IDENTIFIERS

  • Current Taxon Name (Soil Name): Gunsight
  • OSD
  • Series Extent
  • User Site ID: S1971AZ019001
  • User Pedon ID: S1971AZ019001
  • Vegetation Plot ID: S1971AZ019001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 71C0008
  • NCSS Pedon Lab Data NASIS Record ID - 13228
  • Print Date: 9/24/2024

    • 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: 31.8974991
  • Std. Longitude: -112.8141632
  • Datum: WGS84
  • Township: 17S
  • Range: 5W
  • Section: 31
  • PLSS Details: 3/16 mile west and 1/8 mile north of southeast corner
  • Location Description: Organ Pipe Cactus National Monument.
  • State: Arizona
  • County: AZ019—Pima
  • Non-MLRA Soil Survey Area: AZ648—Cabeza Prieta Area, Arizona, Parts of Pima and Yuma Counties

    • PEDON

  • Describers Name: Y. H. Havens, E. Chamberlin
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Gunsight
  • Taxonomic Class - Loamy-skeletal, mixed Typic Calciorthids
  • PSC - 25 to 100 cm.
  • Classificaton Date - 4/5/1971
  • Moisture Class - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Drainage Class: well
  • Surface Fragments: 80.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/5/1971 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • 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

    CAGI7

    EUSID

    PARKI2

    PARKI2

    Carnegia gigantea

    Eusideroxylon

    Parkinsonia

    Parkinsonia

    saguaro

    ironwood

    paloverde

    paloverde

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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

    1

    —

    —

    442

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    229

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    20.6

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    A1—0 to 5 centimeters (0.0 to 2.0 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; gravelly fine sandy loam; weak medium platy structure; slightly hard, very friable, nonsticky, slightly plastic; 0.5 very fine roots; 0.5 fine and medium tubular pores; 50 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.1, thymol-blue; abrupt wavy boundary. Lab sample # 71C00048; dry when described;
    B21—5 to 17 centimeters (2.0 to 6.7 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; very gravelly fine sandy loam; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 3.0 very fine roots and 0.5 medium roots; 0.5 fine tubular pores; 55 percent by volume 2-39-75 millimeter unspecified fragments; strong effervescence; moderately alkaline, pH 8.1, thymol-blue; clear wavy boundary. Lab sample # 71C00049; dry when described;
    B22—17 to 31 centimeters (6.7 to 12.2 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; gravelly loam; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 21.0 very fine roots and 3.0 medium roots; 0.5 fine tubular pores; 3 percent fine pink (7.5YR 8/4); 45 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.2, thymol-blue; abrupt irregular boundary. Lab sample # 71C00050; dry when described;
    C1CA—31 to 58 centimeters (12.2 to 22.8 inches); pinkish white (7.5YR 8/2) and pink (7.5YR 8/4), brown (7.5YR 5/4) and light brown (7.5YR 6/4), moist; very gravelly loam; massive; hard when dry, friable, slightly sticky, moderately plastic; 3.0 very fine roots and fine and medium roots; 3.0 fine interstitial and 0.5 fine tubular pores; 3 percent fine pink (7.5YR 8/4); 60 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.2, thymol-blue; clear irregular boundary. Lab sample # 71C00051; dry when described;. 15 to 20 percent of horizon consists of krotovinas filled with soil materials from A and B horizons; krotovinas are 3 to 6 feet apart and up to 12 inches in diameter; space between gravel is completely filled with limy soil material
    C2CA—58 to 77 centimeters (22.8 to 30.3 inches); pinkish white (7.5YR 8/2) and pink (7.5YR 8/4), brown (7.5YR 5/4) and light brown (7.5YR 6/4), moist; very gravelly sandy loam; massive; hard when dry, friable, slightly sticky, moderately plastic; 3.0 very fine roots; 3.0 fine interstitial and 0.5 fine tubular pores; 70 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.3, thymol-blue; clear wavy boundary. Lab sample # 71C00052; dry when described;. 15 to 20 percent of horizon consists of krotovinas filled with soil materials from A and B horizons, krotovinas are 3 to 6 feet apart and up to 12 inches in diameter
    C3CA—77 to 119 centimeters (30.3 to 46.9 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; very gravelly loam; massive; very hard, friable, slightly sticky, moderately plastic; 0.5 very fine roots; 21.0 fine interstitial pores; brown (7.5YR 5/4), moist,; 21 percent medium and coarse weakly coherent cemented pinkish white (7.5YR 8/2) lime masses; 60 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.3, thymol-blue; clear wavy boundary. Lab sample # 71C00053; dry when described;
    C4—119 to 152 centimeters (46.9 to 59.8 inches); light brown (7.5YR 6/4), pink (7.5YR 7/4), moist; very gravelly sandy loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 3.0 fine interstitial pores; pink (7.5YR 7/4), moist,; 1 percent medium pinkish white (7.5YR 8/2) lime masses; 70 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.3, thymol-blue.; dry when described;