR 3/3) loam, dark reddish brown (2.5YR 2.5/3), moist; 25 percent clay; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, moderately plastic; common very fine roots and fine roots; few distinct clay films; 5 percent gravel; noneffervescent; neutral, pH 6.6.

Bt2--6.5 to 15.5 inches (16 to 39 cm); dark reddish brown (2.5YR 2.5/4) clay, dark reddish brown (2.5YR 2.5/4), moist; 41 percent clay; strong medium angular blocky structure; hard, firm, moderately sticky, very plastic; common very fine roots and fine roots; few prominent clay films; 5 percent gravel; noneffervescent; neutral, pH 6.8.

Bt3--15.5 to 42 inches (39 to 107 cm); dark red (2.5YR 3/6) clay, dark red (2.5YR 3/6), moist; 40 percent clay; strong medium angular blocky structure; hard, firm, moderately sticky, very plastic; common medium roots and very fine roots and fine roots; few prominent clay films; 5 percent gravel; noneffervescent; neutral, pH 6.8.

TYPE LOCATION: Washington County, Utah; Zion National Park, Kolob Canyons section; 37.4415278 Latitude -113.1980528 Longitude; UTM 305550 easting 4146125 northing, WGS84.

RANGE IN CHARACTERISTICS:

Soil moisture: Aridic Ustic
Mean annual soil temperature: 8.3 to 14 degrees C (47 to 52 degrees F)
Mean annual precipitation: 350 to 406 millimeters (14 to 16 inches)
Mean annual air temperature: 7.2 to 10.6 degrees C (41 to 52 degrees F)
Depth to lithic contact: 90 to 140 centimeters (35 to 55 inches)
Depth to argillic horizon: 8 to 20 centimeters (3 to 8 inches)

A horizon:
Hue: 5YR, 7.5YR
Value: 4 or 5 dry, 2.5 to 4 moist
Chroma: 4 to 6 dry, 3 or 4 moist
Texture: clay loam, loam, fine sandy loam
Clay content: 7 to 30 percent
Rock fragments: 10 to 50 percent gravels
Calcium carbonate equivalent: 0 to 1 percent
Reaction: 6.4-6.8

Bt1 horizon:
Hue: 2.5YR, 5YR
Value: 3 or 4 dry, 2.5 or 3 moist
Chroma: 3 or 4 dry
Texture: sandy clay loam, loam
Clay content: 22 to 25 percent
Rock fragments: 5 to 25 percent gravels
Calcium carbonate equivalent: 0 to 1 percent
Reaction: 6.6-6.8

Bt2 horizon:
Value: 2.5 or 3 dry or moist
Chroma: 4 to 6 dry or moist
Texture: clay, clay loam
Clay content: 34 to 42 percent
Rock fragments: 5 to 10 percent gravels
Calcium carbonate equivalent: 0 to 1 percent
Reaction: 6.6-6.8

Bt3 horizon:
Chroma: 4 to 6 dry
Texture: clay, clay loam
Clay content: 30 to 42 percent
Rock fragments: 5 to 15 percent gravels
Calcium carbonate equivalent: 0 to 5 percent
Reaction: 6.8-7.6

COMPETING SERIES: Cueva(NM), Durango(CO), Erramouspe(NM), Fikel(NM), Hosta(NM), Montecito(NM), Nogal(NM), Ortiz(NM), Prater(CO), Tinian(NM), Wilmac(NM). Cueva and Fikel soils have visible carbonates. Durango soils have visible carbonates and are very deep. Hosta and Prater soils have visible carbonates, 10YR hues and are very deep. Erramouspe soils have 10YR hues and felsite parent material. Montecito, Tinian, and Wilmac soils have visible carbonates and 10YR hues. Nogal soils have visible carbonates, 10YR hues, and gypsiferous shale parent material. Ortiz soils have visible carbonates and granite, gneiss, and schist parent material.

GEOGRAPHIC SETTING:
Parent material: slope alluvium derived from mudstone, shale, sandstone
Landform: homoclinal ridges, cuestas
Slopes: 5 to 45 percent
Elevation: 1600 to 2000 meters (5280-6600 feet)
Mean annual temperature: 7.2 to 10.6 degrees C
Mean annual precipitation: 350 to 406 millimeters
Frost-free period: 120 to 150 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Tacan and Menefee series.

DRAINAGE AND PERMEABILITY: well drained, medium runoff, moderately slow permeability.

USE AND VEGETATION: Chinmoe soils are used for wildlife habitat and recreation. Vegetation includes pinyon pine, Utah juniper, Utah serviceberry, gambel oak, manzanita, muttongrass, big sagebrush.

DISTRIBUTION AND EXTENT: Washington County, Utah; LRR D, MLRA 35; Chinmoe soils are of limited extent in southern Utah.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Phoenix, Arizona

SERIES PROPOSED: Zion National Park, Utah, soil survey area, 2017.

REMARKS: Slope alluvium, eolian, and alluvium deposits from the Chinle and Moenave geologic formations.

Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 6 to 56 centimeters.
Argillic horizon: The zone from 6 to 100 centimeters.

Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Twelfth Edition, 2014

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National Cooperative Soil Survey
U.S.A.