IDENTIFIERS

  • Current Taxon Name (Soil Name): Blackhawk
  • OSD
  • Series Extent
  • User Site ID: S1966NV027001
  • User Pedon ID: S1966NV027001
  • Vegetation Plot ID: S1966NV027001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3188
  • NCSS Pedon Lab Data NASIS Record ID - 38317
  • Print Date: 3/2/2025

    • 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: 40.6851730
  • Std. Longitude: -117.6592941
  • Datum: WGS84
  • Township: 33N
  • Range: 38E
  • Section: 36
  • PLSS Details: at a point 700 feet east and 500 feet south of the southwest corner
  • Location Description: The site is located about 21 miles south of Winnemucca in Grass Valley, Mount Diablo base line and meridian.
  • State: Nevada
  • County: NV027—Pershing
  • MLRA: 24—Humboldt Basin and Range Area
  • Non-MLRA Soil Survey Area: NV769—Pershing County, Nevada, East Part

    • PEDON

  • Describers Name: L. Langan
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Blackhawk
  • Taxonomic Class - Coarse-loamy, mixed Haploxerollic Durorthids
  • PSC - 25 to 100 cm.
  • Classificaton Date - 5/11/1966
  • Moisture Class - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: alluvial fan
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/11/1966 (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

    ARTR2

    ATCO

    ATCO

    BRTE

    GRSP

    POSE

    POSE

    Artemisia tridentata

    Atriplex confertifolia

    Atriplex confertifolia

    Bromus tectorum

    Grayia spinosa

    Poa secunda

    Poa secunda

    big sagebrush

    shadscale saltbush

    shadscale saltbush

    cheatgrass

    spiny hopsage

    Sandberg bluegrass

    Sandberg bluegrass

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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

    7

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    1484

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    203

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    10.6

    18.3

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    A1—0 to 4 centimeters (0.0 to 1.6 inches); light brownish gray (10YR 6/2), dark grayish brown (10YR 4/2), moist; loam; weak and moderate medium platy structure; slightly hard, very friable, nonsticky, nonplastic; 0.5 very fine roots and fine and medium roots; 21.0 fine and medium vesicular pores; fragments; neutral, pH 7.2, bromthymol blue; abrupt smooth boundary. Lab sample # 40A24933
    B21—4 to 9 centimeters (1.6 to 3.5 inches); light brownish gray (10YR 6/2), dark grayish brown (10YR 4/2), moist; loam; moderate medium platy structure; soft, very friable, nonsticky, nonplastic; 21.0 very fine and fine roots; 21.0 very fine tubular pores; fragments; slightly alkaline, pH 7.4, bromthymol blue; abrupt smooth boundary. Lab sample # 40A24934
    B22—9 to 25 centimeters (3.5 to 9.8 inches); pale brown (10YR 6/3), brown (10YR 4/3), moist; loam; massive; soft, very friable, nonsticky, nonplastic; 21.0 very fine and fine roots; 0.5 very fine and fine tubular pores; fragments; slightly alkaline, pH 7.4, bromthymol blue; clear smooth boundary. Lab sample # 40A24935
    C1—25 to 34 centimeters (9.8 to 13.4 inches); light brownish gray (10YR 6/2), brown (10YR 4/3), moist; loam; massive; soft, very friable, nonsticky, nonplastic; 21.0 very fine and fine roots; 21.0 very fine interstitial and 0.5 very fine tubular pores; fragments; slightly alkaline, pH 7.4, bromthymol blue; clear smooth boundary. Lab sample # 40A24936
    C2si—34 to 43 centimeters (13.4 to 16.9 inches); pale brown (10YR 6/3), brown (10YR 4/3), moist; loam; massive; slightly hard, friable, nonsticky, nonplastic; 21.0 very fine roots and 0.5 fine roots; 3.0 very fine tubular pores; fragments; moderately alkaline, pH 8.2, thymol-blue; clear smooth boundary. Lab sample # 40A24937
    C3sica—43 to 53 centimeters (16.9 to 20.9 inches); pale brown (10YR 6/3), brown (10YR 4/3), moist; loam; weak medium platy structure; hard, firm, weakly coherent by silica, nonsticky, nonplastic; 21.0 very fine roots; 3.0 very fine interstitial and tubular pores; fragments; noneffervescent; strongly alkaline, pH 8.6, thymol-blue; clear smooth boundary. Lab sample # 40A24938
    IIC4sica—53 to 71 centimeters (20.9 to 28.0 inches); brown (10YR 5/3) and pale brown (10YR 6/3), brown (10YR 4/3), moist; sandy clay loam; massive; hard, firm, weakly coherent by silica, slightly sticky, slightly plastic; 0.5 very fine and fine roots; 3.0 very fine interstitial and 0.1 fine tubular pores; white (10YR 8/1); fragments; violent effervescence; very strongly alkaline, pH 9.4, thymol-blue; abrupt wavy boundary. Lab sample # 40A24939. discontinuous - phpvsfiid 197299; discontinuous - phpvsfiid 197299
    IIC5ca—71 to 89 centimeters (28.0 to 35.0 inches); light olive brown (2.5Y 5/3), olive brown (2.5Y 4/3), moist; gravelly sandy clay loam; 21 percent white (10YR 8/1) fine distinct mottles; massive; hard, friable, slightly sticky, slightly plastic; 0.5 very fine and fine roots; 0.5 very fine and fine tubular pores; fragments; noneffervescent; strongly alkaline, pH 8.8, thymol-blue; abrupt wavy boundary. Lab sample # 40A24940
    IIC6ca—89 to 107 centimeters (35.0 to 42.1 inches); light yellowish brown (2.5Y 6/3), dark grayish brown (2.5Y 4/2), moist; gravelly sandy clay loam; 21 percent very pale brown (10YR 7/3) fine distinct mottles; massive; hard, friable, slightly sticky, slightly plastic; 21.0 very fine roots; 0.5 very fine and fine tubular and 21.0 very fine interstitial and tubular pores; fragments; noneffervescent; strongly alkaline, pH 8.6, thymol-blue; abrupt wavy boundary. Lab sample # 40A24941
    IIIC7cac—107 to 122 centimeters (42.1 to 48.0 inches); grayish brown (2.5Y 5/2), olive brown (2.5Y 4/3), moist; Error; 1 percent white (10YR 8/1) fine and coarse distinct mottles; weak thick platy structure; extremely hard, very friable, nonsticky, nonplastic; 0.5 very fine roots; 0.5 very fine and fine tubular pores; fragments; noneffervescent; strongly alkaline, pH 8.7, thymol-blue; clear wavy boundary. Lab sample # 40A24942
    IIIC8cac—122 to 137 centimeters (48.0 to 53.9 inches); brown (10YR 4/3), brown (10YR 4/3), moist; very gravelly loam; 21 percent white (10YR 8/1) fine and medium distinct mottles; weak thick platy structure; extremely hard, very friable, nonsticky, nonplastic; 0.1 very fine roots; 0.5 very fine and fine tubular pores; fragments; violent effervescence; strongly alkaline, pH 8.6, thymol-blue. Lab sample # 40A24943