LOCATION BACONCAMP OR
Established Series
Rev. JVC-JBF
11/2010
BACONCAMP SERIES
The Baconcamp series consists of moderately deep, well drained soils that formed in colluvium derived from basalt or andesite. Baconcamp soil are on mountains, hills, and canyons. Slopes are 3 to 80 percent. The mean annual precipitation is about 400 mm and the mean annual temperature is about 5 degrees C.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Pachic Haplocryolls
TYPICAL PEDON: Baconcamp very cobbly loam--on a 30 percent slope at an elevation of 2,320 meters--rangeland. (When described on July 17, 1982 the soil was moist throughout. Colors are for dry soil unless otherwise noted.)
A1--0 to 10 cm; very dark grayish brown (10YR 3/2) very cobbly loam, black (10YR 2/1) moist; moderate thin platy structure parting to weak fine granular; soft, very friable, slightly sticky and nonplastic; many very fine, fine and medium roots; many irregular and tubular pores; 20 percent gravel, 15 percent cobbles, and 5 percent stones; slightly acid (pH 6.4); gradual wavy boundary.
A2--10 to 51 cm; very dark grayish brown (10YR 3/2) gravelly loam, black (10YR 2/1) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine, fine and medium roots; many irregular and tubular pores; 15 percent gravel and 5 percent cobbles; slightly acid (pH 6.4); gradual wavy boundary.
A3--51 to 89 cm; dark grayish brown (10YR 4/2) very gravelly loam, very dark grayish brown (10YR 3/2) moist; massive; soft, very friable, slightly sticky and slightly plastic; common very fine, fine and medium roots; many irregular and tubular pores; 45 percent gravel and 5 percent cobbles; slightly acid (pH 6.4); abrupt irregular boundary. (Combined thickness of the A horizons is 50 to 100 cm.)
R--89 cm; fractured basalt.
TYPE LOCATION: Harney County, Oregon; in the Trout Creek Mountains about one quarter mile south of Big Trout Creek; approximately 700 feet south and 2,300 feet east of the northwest corner of section 17, T. 41 S., R 38 E.; USGS The V 7.5 minute topographic quadrangle; latitude 42 degrees 1 minute 6 seconds N and longitude 118 degrees 17 minutes 10 seconds W; NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture: Soils are moist in the winter and spring, dry from about mid or late July through mid or late October; the moisture control section is dry for 45 to 60 consecutive days following the summer solstice; xeric soil moisture regime.
Mean annual soil temperature: 6 to 8 degrees C.
Mean summer soil temperature: 13 to 15 degrees C.
Mollic epipedon thickness: 50 to 100 cm.
Depth to bedrock: 50 to 100 cm to a lithic contact.
Reaction: Slightly acid or neutral.
Particle-size control section - Clay content: 18 to 30 percent.
Rock fragments: Averages 35 to 50 percent, mainly gravel and cobbles. Lithology of fragments are volcanic rocks such as basalt and andesite.
A1 and A2 horizons
Value: 3 through 5 dry, 2 or 3 moist.
Chroma: 1 through 3, dry or moist.
Texture: Gravelly loam, very gravelly loam, very cobbly loam, stony loam, stony clay loam, very stony loam, or very stony clay loam.
Rock fragments: 20 to 50 percent.
A3 horizon - Value: 4 through 7 dry, 3 through 6 moist.
Chroma: 1 or 2, dry or moist.
Texture: Very gravelly loam, very cobbly loam, or very gravelly clay loam.
Clay content: 18 to 30 percent.
Rock fragments: 35 to 50 percent.
COMPETING SERIES: These are the
Badgerton,
Badhap,
Behanco,
Behanin,
Belsac,
Boydhollow,
Bullrey,
Busterback,
Croesus,
Dressel,
Gateview,
Goodski,
Hapgood,
Harcany,
Hobacker,
Lionhead,
Lolon,
Marcetta,
Mundos,
Nagitsy,
Namela,
Nazaton,
Papaspila,
Parkcity,
Poleline,
Povey,
Snacreek,
Snopoc,
Splitbutte,
Sweethollow and
Tonigut series.
Badgerton, Croessus, Goodski, Splitbutte, and Sweethollow soils have less than 18 percent clay in the particle-size control section. Badhap, Behanco, Behanin, Boydhollow, Bullrey, Busterback, Dressel, Gateview, Hapgood, Harcany, Hobacker, Lionhead, Lolon, Marcetta, Mundos, Nazaton, Papaspila, Parkcity, Poleline, Povey, Snacreek, Snopoc, and Tonigut soils do not have bedrock within 100 cm of the soil surface. Belsac soils have a Bk horizon with calcium carbonate equivalent of 2 to 10 percent. Nagitsy soils are dry for over 60 consecutive days. Namela soils have a cambic horizon with channers being the dominant rock fragment shape.
GEOGRAPHIC SETTING: Baconcamp soils are on mountains, hills, and canyons. They typically occur on north-facing shoulder and backslope positions. These soils formed in colluvium derived from volcanic rocks with surficial additions of loess. Slopes are 3 to 80 percent. Elevations range from 1,555 to 2,960 meters. The climate is characterized by cold, moist winters and cool, dry summers. The mean annual precipitation is typically 300 to 460 mm but ranges to 1000 mm on the summit of Steens Mountain. The mean annual temperature is 4 to 6 degrees C. The frost-free period is 30 to 60 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Clamp,
Hackwood, and
Krackle soils and the competing
Hapgood soil. Clamp soils are shallow to bedrock on mountainsides. Hackwood soils are very deep and in concave positions on mountains. Hapgood soils are deep and very deep on mountains. Krackle soils have a mollic epipedon less than 50 cm thick and are on mountainsides.
DRAINAGE AND PERMEABILITY: Well drained; medium to very high surface runoff; moderate permeability; moderately high saturated hydraulic conductivity.
USE AND VEGETATION: Baconcamp soils are used for livestock grazing and wildlife habitat. Potential native vegetation is mountain big sagebrush, mountain snowberry, Idaho fescue, rough fescue, and tufted hairgrass.
DISTRIBUTION AND EXTENT: Southeastern Oregon. These soils are moderately extensive. MLRA 23.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California.
SERIES ESTABLISHED: Harney County, Oregon 1997.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to 89 cm (A1, A2, and A3 horizons).
Lithic contact - The boundary at 89 cm to underlying hard, unweathered bedrock (R layer).
Particle-size control section - The zone from 25 to 89 cm (A3 horizon and part of the A2 horizon).
ADDITIONAL DATA: Previous authors and editors include: MPK-TDT-TM.
National Cooperative Soil Survey
U.S.A.