IDENTIFIERS

  • Current Taxon Name (Soil Name): Ravenrock
  • OSD
  • Series Extent
  • User Site ID: S1984MD021005
  • User Pedon ID: S1984MD021005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 84P0723
  • NCSS Pedon Lab Data NASIS Record ID - 54966
  • Print Date: 11/12/2024

    • 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: 39.6248278
  • Std. Longitude: -77.4773278
  • Datum: WGS84
  • Location Description: Cunningham Falls State Park; off campground D 20; 25 degrees E of N; south of pit 4.
  • Map Unit: HkE—HIGHFIELD VERY STONY LOAM, 20 TO 45 PERCENT SLOPES
  • State: Maryland
  • County: MD021—Frederick
  • MLRA: 130A—Northern Blue Ridge

    • PEDON

  • Describers Name: Carl Robiette, Ron Yeck, Carolyn Olson & J. Oertly
  • Current Taxonomic Class: Loamy-skeletal, mixed, active, mesic Typic Hapludalfs
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Ravenrock
  • PSC - 33 to 83 cm.
  • Classificaton Date - 4/4/2017
  • Classifier - Ben Marshall
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Lew
  • Taxonomic Class - Loamy-skeletal, mixed Mollic Hapludalfs
  • PSC - 33 to 83 cm.
  • Classificaton Date - 8/1/1984
  • Classifier - Soil Survey Staff
  • Soil Taxonomic Edition - first edition
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: hillside or mountainside
  • Runoff: high
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/1/1984 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • 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

    argillic horizon

    lithologic discontinuity

    0—33

    33—150

    53—160

    —33—

    —117—

    —107—
    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

    33

    —

    —

    494

    —

    180

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 18 centimeters (0.0 to 7.1 inches); dark brown (10YR 3/3) interior very channery silt loam; moderate medium granular structure; very friable; 20 percent by volume 75-162-250 millimeter mixed fragments and 30 percent by volume 2-39-75 millimeter mixed fragments; abrupt wavy boundary. Lab sample # 84P4000; observed in trench. Coarse fragment wts.; 20 to 75 mm 8 lbs. and less 20 mm 30 lbs.
    BE—18 to 33 centimeters (7.1 to 13.0 inches); olive brown (2.5Y 4/4) interior very channery silt loam; moderate fine subangular blocky structure; friable; 5.5 medium and coarse roots; 20 percent by volume 75-162-250 millimeter mixed fragments and 30 percent by volume 2-39-75 millimeter mixed fragments; clear wavy boundary. Lab sample # 84P4001; observed in trench. Coarse fragment wts.; 20 to 75 mm 14 lbs. and less than 20 mm 41 lbs.; many medium and coarse roots
    Bt1—33 to 53 centimeters (13.0 to 20.9 inches); dark yellowish brown (10YR 4/6) interior very channery silt loam; moderate fine subangular blocky structure; friable; 2.5 medium roots; 2.5 very fine tubular pores; 15 percent faint , moist, clay films on faces of peds; 15 percent by volume 75-162-250 millimeter mixed fragments and 35 percent by volume 2-39-75 millimeter mixed fragments; clear wavy boundary. Lab sample # 84P4002; observed in trench. Coarse fragment wts.; 20 to 75 mm 12 bls. and less 20 mm 49 lbs.; few clay films surface features on faces of peds; common medium roots; patchy - phpvsfiid 1053121; patchy - phpvsfiid 1053121
    2Bt2—53 to 86 centimeters (20.9 to 33.9 inches); yellowish red (5YR 5/6) interior very channery silt loam; moderate fine angular blocky structure; friable; 2.5 medium roots; 2.5 fine tubular pores; 15 percent prominent , moist, clay films on faces of peds; 15 percent by volume 75-162-250 millimeter mixed fragments and 25 percent by volume 2-39-75 millimeter mixed fragments; gradual wavy boundary. Lab sample # 84P4003; observed in trench. Coarse fragment wts.; 20 to 75 mm 16 lbs. and less than 20 mm 38.5 lbs.; few clay films surface features on faces of peds; common medium roots; continuous - phpvsfiid 1053122; continuous - phpvsfiid 1053122
    2Bt3—86 to 150 centimeters (33.9 to 59.1 inches); yellowish red (5YR 5/6) exterior and red (2.5YR 4/6) interior extremely flaggy silt loam; weak fine angular blocky structure; firm; 0.5 fine and medium roots; 5.5 fine tubular pores; 37 percent distinct 2.5YR 2/0 (2.5YR 2/0), moist, manganese or iron-manganese stains and 55 percent faint , moist, clay films on faces of peds; 30 percent by volume 2-39-75 millimeter mixed fragments and 40 percent by volume 75-162-250 millimeter mixed fragments; gradual irregular boundary. Lab sample # 84P4004; observed in trench. Coarse fragment wts.; 20 to 75 mm 26 lbs. and less than 20 mm 47 lbs.; tossed a large number of 73 rock fragment.; many clay films surface features on faces of peds; common manganese or iron-manganese stains surface features; few fine and medium roots; discontinuous - phpvsfiid 1053123; discontinuous - phpvsfiid 1053123
    2BC—150 to 160 centimeters (59.1 to 63.0 inches); strong brown (7.5YR 4/6) interior extremely flaggy silt loam; weak coarse platy, and weak fine angular blocky structure; firm; 2.5 fine tubular pores; 2 percent faint , moist, clay films on faces of peds and 15 percent distinct 7.5YR 2/0 (7.5YR 2/0), moist, manganese or iron-manganese stains; 20 percent by volume 2-39-75 millimeter mixed fragments and 65 percent by volume 75-162-250 millimeter mixed fragments. Lab sample # 84P4005; observed in trench. Coarse fragment wts.; 20 to 75 mm 9 lbs. and less than 20 mm 13.5 lbs.; pit base; very few clay films surface features on faces of peds; few manganese or iron-manganese stains surface features; patchy - phpvsfiid 1053119; patchy - phpvsfiid 1053119