IDENTIFIERS

  • Current Taxon Name (Soil Name): San Joaquin
  • OSD
  • Series Extent
  • User Site ID: S1979CA067006
  • User Pedon ID: 79CA067006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 79P0231
  • Print Date: 4/3/2025

    • 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: 38.3782349
  • Std. Longitude: -121.2610321
  • Datum: WGS84
  • Location Description: 0.25 mi S of intersection of Twin Cities Rd and Christenson Rd; unsectionized part of T5N., R.6E.
  • State: California
  • County: CA067—Sacramento

    • PEDON

  • Describers Name: Wayne B. Sheldon
  • Current Taxonomic Class: Fine, mixed, active, thermic Abruptic Durixeralfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - San Joaquin
  • Classificaton Date - 3/11/2025
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - San Joaquin
  • Taxonomic Class - Fine, mixed, thermic Abruptic Durixeralf
  • Taxon Kind - series
  • Classificaton Date - 6/1/1979
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: terrace—stream or lake
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1979 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    abrupt textural change

    argillic horizon

    duripan

    0—58

    58—71

    58—71

    71—137

    —58—

    —13—

    —13—

    —66—
    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

    —

    —

    11

    —

    270

    38

    —

    —

    19

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 10 centimeters (0.0 to 3.9 inches); strong brown (7.5YR 5/6) interior, brown (7.5YR 4/4) interior, moist; loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots; 2.5 very fine interstitial and tubular pores; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 79P01152. many very fine roots
    A2—10 to 18 centimeters (3.9 to 7.1 inches); strong brown (7.5YR 5/6) interior, brown (7.5YR 4/4) interior, moist; loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots; 2.5 very fine interstitial and tubular and 0.5 fine tubular pores; fragments; moderately acid, pH 6.0, hellige-truog. Lab sample # 79P01153. few very fine roots
    A3—18 to 41 centimeters (7.1 to 16.1 inches); strong brown (7.5YR 5/6) interior, brown (7.5YR 4/4) interior, moist; loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots; 2.5 very fine and fine interstitial and 0.5 medium tubular pores; fragments; slightly acid, pH 6.5, hellige-truog. Lab sample # 79P01154. few very fine roots
    A4—41 to 58 centimeters (16.1 to 22.8 inches); strong brown (7.5YR 5/6) interior, brown (7.5YR 4/4) interior, moist; loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots; 2.5 very fine interstitial and tubular and 0.5 fine and medium tubular pores; fragments; slightly acid, pH 6.5, hellige-truog. Lab sample # 79P01155. few very fine roots
    Bt—58 to 71 centimeters (22.8 to 28.0 inches); yellowish red (5YR 5/6) interior, yellowish red (5YR 4/6) interior, moist; clay; medium columnar structure; very hard, very firm, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine tubular pores; fragments; neutral, pH 7.0, hellige-truog. Lab sample # 79P01156. few very fine roots
    Bqm—71 to 99 centimeters (28.0 to 39.0 inches); strong brown (7.5YR 5/6) interior, yellowish red (5YR 4/6) interior, moist; fragments; neutral, pH 7.0, hellige-truog. Lab sample # 79P01157
    Bq1—99 to 114 centimeters (39.0 to 44.9 inches); yellowish brown (10YR 5/6) interior, dark yellowish brown (10YR 4/4) interior, moist; fragments; slightly alkaline, pH 7.4, hellige-truog. Lab sample # 79P01158
    Bq2—114 to 137 centimeters (44.9 to 53.9 inches); yellowish brown (10YR 5/6) interior, dark yellowish brown (10YR 4/4) interior, moist; fragments; slightly alkaline, pH 7.4, hellige-truog. Lab sample # 79P01159
    C—137 to 191 centimeters (53.9 to 75.2 inches); yellowish brown (10YR 5/6) interior, dark yellowish brown (10YR 4/4) interior, moist; loam; hard, friable, slightly sticky, slightly plastic; fragments; slightly alkaline, pH 7.7, hellige-truog. Lab sample # 79P01160