IDENTIFIERS

  • Current Taxon Name (Soil Name): Graham
  • OSD
  • Series Extent
  • User Site ID: S1969AZ003026
  • User Pedon ID: S1969AZ003026
  • Vegetation Plot ID: S1969AZ003026
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 69C0172
  • NCSS Pedon Lab Data NASIS Record ID - 43745
  • 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: 31.9602776
  • Std. Longitude: -109.4502792
  • Datum: WGS84
  • Township: 17S
  • Range: 28E
  • Section: 13
  • PLSS Details: 1,000 feet south and 2,000 feet east of the northwest corner
  • Location Description: East of State Highway 181, about 4 miles north and 22 miles east of Pearce.
  • State: Arizona
  • County: AZ003—Cochise

    • PEDON

  • Describers Name: D. Richmond, K. Dunstan
  • Current Taxonomic Class: Clayey, mixed, active, thermic Lithic Argiustolls
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 26
  • Correlated Information:
  • Soil Name - Graham
  • PSC - 5 to 41 cm.
  • Classificaton Date - 2/1/2010
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Luzena
  • Classificaton Date - 10/23/1969
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hill
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Bedrock: rhyolite
  • Surface Fragments: 50.00 percent subangular 5- to 50-millimeter rhyolite, 30.00 percent subangular 80- to 200-millimeter rhyolite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/23/1969 (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

    BOBA3

    JUNIP

    OPUNT

    OPUNT

    YUCCA

    Bothriochloa barbinodis

    Juniperus

    Opuntia

    Opuntia

    Yucca

    cane bluestem

    juniper

    pricklypear

    pricklypear

    yucca

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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

    —

    —

    1561

    —

    225

    457

    —

    —

    13.9

    23.3

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    A1—0 to 5 centimeters (0.0 to 2.0 inches); brown (7.5YR 4/2), dark reddish brown (5YR 2/2), moist; very gravelly loam; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 21.0 fine and medium roots; 3.0 fine to coarse tubular pores; fragments; noneffervescent; moderately acid, pH 6.0, hellige-truog; abrupt wavy boundary. Lab sample # 69C00884; dry when described;
    B21T—5 to 20 centimeters (2.0 to 7.9 inches); dark reddish gray (5YR 4/2), dark reddish brown (5YR 3/2), moist; clay; moderate fine and medium angular blocky, and subangular blocky structure; very hard, firm, moderately sticky, very plastic; 21.0 fine and medium roots; 0.5 very fine tubular pores; 30 percent clay films on faces of peds and 30 percent pressure faces; 5 percent by volume subangular 8-?-10 millimeter rhyolite fragments; noneffervescent; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # 69C00885; dry when described;
    B22T—20 to 41 centimeters (7.9 to 16.1 inches); brown (10YR 4/3), dark brown (10YR 3/3), moist; clay; moderate fine and medium angular blocky, and subangular blocky structure; very hard, firm, moderately sticky, very plastic; 21.0 fine and medium roots; 0.5 very fine tubular pores; 30 percent clay films on faces of peds and 30 percent pressure faces; 5 percent by volume subangular 5-?-10 millimeter rhyolite fragments; noneffervescent; neutral, pH 7.0, hellige-truog; abrupt irregular boundary. Lab sample # 69C00886; dry when described;
    R—41 to 51 centimeters (16.1 to 20.1 inches); light yellowish brown (10YR 6/4) and very dark gray (10YR 3/1), brown (10YR 4/3) and black (10YR 2/1), moist; bedrock; massive; extremely hard; 0.5 very fine roots; carbonate coats on faces of peds; fragments; violent effervescence; slightly acid, pH 6.5, hellige-truog.; dry when described;