IDENTIFIERS

  • Current Taxon Name (Soil Name): Lodo
  • OSD
  • Series Extent
  • User Site ID: S1956-CA-52-007
  • User Pedon ID: 56-CA-52-007
  • Vegetation Plot ID: 1956-CA-52-007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - UCDAVIS
  • Lab Pedon # - UCD5652007
  • NCSS Pedon Lab Data NASIS Record ID - 41320
  • Print Date: 2/17/2025

    • 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: 40.1953639
  • Std. Longitude: -122.6891861
  • Datum: WGS84
  • Township: 27N
  • Range: 7W
  • Section: 18
  • PLSS Details: SE/4, NE/4
  • Location Description: Tehama County, California. 1.5 miles north of Cold Fork in the SE1/4 NE1/4 sec.18, T.27N., R.7W.
  • Map Unit: LdE2—Lodo and Maymen shaly loams, 30 to 65 percent slopes, eroded
  • Country: US—United States
  • State: California
  • County: CA103—Tehama
  • MLRA: 15—Central California Coast Range
  • Non-MLRA Soil Survey Area: CA645—Tehama County, California
  • 7.5 Minute USGS Quad: 40122-B6—Cold Fork, California

    • PEDON

  • Describers Name: K. D. Gowans
  • Current Taxonomic Class: Loamy, mixed, superactive, thermic Lithic Haploxerepts
  • Current Taxon Kind: taxadjunct
  • Pedon Type: TUD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Lodo
  • PSC - 0 to 23 cm.
  • Classificaton Date - 7/20/2015
  • Classifier - Ryan Miebach
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Lodo
  • Taxonomic Class - Loamy, mixed, thermic Lithic Haploxerolls
  • Classificaton Date - 2/13/2009
  • Classifier - K. D. Gowans
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Pedon Vegetation and Crop Cover Information:
  • Range Veg. Canopy Type Dominant - shrub
  • Range Veg. Canopy Type Secondary - none
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from shale
  • Landscape: foothills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: lower third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Drainage Pattern: rectangular
  • Runoff: high
  • Ksat Class Upper: moderately low
  • Drainage Class: somewhat excessively
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: strongly coherent slight weathered shale, unspecified at 18cm with <10; strongly coherent slight weathered shale, unspecified at 23cm with 10 to <45
  • Geology: Shasta (lower Cretaceous) Rocks member of the Great Valley Sequence group. ; Shasta (lower Cretaceous) Rocks member of the Great Valley Sequence group.
  • Surface Fragments:
  • Benchmark Soil?: yes

    • VEGETATION

  • Ecological Sites. (Click Ecological Site ID For Link to EDIT.)
    Ecological Site ID Ecological Site Name Correlation Data Classifier
    R015XF016CA Very Shallow Steep Foothills Judy Welles

    • SITE OBSERVATION

  • Observation Date: 10/15/1956 (actual site observation date)
  • Data Collector: K. D. Gowans
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - shrub cover
  • Site Obs. Cover Kind 2 - native shrubs
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Kind of Land: rangeland
  • Site Erosion Accelerated: water erosion sheet
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    A1

    A2

    Bw

    0

    5

    18

    5

    18

    23

    —

    —

    —

    Esther B. Perry

    Esther B. Perry

    Esther B. Perry

    26

    25

    28

    —

    —

    —

    21.3

    24.1

    32.5

    —

    —

    —

    —

    —

    —

    52.7

    50.9

    39.5

    sieves

    sieves

    sieves

    16.6

    21.1

    15.6

    23.2

    17.2

    14.3

    7

    8

    4.6

    3.9

    2.8

    2.8

    2

    1.8

    2.2

    300 mesh sieve

    300 mesh sieve

    300 mesh sieve

    scl

    sicl

    cl

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    —

    —

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    —
    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    A1

    A2

    Bw

    0

    5

    18

    5

    18

    23

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    A1

    A2

    Bw

    0

    5

    18

    5

    18

    23

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    QUDO

    2SHRUB

    2GA

    2FA

    Quercus douglasii

    —

    —

    —

    blue oak

    Shrub (>.5m)

    Grass, annual

    Forb, annual

    tree

    shrub/vine

    grass/grasslike

    forb

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    strongly coherent

    23 -

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

    ochric epipedon

    cambic horizon

    lithic contact

    0—18

    5—23

    23—

    —18—

    —18—

    —-
    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

    15

    —

    —

    390

    —

    180

    831

    —

    —

    15.8

    24.7

    7.8

    16.8

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    A1—0 to 5 centimeters (0.0 to 2.0 inches); pale brown (10YR 6/3), dark brown (10YR 3/3), moist; sandy clay loam; weak coarse subangular blocky structure; soft, very friable, nonsticky; many fine roots; many medium and many fine pores; 1 percent by volume , 0 percent by weight flat angular strongly coherent cemented 5-?-13 millimeter shale, unspecified fragments observed by weighed method and 5 percent by volume , 7 percent by weight flat angular strongly coherent cemented 2-?-5 millimeter shale, unspecified fragments observed by weighed method; slightly acid, pH 6.4, pH meter. Lab sample # UCD03524
    A2—5 to 18 centimeters (2.0 to 7.1 inches); pale brown (10YR 6/3), brown (10YR 5/3), moist; sandy clay loam; weak coarse subangular blocky structure; soft, very friable, nonsticky; many fine roots; many medium and many fine pores; 1 percent by volume , 1 percent by weight flat angular strongly coherent cemented 5-?-13 millimeter shale, unspecified fragments observed by weighed method and 8 percent by volume , 13 percent by weight flat angular strongly coherent cemented 2-?-5 millimeter shale, unspecified fragments observed by weighed method; slightly acid, pH 6.5, pH meter. Lab sample # UCD03524
    Bw—18 to 23 centimeters (7.1 to 9.1 inches); extremely channery clay loam; around fragments; 8 percent by volume , 7 percent by weight flat angular strongly coherent cemented 13-?-51 millimeter shale, unspecified fragments observed by weighed method and 25 percent by volume , 31 percent by weight flat angular strongly coherent cemented 2-?-5 millimeter shale, unspecified fragments observed by weighed method and 33 percent by volume , 40 percent by weight flat angular strongly coherent cemented 5-?-13 millimeter shale, unspecified fragments observed by weighed method; neutral, pH 6.7, pH meter. Lab sample # UCD03525
    R—23 centimeters (9.1 inches); bedrock; in cracks; fragments.