IDENTIFIERS

  • Current Taxon Name (Soil Name): Lomitas
  • OSD
  • Series Extent
  • User Site ID: S1971AZ019003
  • User Pedon ID: S1971AZ019003
  • Vegetation Plot ID: S1971AZ019003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 71C0002
  • NCSS Pedon Lab Data NASIS Record ID - 13222
  • Print Date: 11/22/2024

    • 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: 31.8675003
  • Std. Longitude: -112.7577744
  • Datum: WGS84
  • Township: 18S
  • Range: 5W
  • Section: 11
  • PLSS Details: 0.125 mile east and 0.06 mile north of the southwest 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 #: 3
  • Sampled As Information:
  • Soil Name - Lomitas
  • Taxonomic Class - Loamy-skeletal, mixed Lithic Calciorthids
  • Classificaton Date - 4/6/1971
  • Moisture Class - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: convex
  • Drainage Class: well
  • Bedrock: tuff, acidic at 33cm
  • Surface Fragments: 70.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/6/1971 (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

    PARKI2

    PARKI2

    Carnegia gigantea

    Parkinsonia

    Parkinsonia

    saguaro

    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

    25

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    —

    439

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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); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; very cobbly loam; weak medium platy structure; slightly hard, friable, nonsticky, slightly plastic; 0.5 very fine roots; 3.0 very fine vesicular and tubular and 3.0 medium tubular pores; 70 percent by volume 2-?-250 millimeter unspecified fragments; slight effervescence; moderately alkaline, pH 8.0, thymol-blue; abrupt wavy boundary. Lab sample # 71C00010; dry when described;
    B2—5 to 25 centimeters (2.0 to 9.8 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; gravelly loam; massive; slightly hard, very friable, nonsticky, slightly plastic; 0.5 very fine roots and fine and medium roots; 3.0 very fine interstitial and 0.5 fine tubular pores; pinkish white (5YR 8/2) carbonate coats on lower surfaces of peds or rocks; 75 percent by volume 2-?-250 millimeter unspecified fragments; strong effervescence; moderately alkaline, pH 8.0, thymol-blue; clear wavy boundary. Lab sample # 71C00011; dry when described;
    C1CA—25 to 33 centimeters (9.8 to 13.0 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; very gravelly loam; soft, very friable, slightly sticky, slightly plastic; 3.0 fine and medium roots; 3.0 fine interstitial pores; pinkish white (5YR 8/2) carbonate coats on rock fragments; 80 percent by volume 2-?-250 millimeter unspecified fragments; violent effervescence; moderately alkaline, pH 8.2, thymol-blue; abrupt irregular boundary. Lab sample # 71C00012; dry when described;. continuous - phpvsfiid 188557; continuous - phpvsfiid 188557
    R—33 to 43 centimeters (13.0 to 16.9 inches); very dark grayish brown (10YR 3/2), gray (10YR 5/1), moist; bedrock; extremely hard; 0.5 fine roots; gray (10YR 5/1) carbonate coats on upper surfaces of peds or rocks and dark brown (10YR 3/3) and brown (10YR 4/3), moist,; fragments.; dry when described;. continuous - phpvsfiid 188558; continuous - phpvsfiid 188558