IDENTIFIERS

  • Current Taxon Name (Soil Name): Croom
  • OSD
  • Series Extent
  • User Site ID: S2004MD033036
  • User Pedon ID: S2004MD033036
  • Vegetation Plot ID: S2004MD033036
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 04N1048
  • NCSS Pedon Lab Data NASIS Record ID - 16907
  • Print Date: 12/11/2024

    • 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: 38.6803055
  • Std. Longitude: -76.9494705
  • Datum: WGS84
  • Location Description: On a 13 percent slope in a woodlot; face of a gravel pit; approximately 4.25 miles WSW from the intersection of MD route 5 and Accokeek road route 373, about 3000 feet WNW from the intersection of Gardner road and Route 373 Accokeek road, and about 1.75 miles SSE from the intersection of Floral Park Road and Danville Road. Updated 1/29/2007 Prince Georges County, Maryland; about 4.75 miles ENE of Accokeek and 4.25 miles WSW from the intersection of MD Route 5 and Route 373 (Accokeek Road), about 3000 feet WNW from the intersection of Garner Road and Route 373 and about 1.75 miles SSE from the intersection of Floral Park Road and Danville Road. USGS Piscataway topographic quadrangle; lat. 38 degrees 40 minutes 49.1 seconds north and long. 76 degrees 56 minutes 58.1 seconds west; NAD 83.
  • Map Unit: 933E—Croom-Marr complex, 15 to 25 percent slopesCxE—Croom-Marr-Urban land complex, 15 to 25 percent slopes
  • State: Maryland
  • County: MD033—Prince George's
  • MLRA: 149A—Northern Coastal Plain
  • Regional Office: SE—Southeast
  • MLRA Soil Survey Area: NE-HAM—Hammonton, New Jersey
  • Non-MLRA Soil Survey Area: MD033—Prince George's County, Maryland
  • 7.5 Minute USGS Quad: 38076-F8—Piscataway, Maryland

    • PEDON

  • Describers Name: David Verdone
  • Current Taxonomic Class: Loamy-skeletal, siliceous, semiactive, mesic Typic Hapludults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Croom
  • PSC - 23 to 73 cm.
  • Classificaton Date - 6/3/2009
  • Classifier - Susan Demas
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Croom
  • Classificaton Date - 1/29/2007
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Parent Material: gravelly fluviomarine deposits
  • Landscape: coastal plain
  • Landform: hillslope
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/15/2004 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CARYA

    GLTR

    LONIC

    PIVI2

    QUERC

    RUBUS

    THUJA

    TORA2

    Carya

    Gleditsia triacanthos

    Lonicera

    Pinus virginiana

    Quercus

    Rubus

    Thuja

    Toxicodendron radicans

    hybrid hickory

    honeylocust

    honeysuckle

    Virginia pine

    oak

    blackberry

    arborvitae

    eastern poison ivy

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

    ochric epipedon

    argillic horizon

    0—23

    23—137

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    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

    13

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    60

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    Ap1—0 to 3 centimeters (0.0 to 1.2 inches); very dark grayish brown (10YR 3/2) loam; moderate medium granular structure; very friable, moderately sticky, nonplastic; 4.0 very fine roots throughout and 4.0 fine roots throughout; 4 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8; clear smooth boundary. Lab sample # 04N05679
    Ap2—3 to 23 centimeters (1.2 to 9.1 inches); dark yellowish brown (10YR 4/4) loam; moderate coarse subangular blocky structure; very friable, moderately sticky, nonplastic; 0.8 very fine roots throughout and 0.8 fine roots throughout; 8 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8; abrupt smooth boundary. Lab sample # 04N05680
    Bt1—23 to 33 centimeters (9.1 to 13.0 inches); strong brown (7.5YR 4/6) very gravelly clay loam; strong coarse subangular blocky structure; friable, moderately sticky, nonplastic; 0.8 medium roots throughout; 5 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 38 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8; clear wavy boundary. Lab sample # 04N05681
    Bt2—33 to 76 centimeters (13.0 to 29.9 inches); strong brown (7.5YR 4/6) extremely gravelly sandy clay loam; weak fine subangular blocky structure; friable, moderately sticky, nonplastic; 0.8 medium roots throughout; 5 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 65 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8; gradual smooth boundary. Lab sample # 04N05682
    Bt3—76 to 137 centimeters (29.9 to 53.9 inches); dark yellowish brown (10YR 4/6) extremely gravelly sandy clay loam; weak very fine subangular blocky structure; friable, moderately sticky, nonplastic; 0.8 fine roots throughout; 5 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 72 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8; gradual smooth boundary. Lab sample # 04N05683
    BCt—137 to 168 centimeters (53.9 to 66.1 inches); strong brown (7.5YR 4/6) extremely gravelly sandy clay loam; structureless massive; friable, slightly sticky, nonplastic; 0.8 fine roots throughout; 2 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 78 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8; gradual smooth boundary. Lab sample # 04N05684
    BC—168 to 203 centimeters (66.1 to 79.9 inches); dark yellowish brown (10YR 4/6) extremely gravelly coarse sandy loam; structureless massive; friable, slightly sticky, nonplastic; 0.8 very fine roots throughout and 0.8 fine roots throughout; 5 percent prominent dark yellowish brown (10YR 4/4), moist, clay bridges on all faces of peds; 72 percent by volume nonflat rounded unspecified fragments; extremely acid, pH 3.8. Lab sample # 04N05685. continuous - phpvsfiid 349158; continuous - phpvsfiid 349158