IDENTIFIERS

  • Current Taxon Name (Soil Name): Hyattstown
  • OSD
  • Series Extent
  • User Site ID: S1985MD031010
  • User Pedon ID: S1985MD031010
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 86P0383
  • NCSS Pedon Lab Data NASIS Record ID - 58188
  • 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: 39.2571444
  • Std. Longitude: -77.3521028
  • Datum: WGS84
  • Location Description: In a Cropped Field about 2,500 feet north on Old Hundred Road from its intersection with Comus Road, 2,300 feet west on a farm road and 500 feet north, in Montgomery County, Maryland.
  • Map Unit: 9B—Linganore-Hyattstown channery silt loams, 3 to 8 percent slopes
  • Country: US—United States
  • State: Maryland
  • County: MD031—Montgomery
  • MLRA: 148—Northern Piedmont
  • Regional Office: SE—Southeast
  • MLRA Soil Survey Area: NE-FRE—Frederick, Maryland
  • Non-MLRA Soil Survey Area: MD031—Montgomery County, Maryland
  • 7.5 Minute USGS Quad: 39077-C3—Urbana, Maryland

    • PEDON

  • Describers Name: James H. Brown, Steve T. Dyer
  • Current Taxonomic Class: Loamy-skeletal, mixed, subactive, mesic, shallow Typic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 10
  • Correlated Information:
  • Soil Name - Hyattstown (flagged as OSD)
  • PSC - 23 to 46 cm.
  • Classificaton Date - 7/10/2014
  • Classifier - David Verdone
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Hyattstown
  • Classificaton Date - 11/1/1985
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • QA Status: level 1


    • SITE

  • Parent Material: residuum weathered from phyllite
  • Landscape: piedmont
  • Landform: hill
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: shoulder
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: phyllite at 66cm
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/1/1985 (actual site observation date)
  • Data Collector: James H. Brown, Steve T. Dyer
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • 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

    moderately coherent

    indurated

    46 - 66

    66 - 91

    - 20 -

    - 25 -

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

    ochric epipedon

    argillic horizon

    paralithic contact

    paralithic materials

    lithic contact

    0—23

    23—46

    46—66

    46—66

    66—91

    —23—

    —23—

    —20—

    —20—

    —25—
    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

    2

    —

    —

    172

    —

    275

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 23 centimeters (0.0 to 9.1 inches); dark grayish brown (10YR 4/2) interior, light brownish gray (10YR 6/2) interior, dry; channery silt loam; moderate fine and medium subangular blocky structure; friable; 0.5 medium roots and 5.5 fine roots; fragments; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # 86P2271. 15% rock fragments.; many fine roots; few medium roots
    Bt1—23 to 36 centimeters (9.1 to 14.2 inches); yellowish brown (10YR 5/4) interior very channery silt loam; moderate fine and medium subangular blocky structure; friable; 0.5 medium roots and 5.5 fine roots; 2.5 fine tubular pores; faint , moist, clay films on faces of peds and in pores; fragments; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # 86P2272. 45% rock fragments. Micromorphology: In plain light, lath-like rock fragments dominate with intersticies filled with fines. Thick continuous argillans in voids and on faces of rock fragments. Almost all clay appears to be illuvial.; many fine roots; few medium roots
    Bt2—36 to 46 centimeters (14.2 to 18.1 inches); brown (7.5YR 5/4) interior extremely channery silt loam; weak medium subangular blocky structure; friable; 0.5 fine roots; 0.5 fine tubular pores; faint , moist, clay films on faces of peds; fragments; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # 86P2273. 65% rock fragments.; few fine roots
    Cr—46 to 66 centimeters (18.1 to 26.0 inches); brown (7.5YR 5/4) interior and brown (10YR 5/3) interior extremely channery silt loam; fragments; neutral, pH 7.0, hellige-truog; clear irregular boundary. Lab sample # 86P2274. Rock structure; firm in place; 80% rock fragments; gray (7.5YR 5/1) hopper phyllite bedrock. Micromorphology: Highly weathered bedrock with fine materials filling the intersticies. Clay appears to be both illuvial and authigenic.
    R—66 to 91 centimeters (26.0 to 35.8 inches); bedrock; fragments.