IDENTIFIERS

  • Current Taxon Name (Soil Name): Ravenrock
  • OSD
  • Series Extent
  • User Site ID: S1984MD021003
  • User Pedon ID: S1984MD021003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 84P0721
  • NCSS Pedon Lab Data NASIS Record ID - 54964
  • Print Date: 11/24/2024

    • 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: 39.6256222
  • Std. Longitude: -77.4790778
  • Datum: WGS84
  • Location Description: Cunningham Falls State Park; E campground.
  • Map Unit: HkC—HIGHFIELD VERY STONY LOAM, 0 TO 20 PERCENT SLOPES
  • State: Maryland
  • County: MD021—Frederick
  • MLRA: 130A—Northern Blue Ridge

    • PEDON

  • Describers Name: David Yost, Carolyn Olson, Carl Robinette
  • Current Taxonomic Class: Loamy-skeletal, mixed, active, mesic Ultic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - Ravenrock
  • PSC - 20 to 70 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 Ultic Hapludalfs
  • PSC - 20 to 70 cm.
  • Classificaton Date - 8/1/1984
  • Classifier - Soil Survey Staff
  • Soil Taxonomic Edition - first edition
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: upland slope
  • 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 Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    bedrock, lithic

    weakly coherent

    strongly coherent

    210 - 248

    248 - 258

    - 38 -

    - 10 -

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

    ochric epipedon

    argillic horizon

    lithologic discontinuity

    paralithic contact

    paralithic materials

    lithic contact

    lithologic discontinuity

    0—20

    20—120

    61—248

    210—248

    210—248

    248—258

    248—258

    —20—

    —100—

    —187—

    —38—

    —38—

    —10—

    —10—
    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

    5

    —

    —

    519

    —

    225

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 6 centimeters (0.0 to 2.4 inches); very dark grayish brown (10YR 3/2) interior extremely cobbly silt loam; moderate medium granular structure; very friable; 5.5 fine roots; 25 percent by volume 2-39-75 millimeter mixed fragments and 30 percent by volume 75-162-250 millimeter mixed fragments; abrupt wavy boundary. Lab sample # 84P3984; observed in trench. many fine roots
    EB—6 to 20 centimeters (2.4 to 7.9 inches); brown (7.5YR 4/4) interior very gravelly loam; weak medium subangular blocky structure; friable; 5.5 fine and medium roots; 30 percent by volume 2-39-75 millimeter mixed fragments; clear wavy boundary. Lab sample # 84P3985; observed in trench. many fine and medium roots
    Bt1—20 to 40 centimeters (7.9 to 15.7 inches); strong brown (7.5YR 5/6) interior very gravelly loam; moderate medium subangular blocky structure; friable; 5.5 medium roots; faint , moist, clay films on faces of peds; 30 percent by volume 2-39-75 millimeter mixed fragments; abrupt irregular boundary. Lab sample # 84P3986; observed in trench. many medium roots; patchy - phpvsfiid 1053111; patchy - phpvsfiid 1053111
    Bt2—40 to 61 centimeters (15.7 to 24.0 inches); dark red (2.5YR 3/6) interior very gravelly loam; moderate medium angular blocky structure; friable; 5.5 fine and medium roots; faint , moist, clay films on faces of peds; 10 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 # 84P3987; observed in trench. many fine and medium roots; continuous - phpvsfiid 1053112; continuous - phpvsfiid 1053112
    2Bt3—61 to 92 centimeters (24.0 to 36.2 inches); red (2.5YR 4/6) interior very cobbly loam; weak coarse platy, and weak coarse angular blocky structure; friable; 0.5 fine and medium roots; faint , moist, clay films on faces of peds; 20 percent by volume 75-162-250 millimeter mixed fragments and 20 percent by volume 2-39-75 millimeter mixed fragments; gradual wavy boundary. Lab sample # 84P3988; observed in trench. few fine and medium roots; continuous - phpvsfiid 1053113; continuous - phpvsfiid 1053113
    2Bt4—92 to 120 centimeters (36.2 to 47.2 inches); red (2.5YR 4/6) interior silty clay; weak coarse angular blocky structure; friable; 0.5 fine and medium roots; faint , moist, clay films on faces of peds; 20 percent by volume 2-39-75 millimeter mixed fragments and 40 percent by volume 75-162-250 millimeter mixed fragments; clear irregular boundary. Lab sample # 84P3989; observed in trench. Tongues extend from 107 to 193 cm with a spacing of 8 to 23 inches.; few fine and medium roots; continuous - phpvsfiid 1053114; continuous - phpvsfiid 1053114
    2BC—120 to 148 centimeters (47.2 to 58.3 inches); red (2.5YR 4/6) interior and yellowish red (5YR 5/6) interior extremely cobbly loam; weak coarse subangular blocky structure; friable; 0.5 medium roots; faint , moist, clay films on faces of peds and , moist, manganese or iron-manganese stains on faces of peds; 25 percent by volume 2-39-75 millimeter mixed fragments and 50 percent by volume 75-162-250 millimeter mixed fragments; moderately acid, pH 5.8, hellige-truog; abrupt irregular boundary. Lab sample # 84P3990; observed in trench. Redder color is finer textured.; few medium roots; patchy - phpvsfiid 1053115; patchy - phpvsfiid 1053115
    2C—148 to 210 centimeters (58.3 to 82.7 inches); strong brown (7.5YR 5/6) interior and red (2.5YR 4/6) interior extremely cobbly sandy loam; weak coarse platy structure; firm; 0.5 fine roots; faint , moist, clay films on faces of peds and , moist, manganese or iron-manganese stains on faces of peds; 20 percent by volume 2-39-75 millimeter mixed fragments and 50 percent by volume 75-162-250 millimeter mixed fragments; clear irregular boundary. Lab sample # 84P3991; observed in trench. few fine roots; continuous - phpvsfiid 1053117; continuous - phpvsfiid 1053117
    2Cr—210 to 248 centimeters (82.7 to 97.6 inches); light olive brown (2.5Y 5/6) interior bedrock; massive; very firm; fragments; moderately acid, pH 5.8, hellige-truog; abrupt irregular boundary. Lab sample # 84P3992; observed in trench. Massive is actually highly fractured.; Fine sandy loam texture by lab analysis
    2R—248 to 258 centimeters (97.6 to 101.6 inches); bedrock; fragments.; observed in trench. Not sampled.