IDENTIFIERS

  • Current Taxon Name (Soil Name): Mokelumne
  • OSD
  • Series Extent
  • User Site ID: S1996CA005006
  • User Pedon ID: 96CA005006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 97P0070
  • Print Date: 11/23/2024

    • 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: 38.2871137
  • Std. Longitude: -120.8922655
  • Datum: WGS84
  • Township: 5N
  • Range: 10E
  • Section: 17
  • PLSS Details: About 1 1/4 miles SE of Buena Vista on Buena Vista Road; about 350 feet southwesterly from the northern boundary of the ACEC area along the central bisecting SW/NE road; thence 80 feet north of road; or 300 feet northeast along the same road from the Y
  • Location Description: (NW 1/4 Grid A7).
  • State: California
  • County: CA005—Amador
  • MLRA: 18—Sierra Nevada Foothills
  • Regional Office: SW—Southwest
  • MLRA Soil Survey Area: SW-SON—Sonora, California
  • Non-MLRA Soil Survey Area: CA628—Amador Area, California
  • 7.5 Minute USGS Quad: 38120-C8—Ione, California

    • PEDON

  • Describers Name: Terry D. Cook and William Westerling.
  • Current Taxonomic Class: Fine, kaolinitic, thermic Typic Haploxerults
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - Mokelumne
  • PSC - 30 to 80 cm.
  • Classificaton Date - 1/24/2024
  • Classifier - Cathy Scott
  • Soil Taxonomic Edition - thirteenth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - UNNAMED
  • Taxonomic Class - Clayey, kaolinitic Typic Haploxerults
  • PSC - 25 to 75 cm.
  • Classificaton Date - 5/3/1996
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium and/or sandstone
  • Landscape: hills
  • Landform: terrace
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Bedrock: moderately coherent sandstone, unspecified at 138cm
  • Surface Fragments: 9.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/3/1996 (actual site observation date)
  • Air Photo ID: 10-2-5
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - other
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    moderately coherent

    138 - 180

    - 42 -

    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    kandic horizon

    paralithic materials

    paralithic contact

    0—18

    30—138

    30—138

    138—180

    138—

    —18—

    —108—

    —108—

    —42—

    —-
    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

    11

    —

    —

    116

    —

    270

    500

    —

    —

    16

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi&Oe—0 to 5 centimeters (0.0 to 2.0 inches); partially decomposed organic matter; fragments.
    A—5 to 12 centimeters (2.0 to 4.7 inches); reddish brown (5YR 4/3), dark reddish brown (5YR 3/3), moist; fine sandy loam; 72 percent sand; 20 percent silt; 8 percent clay; moderate fine and medium subangular blocky parts to medium and coarse granular structure; slightly hard, very friable, nonsticky, nonplastic; 3.0 fine and medium roots and 3.0 coarse roots; 3.0 very fine and fine tubular and 21.0 very fine interstitial pores; 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; abrupt wavy boundary. Lab sample # 97P00423; dry when described;. 10 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.
    AB—12 to 30 centimeters (4.7 to 11.8 inches); reddish brown (5YR 5/4), reddish brown (5YR 4/4) and dark reddish brown (5YR 3/4), moist; fine sandy loam; 68 percent sand; 19 percent silt; 12 percent clay; moderate medium and coarse subangular blocky structure; slightly hard, friable, nonsticky, slightly plastic; 3.0 fine and medium roots and 3.0 coarse roots; 0.5 very fine and fine tubular and 3.0 very fine interstitial pores; 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # 97P00424; slightly moist when described;. 10 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.
    2Bt1—30 to 60 centimeters (11.8 to 23.6 inches); reddish yellow (5YR 7/6) and reddish yellow (5YR 6/6) and reddish yellow (7.5YR 6/8), red (2.5YR 5/8) and reddish yellow (7.5YR 6/8), moist; clay; 32 percent sand; 10 percent silt; 58 percent clay; weak coarse subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 0.5 very fine and fine roots and 0.5 medium and coarse roots; 0.5 very fine tubular pores; 30 percent clay films on faces of peds and in pores and 30 percent clay films on sand and gravel; 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; extremely acid, pH 4.4, hellige-truog; abrupt wavy boundary. Lab sample # 97P00425; slightly moist when described;. 10 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.; continuous - phpvsfiid 183236; continuous - phpvsfiid 183236
    2Bt2—60 to 100 centimeters (23.6 to 39.4 inches);, red (10R 4/8) and reddish yellow (7.5YR 6/8) and red (2.5YR 4/6), moist; gravelly clay; 38 percent sand; 6 percent silt; 57 percent clay; weak medium and coarse subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 0.1 fine and medium roots; 0.5 very fine tubular pores; 30 percent clay films on faces of peds and in pores; 20 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.6, hellige-truog; gradual wavy boundary. Lab sample # 97P00426; slightly moist when described;. 20 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.
    2BCt—100 to 138 centimeters (39.4 to 54.3 inches); 45 percent red (10R 4/6) and 45 percent reddish yellow (7.5YR 6/8) and 10 percent red (2.5YR 4/6) gravelly sandy clay; 49 percent sand; 9 percent silt; 42 percent clay; weak medium and coarse subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 0.1 fine and medium roots; 0.5 very fine and fine tubular pores; 30 percent clay films in root channels and/or pores; 20 percent by volume subrounded 2-39-75 millimeter unspecified fragments; extremely acid, pH 4.2, hellige-truog; abrupt wavy boundary. Lab sample # 97P00427; slightly moist when described;. 20 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.; continuous - phpvsfiid 183239; continuous - phpvsfiid 183239
    3Cr—138 to 180 centimeters (54.3 to 70.9 inches); white (N 8/0), gray (10YR 6/1), moist; bedrock; 32 percent sand; 46 percent silt; 23 percent clay; massive; extremely hard, extremely firm*; fragments; extremely acid, pH 4.2, hellige-truog. Lab sample # 97P00428