IDENTIFIERS

  • Current Taxon Name (Soil Name): Shellrock
  • OSD
  • Series Extent
  • User Site ID: 1974ID085001
  • User Pedon ID: 1974ID085001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - UIdaho
  • Lab Pedon # - 74ID4306
  • Print Date: 12/10/2025

    • 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: 44.3736860
  • Std. Longitude: -115.9756340
  • Datum: WGS84
  • Township: 12 N
  • Range: 04 E
  • Section: 15
  • PLSS Details: about 790 meters south and 300 meters east of the northwest corner
  • Location Description: about 0.5 km southeast of Herrick Reservoir dam.
  • Map Unit: 52—Shellrock-Rock outcrop complex, 30 to 60 percent slopes
  • State: Idaho
  • County: ID085—Valley
  • MLRA: 43B—Central Rocky Mountains
  • MLRA Soil Survey Area: NW-MOS—Moscow, Idaho
  • Non-MLRA Soil Survey Area: ID652—Valley Area, Idaho, Parts of Adams and Valley Counties
  • 7.5 Minute USGS Quad: 44115-C8—Sixmile Point, Idaho

    • PEDON

  • Describers Name: LM Rassmussen & GH Logan
  • Current Taxonomic Class: Coarse-loamy, mixed, frigid Typic Xerorthents
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Sampled As Information:
  • Soil Name - Shellrock
  • Taxonomic Class - Coarse-loamy, mixed, frigid Typic Xerorthents
  • Taxon Kind - taxadjunct
  • PSC - 25 to 100 cm.
  • Classificaton Date - 10/9/2018
  • Classifier - Scott Bare
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from granite
  • Landscape: mountains
  • Landform: hill
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: very strongly coherent slight weathered granite at 142cm
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/16/1974 (actual site observation date)
  • Data Collector: L.M. Rasmussen & G.H. Logan
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - conifers
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    lithic contact

    0—13

    142—152

    —-

    —-
    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

    35

    —

    —

    1535

    —

    215

    666

    —

    62

    5

    —

    —

    5.5

    —

    —

    —

    —

    —

    —

    —
    A11—0 to 5 centimeters (0.0 to 2.0 inches); very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dry; gravelly sandy loam; 6 percent clay; weak fine granular structure; soft, very friable; many roots; 15 percent by volume nonflat indurated 2-?-75 millimeter granite fragments observed by weighed method; clear smooth boundary. Lab sample # ID43061
    A12—5 to 13 centimeters (2.0 to 5.1 inches); brown (10YR 4/3), grayish brown (10YR 5/2), dry; gravelly sandy loam; 7 percent clay; weak fine granular, and weak medium granular structure; soft, very friable; many roots; 15 percent by volume nonflat indurated 2-?-75 millimeter granite fragments observed by weighed method; gradual smooth boundary. Lab sample # ID43062
    C1—13 to 30 centimeters (5.1 to 11.8 inches); dark grayish brown (10YR 4/2), grayish brown (10YR 5/2), dry; gravelly sandy loam; 7 percent clay; massive; soft, very friable; common roots; 15 percent by volume nonflat indurated 2-?-75 millimeter granite fragments observed by weighed method; gradual smooth boundary. Lab sample # ID43063
    C2—30 to 142 centimeters (11.8 to 55.9 inches); dark grayish brown (10YR 4/2), grayish brown (10YR 5/2), dry; gravelly sandy loam; 9 percent clay; slightly hard, very friable; few roots; 15 percent by volume nonflat indurated 2-?-75 millimeter granite fragments observed by weighed method; gradual smooth boundary. Lab sample # ID43064
    R—142 to 152 centimeters (55.9 to 59.8 inches); bedrock; 13 percent clay; massive; fragments. Lab sample # ID43065