IDENTIFIERS

  • Current Taxon Name (Soil Name): Mokelumne
  • OSD
  • Series Extent
  • User Site ID: S1996CA005007
  • User Pedon ID: 96CA005007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 97P0071
  • 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: 38.2869482
  • Std. Longitude: -120.8945712
  • Datum: WGS84
  • Township: 5N
  • Range: 10E
  • Section: 17
  • PLSS Details: About 1 1/4 miles SE of Buena Vista on Buena Vista Road; 15 to 20 feet south of the northern E/W dirt road, 550 feet west from the Y intersection near the center of the NE 1/4, SE 1/4; the Y is also about in the center of the ACEC; near the center
  • Location Description: (SE 1/4 of Grid A5).
  • 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: Clayey-skeletal, kaolinitic, thermic Typic Haploxerults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 7
  • Correlated Information:
  • Soil Name - Mokelumne
  • PSC - 28 to 60 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-skeletal, kaolinitic Typic Haploxerults
  • PSC - 28 to 60 cm.
  • Classificaton Date - 5/4/1996
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium and/or sandstone
  • Landscape: hills
  • Landform: terrace
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Bedrock: moderately coherent sandstone, unspecified at 60cm
  • Surface Fragments: 1.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/4/1996 (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

    60 - 185

    - 125 -

    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

    33—65

    33—65

    60—185

    60—

    —18—

    —32—

    —32—

    —125—

    —-
    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

    6

    —

    —

    116

    —

    225

    500

    —

    —

    16

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi&Oe—0 to 5 centimeters (0.0 to 2.0 inches); partially decomposed organic matter; fragments. Lab sample # 97P00430
    A—5 to 10 centimeters (2.0 to 3.9 inches); reddish brown (5YR 5/4), dark reddish brown (5YR 3/4), moist; fine sandy loam; 67 percent sand; 24 percent silt; 9 percent clay; moderate fine and medium subangular blocky parts to moderate medium and coarse granular structure; slightly hard, friable, nonsticky, slightly plastic; 3.0 very fine and fine roots and 3.0 fine and medium roots; 3.0 very fine and fine tubular and 3.0 very fine interstitial pores; 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.3, hellige-truog; clear wavy boundary. Lab sample # 97P00429. 10 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.
    ABt—10 to 20 centimeters (3.9 to 7.9 inches); reddish brown (5YR 4/4), reddish brown (2.5YR 4/4), moist; gravelly fine sandy loam; 63 percent sand; 25 percent silt; 12 percent clay; weak medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 3.0 very fine and fine roots and 3.0 medium roots and 0.5 coarse roots; 3.0 very fine and fine tubular pores; 10 percent clay films in root channels and/or pores and 10 percent clay films on sand and gravel; 5 percent by volume 75-163-250 millimeter unspecified fragments and 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.4, hellige-truog; clear wavy boundary. Lab sample # 97P00430. 12-15 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 2 inches in size.
    Bt—20 to 33 centimeters (7.9 to 13.0 inches); reddish brown (5YR 5/4), dark red (2.5YR 3/6), moist; gravelly fine sandy loam; 60 percent sand; 26 percent silt; 14 percent clay; moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 very fine and fine roots and 0.5 medium and coarse roots; 21.0 very fine and fine tubular pores; 10 percent clay films in root channels and/or pores and 75 percent clay films on sand and gravel; 5 percent by volume 75-163-250 millimeter unspecified fragments and 15 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; abrupt irregular boundary. Lab sample # 97P00431. 15 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 2 inches in size; 5 percent fragments 7 to 25 cm in size.; continuous - phpvsfiid 183242; continuous - phpvsfiid 183242
    2Btv—33 to 65 centimeters (13.0 to 25.6 inches); red (2.5YR 5/6), red (2.5YR 4/6), moist; very cobbly clay; 43 percent sand; 17 percent silt; 41 percent clay; moderate fine and medium subangular blocky structure; hard, friable, nonsticky, moderately plastic; 0.1 very fine and fine roots and 0.1 medium and coarse roots; 3.0 very fine and fine tubular and 0.5 medium tubular pores; 10 percent clay films in root channels and/or pores and 75 percent clay films on faces of peds and in pores; 15 percent by volume angular 2-39-75 millimeter unspecified fragments and 40 percent by volume 75-163-250 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear irregular boundary. Lab sample # 97P00432. continuous - phpvsfiid 183244; continuous - phpvsfiid 183244; 15 percent petroplinthitic fragments and a few quartzitic gravel 2 mm to 3 inches in size, 40 percent fragments 7 to 25 cm in size; 10 to 30 cm thick highly fractured petroplinthitic fragments, in places has appearance of indurated sandstone bedrock and is discontinuous.
    3Bv/3Cr—65 to 190 centimeters (25.6 to 74.8 inches); red (2.5YR 4/6) and red (2.5YR 4/8) and red (10R 4/8) and strong brown (7.5YR 5/8) and reddish yellow (7.5YR 6/8) and reddish yellow (7.5YR 6/6) and brownish yellow (10YR 6/6) and brownish yellow (10YR 6/8), gray (10YR 6/1) and light gray (N 7/0), moist; bedrock; 45 percent sand; 17 percent silt; 39 percent clay; 0.5 roots; fragments; very strongly acid, pH 5.0, hellige-truog. Lab sample # 97P00433. Variegated multiple mixed strata or reticulate lenticular lenses; gray colors are mostly dominantly vertical root channels and has appearance of redoximorphic features; the redder hues dominantly surrounding he yellow hues in thin bands; random discontinuous 2 to 10 mm bands or lenticular masses of hard petroplinthite.