LOCATION MARYRUSSELL AZ
Tentative Series
Rev. JMH/HAH/NMS
05/2021
MARYRUSSELL SERIES
The Maryrussell series consists of deep, well drained soils that formed in alluvium derived from mixed sedimentary and igneous mineralogy. Maryrussell soils are on paleoterraces and have slopes of 0 to 3 percent. The mean annual precipitation is about 17 inches, and the mean annual air temperature is about 51 degrees F. Maryrussell soils form in a plateau climate.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Aridic Haplustalfs
TYPICAL PEDON: Maryrussell gravelly loam - rangeland. (Colors are for dry soil unless otherwise noted.)
E--0 to 3 inches (0 to 8 cm); reddish gray (5YR 5/2) gravelly loam, dark reddish brown (5YR 3/2), moist; 22 percent clay; weak medium subangular blocky parts to strong fine granular structure; soft, very friable, slightly sticky, slightly plastic; many very fine roots throughout and many fine roots throughout; many very fine dendritic tubular pores; 15 percent, nonflat, rounded, indurated mixed gravels; noneffervescent; slightly alkaline, pH 7.6; clear smooth boundary.
Bt1--3 to 8.5 inches (8 to 22 cm); dark reddish gray (5YR 4/2) gravelly clay loam, reddish brown (5YR 4/3), moist; 28 percent clay; moderate medium subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; common very fine roots throughout; common very fine dendritic tubular and common fine dendritic tubular pores; 50 percent distinct clay films on all faces of peds; 20 percent, nonflat, rounded, indurated mixed gravels; noneffervescent; slightly alkaline, pH 7.8; clear smooth boundary.
Bt2--8.5 to 23.5 inches (22 to 60 cm); reddish brown (5YR 4/3) gravelly clay loam, reddish brown (5YR 4/3), moist; 33 percent clay; strong fine angular blocky structure; hard, firm, very sticky, moderately plastic; common very fine roots throughout; few very fine dendritic tubular and few fine dendritic tubular pores; 90 percent prominent clay films on all faces of peds; 20 percent, nonflat, rounded, indurated mixed gravels; noneffervescent; moderately alkaline, pH 8.0; gradual smooth boundary.
C1--23.5 to 41.5 inches (60 to 106 cm); reddish gray (5YR 5/2) loam, dark reddish gray (5YR 4/2), moist; 26 percent clay; weak fine subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; few very fine roots throughout; 5 percent, nonflat, rounded, indurated mixed gravels; very slightly effervescent; moderately alkaline, pH 8.0; gradual smooth boundary.
C2--41.5 to 51 inches (106 to 130 cm); reddish brown (5YR 5/3) gravelly loam, reddish brown (5YR 4/3), moist; 20 percent clay; massive; slightly hard, friable, slightly sticky, slightly plastic; few very fine roots throughout; 30 percent, nonflat, subangular, indurated mixed gravels; very slightly effervescent; moderately alkaline, pH 8.4; abrupt smooth boundary.
R--51 to 61 inches (130 to 155 cm) bedrock.
TYPE LOCATION: Coconino County, Arizona;
Geographic Coordinate System (Universal Transverse Mercator): 419,233 meters E, 3941,927 meters N, zone 12
Geographic Coordinate System (Latitude/Longitude): 35 37' 4.17'' north, 111 53' 30.60'' west
RANGE IN CHARACTERISTICS:
Depth to bedrock: Over 40 inches
Soil moisture: Intermittently moist in some part of the SMCS from July to September and December to February. Aridic ustic moisture regime.
Soil temperature: 50 to 55 degrees F.
Rock fragments: 15 to 30 percent
E and A horizons
Hue: 5YR or 7.5YR
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 2 or 3, dry or moist
Texture: loam
Reaction: slightly or moderately alkaline
Bt horizons
Hue: 5YR or 7.5YR
Value: 4 or 5 dry, 3 or 4 moist
Chroma: 2 or 3, dry or moist
Texture: loam, clay loam
Reaction: moderately alkaline
Calcium carbonate equivalent: 0 to 5 percent
C horizons
Hue: 5YR or 7.5YR
Value: 5 dry, 4 moist
Chroma: 2 or 3, dry or moist
Texture: loam, clay loam
Reaction: moderately alkaline
Calcium carbonate equivalent: 0 to 5 percent
COMPETING SERIES: These are the
Arnor,
Arwite,
Augustine,
Bigbow,
Bosonoak,
Carri,
Celacy,
Celavar,
Dalhart,
Deekay,
Dermala,
Elwop,
Evpark,
Flugle,
Fort Collins,
Gateson,
Iwela,
Lykorly,
Navajita,
Nyjack,
Oldwolf,
Olnest,
Orlie,
Parkelei,
Pinitos,
Rauzi,
Ribera,
Rockybutte,
Stoneham,
Toluca, and
Wagonhound soil series'.
Arnor,
Arwite,
Augustine,
Deekay,
Dermala,
Elwop,
Fort Collins,
Gateson,
Oldwolf,
Olnest,
Nyjack,
Rauzi,
Rockybutte,
Stoneham,
Toluca, and
Wagonhound soils form in interior mountain climates that have a colder mean annual temperature.
Bigbow, and
Dalhart soils form in prairie climates that have a warmer mean annual temperature.
Bosonoak,
Carri,
Celacy,
Celavar,
Evpark,
Flugle, and
Lykorly soils do not have gravelly and very gravelly textures.
Iwela soils form in colluvium from landslides.
GEOGRAPHIC SETTING: Maryrussell soils are at elevations of 5,900 to 6,800 feet on hills. Slopes are 0 to 3 percent. The soils formed in alluvium derived from mixed sedimentary and basalt. The mean annual air temperature ranges from 49 to 54 degrees F. The average annual precipitation ranges from 14 to 18 inches and occurs as thunderstorms in July, August and September and as rain and snow in the winter. The frost-free period ranges from 130 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: Maryrussell soils appear in an alluvial setting similar to
Disterheff soils, but Disterheff soils have more clay in all horizons.
Ashfork,
Dogpaws, and
Cross soils are derived from surrounding basalt lava flows.
DRAINAGE AND PERMEABILITY: Well drained; slow to medium runoff; slow permeability.
USE AND VEGETATION: Used primarily for livestock grazing. Vegetation is mainly blue grama, black grama, broom snakeweed, cholla, green rabbitbrush, low woollygrass, oneseed juniper, pricklypear.
DISTRIBUTION AND EXTENT: Northern Arizona. The soils are moderately extensive. MLRA is 35.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Coconino County Area, Colton Crater Project, Arizona, 2020.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric Epipedon- 0 to 3 inches (0 to 8 cm).
Argillic Horizon- 3 to 23.5 inches (8 to 60 cm).
Classified according to Keys to Soil Taxonomy Twelfth Edition, 2014
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National Cooperative Soil Survey
U.S.A.