IDENTIFIERS

  • Current Taxon Name (Soil Name): SREDNIC
  • OSD
  • Series Extent
  • User Site ID: S1993OR025010
  • User Pedon ID: S1993OR025010
  • Vegetation Plot ID: S1993OR025010
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 97P0020
  • NCSS Pedon Lab Data NASIS Record ID - 68496
  • Print Date: 11/21/2024

    • LOCATION

  • Location In Web Soil Survey
  • AOI is roughly a square mile and pedon is marked in the center.
  • Location in SoilWeb
  • Location in Google Maps
  • Std. Latitude: 43.0655556
  • Std. Longitude: -118.7450027
  • Datum: WGS84
  • Township: 29S
  • Range: 32E
  • Section: 10
  • PLSS Details: about 2,200 feet north and 1,500 feet west of the southeast corner
  • Location Description: Harney County, Oregon. in the Diamond Craters Outstanding Natural Area, on the Diamond, OR 7.5 feet quadrangle.
  • State: Oregon
  • County: OR025—Harney
  • MLRA: 23—Malheur High Plateau
  • Non-MLRA Soil Survey Area: OR628—Harney County Area, Oregon
  • 7.5 Minute USGS Quad: 43118-A6—Diamond, Oregon

    • PEDON

  • Current Taxonomic Class: Ashy, glassy, frigid Vitrixerandic Haplodurids
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 10
  • Correlated Information:
  • Soil Name - SREDNIC
  • PSC - 25 to 64 cm.
  • Classificaton Date - 7/16/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Srednic
  • Taxonomic Class - Ashy, frigid Vitrixerandic Durorthid
  • Taxon Kind - series
  • Classificaton Date - 10/31/1993
  • Moisture SUBClass - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Runoff: low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/31/1993 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACTH7

    ARTRT

    HECOC8

    Achnatherum thurberianum

    Artemisia tridentata ssp. tridentata

    Hesperostipa comata ssp. comata

    Thurber's needlegrass

    basin big sagebrush

    needle and thread

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    duripan

    0—0

    15—43

    69—76

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    —-

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    Setting and Climate
    Slope Slope Length USLE Upslope Length Elev. Corr. Elev Aspect MAP REAP FFD MAAT MSAT MWAT MAST MSST MWST MFFP PE Index Climate Station ID Climate Station Name Climate Station Type
    % m degrees mm mm C mm

    3

    —

    —

    1298

    —

    279

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    7

    —

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    —

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    A—0 to 5 centimeters (0.0 to 2.0 inches); brown (10YR 4/3), very dark brown (10YR 2/2), moist; very gravelly coarse sandy loam; single grain; loose, nonsticky, nonplastic; 0.5 very fine roots; 35 percent by volume 2-39-75 millimeter unspecified fragments; neutral, pH 6.6, hellige-truog; abrupt smooth boundary. Lab sample # 97P00099. 1 to 2 inches thick. The A horizon has values of 4 or 5 dry, 2 or 3 moist; and chroma of 2 or 3. It has 1 to 3 percent organic matter. It has 35 to 50 percent gravel size cinders.
    Bw1—5 to 15 centimeters (2.0 to 5.9 inches); brown (10YR 5/3), very dark grayish brown (10YR 3/2), moist; gravelly loam; weak fine and medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; 3.0 very fine roots and 0.5 fine roots; 0.5 very fine tubular pores; 30 percent by volume 2-39-75 millimeter unspecified fragments; slightly alkaline, pH 7.6, hellige-truog; clear smooth boundary. The mollic colors in the Bw horizon are from the parent material. The upper part of the Bw has values of 4 or 5 dry. It is gravelly sandy loam, gravelly loam, and very gravelly sandy loam. Rock fragment content is 15 to 40 percent. Clay content is 5 to 18 percent. It has 0.5 to 1 percent organic matter. The lower part of the Bw horizon has values of 5 or 6 dry, 2 or 3 moist, and chromas of 2 through 4. It is gravelly sandy loam or gravelly loam. Rock fragment content is 15 to 35 percent by volume. Clay content is 5 to 18 percent. Reaction is mildly to moderately alkaline.
    Bw2—15 to 43 centimeters (5.9 to 16.9 inches); brown (10YR 5/3), very dark grayish brown (10YR 3/2), moist; gravelly sandy loam; weak fine and medium subangular blocky structure; soft, very friable, nonsticky, slightly plastic; 3.0 very fine roots and medium and coarse roots and 0.5 fine roots; 0.5 very fine tubular pores; 30 percent by volume 2-39-75 millimeter unspecified fragments; slightly alkaline, pH 7.6, hellige-truog; clear smooth boundary. Combined thickness of the Bw1 and Bw2 horizons is 11 to 19 inches. The mollic colors in the Bw horizon are from the parent material. The upper part of the Bw has values of 4 to 5 dry. It is gravelly sandy loam, gravelly loam, and very gravelly sandy loam. Rock fragment content is 15 to 40 percent. Clay content is 5 to 18 percent. It has 0.5 to 1 percent organic matter. The lower part of the Bw horizon has values of 5 or 6 dry, 2 or 3 moist, and chromas of 2 through 4. It is gravelly sandy loam or gravelly loam. Rock fragment content is 15 to 35 percent by volume. Clay content is 5 to 18 percent. Reaction is mildly to moderately alkaline.
    Bw3—43 to 64 centimeters (16.9 to 25.2 inches); pale brown (10YR 6/3), dark brown (10YR 3/3), moist; gravelly loam; moderate medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 3.0 very fine roots and 0.5 fine and medium roots; 3.0 very fine tubular pores; 5 percent by volume 75-162-250 millimeter unspecified fragments and 25 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.0, hellige-truog; abrupt wavy boundary. 8 to 12 inches thick. The mollic colors in the Bw horizon are from the parent material. The upper part of the Bw has values of 4 or 5 dry. It is gravelly sandy loam, gravelly loam, and very gravelly sandy loam. Rock fragment content is 15 to 40 percent. Clay content is 5 to 18 percent. It has 0.5 to 1 percent organic matter. The lower part of the Bw horizon has values of 5 or 6 dry, 2 or 3 moist, and chromas of 2 through 4. It is gravelly sandy loam or gravelly loam. Rock fragment content is 15 to 35 percent by volume. Clay content is 5 to 18 percent. Reaction is mildly to moderate alkaline.
    Bkqm1—64 to 69 centimeters (25.2 to 27.2 inches); light gray (10YR 7/2) and white (10YR 8/1) and very pale brown (10YR 7/4), light yellowish brown (10YR 6/4) and very pale brown (10YR 7/4), moist; 0.5 very fine roots; fragments; abrupt smooth boundary. Lab sample # 97P00101. 1 to 3 inches thick. Strongly cemented duripan. The Bkqm horizon has values dry of 7 or 8 dry, 6 or 7 moist, and chromas of 1 through 4. Strongly effervescent with disseminated lime.
    Bkqm2—69 to 76 centimeters (27.2 to 29.9 inches); light gray (10YR 7/2) and white (10YR 8/1) and very pale brown (10YR 7/4), light yellowish brown (10YR 6/4) and very pale brown (10YR 7/4), moist; fragments; violent effervescence; abrupt smooth boundary. Indurated duripan with pockets of weathered bedrock. 2 to 20 inches thick. The Bkqm horizon has values dry of 7 or 8 dry, 6 or 7 moist, and chromas of 1 through 4.
    2R—76 centimeters (29.9 inches); fragments. Welded tuff.