IDENTIFIERS

  • Current Taxon Name (Soil Name): Harqua
  • OSD
  • Series Extent
  • User Site ID: S1971AZ019006
  • User Pedon ID: S1971AZ019006
  • Vegetation Plot ID: S1971AZ019006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 71C0006
  • NCSS Pedon Lab Data NASIS Record ID - 13226
  • 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: 31.8558331
  • Std. Longitude: -112.7283325
  • Datum: WGS84
  • Township: 18S
  • Range: 5W
  • Section: 13
  • PLSS Details: 0.25 mile north and 1/8 mile west of the 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 Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 6
  • Sampled As Information:
  • Soil Name - Harqua
  • Taxonomic Class - Fine-loamy, mixed Typic Natrargids
  • PSC - 12 to 62 cm.
  • Classificaton Date - 4/7/1971
  • Moisture Class - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: convex
  • Drainage Class: well
  • Surface Fragments: 70.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/7/1971 (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

    AMBRO

    Ambrosia

    ragweed

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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

    2

    —

    —

    488

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    254

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    20.6

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    A2—0 to 5 centimeters (0.0 to 2.0 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; very gravelly sandy loam; moderate medium and coarse platy structure; slightly hard, very friable, nonsticky, slightly plastic; 21.0 very fine and fine vesicular pores; 50 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; strongly alkaline, pH 8.5, thymol-blue; abrupt wavy boundary. Lab sample # 71C00033; dry when described;
    A3sa—5 to 12 centimeters (2.0 to 4.7 inches); strong brown (7.5YR 5/6), yellowish red (5YR 4/6), moist; gravelly loam; massive; soft, very friable, slightly sticky, slightly plastic; 0.5 very fine roots; 3.0 very fine interstitial pores; 40 percent by volume 2-39-75 millimeter unspecified fragments; slight effervescence; strongly alkaline, pH 8.5, thymol-blue; clear wavy boundary. Lab sample # 71C00034; dry when described;
    B21TCAsa—12 to 33 centimeters (4.7 to 13.0 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; gravelly clay loam; weak medium prismatic parts to weak fine and medium subangular blocky structure; hard when dry, friable, slightly sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine tubular and 3.0 very fine interstitial pores; 21 percent fine and medium extremely weakly coherent cemented pinkish white (7.5YR 8/2) lime masses; 2-39-75 millimeter unspecified fragments; strong effervescence; strongly alkaline, pH 8.6, thymol-blue; gradual wavy boundary. Lab sample # 71C00035; dry when described;
    B22TCAsa—33 to 53 centimeters (13.0 to 20.9 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; gravelly clay loam; weak fine and medium subangular blocky structure; hard when dry, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine tubular and 3.0 very fine interstitial pores; 10 percent clay films on faces of peds and in pores; 21 percent fine and medium extremely weakly coherent cemented pinkish white (7.5YR 8/2) lime masses; 2-39-75 millimeter unspecified fragments; violent effervescence; strongly alkaline, pH 8.7, thymol-blue; gradual wavy boundary. Lab sample # 71C00036; dry when described;
    B23TCAsa—53 to 74 centimeters (20.9 to 29.1 inches); reddish brown (5YR 5/4), reddish brown (5YR 4/4), moist; gravelly sandy loam; weak fine and medium subangular blocky structure; hard when dry, friable, slightly sticky, slightly plastic; 0.5 very fine tubular and 3.0 very fine interstitial pores; 10 percent clay films on faces of peds and in pores; 21 percent fine and medium extremely weakly coherent cemented pinkish white (7.5YR 8/2) lime masses; 2-39-75 millimeter unspecified fragments; violent effervescence; strongly alkaline, pH 8.6, thymol-blue; clear wavy boundary. Lab sample # 71C00037; dry when described;
    2C1CAsa—74 to 97 centimeters (29.1 to 38.2 inches); pinkish white (7.5YR 8/2) and light brown (7.5YR 6/4), light brown (7.5YR 6/4) and brown (7.5YR 5/4), moist; gravelly loam; massive; hard when dry, very friable, slightly sticky, moderately plastic; 0.5 very fine interstitial pores; 20 percent by volume 2-39-75 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.4, thymol-blue; abrupt wavy boundary. Lab sample # 71C00038; dry when described;
    2C2CAsa—97 to 112 centimeters (38.2 to 44.1 inches); pinkish white (7.5YR 8/2) and light brown (7.5YR 6/4), light brown (7.5YR 6/4), moist; loam; massive; hard when dry, friable, slightly sticky, moderately plastic; 0.5 very fine tubular pores; 1 percent coarse extremely weakly coherent cemented pinkish white (7.5YR 8/2) lime masses; fragments; violent effervescence; very strongly alkaline, pH 9.2, thymol-blue; clear irregular boundary. Lab sample # 71C00039; dry when described;
    2C3CAsa—112 to 132 centimeters (44.1 to 52.0 inches); light brown (7.5YR 6/4), light brown (7.5YR 6/4), moist; stony very fine sandy loam; massive; hard when dry, very friable, slightly sticky, slightly plastic; 0.5 very fine tubular pores; 1 percent coarse extremely weakly coherent cemented pinkish white (7.5YR 8/2) lime masses and 3 percent fine mica flakes, unspecified; fragments; slight effervescence; strongly alkaline, pH 8.5, thymol-blue. Lab sample # 71C00040; dry when described;