Rockly soil and landscape
Soil profile: A soil profile of the shallow Rockly soils. (Soil Survey of Spokane County, Washington; by Scott H. Bare, Natural Resources Conservation Service)
Landscape: Typical area of Alecanyon-Rockly complex, 0 to 15 percent slopes. The Rockly soil is in foreground under rangeland ecological site R009XY301WA. Stiff sagebrush (Artemisia rigida) is the dominant shrub on the Rockly soil. The Alecanyon soil is between convex areas of Rockly soils and supports rangeland ecological site R009XY202WA.
Landscape--Mountains, hills, plateaus, canyonlands
Landform--mountain slopes, hillslopes, ridges, structural benches, canyons
Slope--0 to 120 percent
Parent material--residuum and colluvium derived from basalt with an influence of loess and volcanic ash
Mean annual precipitation--about 460 mm
Mean annual air temperature--about 9 degrees C
Depth class--shallow, very shallow
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Lithic Haploxerolls
Soil moisture--usually moist, but dry 60 to 80 consecutive days in all parts between depths of 10 and 30 cm or to a lithic contact
Mean annual soil temperature at lithic contact--8 to 12 degrees C
Depth to bedrock--10 to 30 cm
Thickness of mollic epipedon--10 to 30 cm
Reaction--6.1 to 7.3
Hue--10YR to 5YR
Particle-size control section--loam, silt loam, clay loam, or silty clay loam; about 10 to 30 percent clay; 35 to 75 percent rock fragments consisting of gravel, cobbles, or stones
Percentage of surface covered with stones or cobbles--0 to 15 percent
Faint clay films--lining pores in thin layer above bedrock in some pedons
USE AND VEGETATION:
Use--livestock grazing, wildlife habitat, water supply
Native vegetation--mainly stiff sagebrush, lomatium, bluebunch wheatgrass, and Sandberg bluegrass.
DISTRIBUTION AND EXTENT: North-central Oregon, eastern and central Washington, and west-central Idaho; MLRAs 8, 9, 10, and 43C; large extent
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/washington/spo...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/R/ROCKLY.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#rockly
Rockly soil and landscape
Soil profile: A soil profile of the shallow Rockly soils. (Soil Survey of Spokane County, Washington; by Scott H. Bare, Natural Resources Conservation Service)
Landscape: Typical area of Alecanyon-Rockly complex, 0 to 15 percent slopes. The Rockly soil is in foreground under rangeland ecological site R009XY301WA. Stiff sagebrush (Artemisia rigida) is the dominant shrub on the Rockly soil. The Alecanyon soil is between convex areas of Rockly soils and supports rangeland ecological site R009XY202WA.
Landscape--Mountains, hills, plateaus, canyonlands
Landform--mountain slopes, hillslopes, ridges, structural benches, canyons
Slope--0 to 120 percent
Parent material--residuum and colluvium derived from basalt with an influence of loess and volcanic ash
Mean annual precipitation--about 460 mm
Mean annual air temperature--about 9 degrees C
Depth class--shallow, very shallow
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Lithic Haploxerolls
Soil moisture--usually moist, but dry 60 to 80 consecutive days in all parts between depths of 10 and 30 cm or to a lithic contact
Mean annual soil temperature at lithic contact--8 to 12 degrees C
Depth to bedrock--10 to 30 cm
Thickness of mollic epipedon--10 to 30 cm
Reaction--6.1 to 7.3
Hue--10YR to 5YR
Particle-size control section--loam, silt loam, clay loam, or silty clay loam; about 10 to 30 percent clay; 35 to 75 percent rock fragments consisting of gravel, cobbles, or stones
Percentage of surface covered with stones or cobbles--0 to 15 percent
Faint clay films--lining pores in thin layer above bedrock in some pedons
USE AND VEGETATION:
Use--livestock grazing, wildlife habitat, water supply
Native vegetation--mainly stiff sagebrush, lomatium, bluebunch wheatgrass, and Sandberg bluegrass.
DISTRIBUTION AND EXTENT: North-central Oregon, eastern and central Washington, and west-central Idaho; MLRAs 8, 9, 10, and 43C; large extent
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/washington/spo...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/R/ROCKLY.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#rockly