IDENTIFIERS

  • Current Taxon Name (Soil Name): Graham
  • OSD
  • Series Extent
  • User Site ID: S1969AZ003022
  • User Pedon ID: S1969AZ003022
  • Vegetation Plot ID: S1969AZ003022
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 69C0168
  • NCSS Pedon Lab Data NASIS Record ID - 43741
  • Print Date: 11/11/2024

    • 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: 31.9500008
  • Std. Longitude: -109.4458313
  • Datum: WGS84
  • Township: 17S
  • Range: 28E
  • Section: 13
  • PLSS Details: 1,980 feet west and 660 feet north of southeast corner
  • Location Description: East of State Highway 181, about 22 miles east and 3-1/2 miles north of Pearce.
  • State: Arizona
  • County: AZ003—Cochise

    • PEDON

  • Describers Name: D. Richmond, H. Havens, K. Dunstan
  • Current Taxonomic Class: Fine, illitic, thermic Lithic Argiustolls
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 22
  • Correlated Information:
  • Soil Name - Graham
  • PSC - 18 to 43 cm.
  • Classificaton Date - 2/1/2010
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Luzena
  • Classificaton Date - 10/21/1969
  • 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: 25.00 percent subangular 5- to 75-millimeter rhyolite, 15.00 percent subangular 75- to 150-millimeter rhyolite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/21/1969 (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

    BOER4

    LEDU

    LEDU

    YUCCA

    Bothriochloa barbinodis

    Bouteloua eriopoda

    Leptochloa dubia

    Leptochloa dubia

    Yucca

    cane bluestem

    black grama

    green sprangletop

    green sprangletop

    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

    7

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    1539

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    180

    432

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    13.9

    23.3

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    A1—0 to 8 centimeters (0.0 to 3.1 inches); brown (10YR 5/3), dark brown (7.5YR 3/2), moist; gravelly loam; weak fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; 21.0 fine and medium roots; 3.0 very fine and fine tubular pores; 10 percent by volume subangular 75-?-150 millimeter rhyolite fragments and 25 percent by volume subangular 5-?-40 millimeter rhyolite fragments; noneffervescent; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 69C00865; dry when described;. about 40 percent surface cover of subangular rhyolite gravel and cobbles, 25 percent of the cover is 1/4 to 2 inch gravel and 15 percent is 3 to 6 inch cobble; horizon contains about 25 percent by volume of 1/4 to 1 1/2 inch subangular rhyolite gravel and 10 percent by volume of 3 to 6 inch cobbles
    B21T—8 to 25 centimeters (3.1 to 9.8 inches); reddish brown (5YR 4/3), dark reddish brown (5YR 3/3), moist; clay; moderate fine and medium subangular blocky, and angular blocky structure; very hard, friable, moderately sticky, very plastic; 3.0 fine and medium roots; 0.5 fine tubular pores; 30 percent clay films on faces of peds; 10 percent by volume subangular 5-?-75 millimeter rhyolite fragments; noneffervescent; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # 69C00866; dry when described;. about 10 percent by volume of 1/4 to 1 1/2 inch subangular rhyolite gravel
    B22T—25 to 43 centimeters (9.8 to 16.9 inches); reddish brown (5YR 4/4), reddish brown (5YR 4/4), moist; clay; moderate fine and medium subangular blocky, and angular blocky structure; very hard, friable, moderately sticky, very plastic; 3.0 very fine and fine roots; 30 percent clay films on faces of peds; fragments; noneffervescent; neutral, pH 7.0, hellige-truog; abrupt irregular boundary. Lab sample # 69C00867; dry when described;
    R—43 to 48 centimeters (16.9 to 18.9 inches); light gray (5Y 7/2), olive gray (5Y 4/2), moist; bedrock; massive; extremely hard; 0.5 medium and coarse roots; fragments; slight effervescence; neutral, pH 7.0, hellige-truog.; dry when described;